Rubber gasket compression calculation. Solid elastomer specimens 0.
Rubber gasket compression calculation. These relationships are demonstrated in Illustration 5.
Rubber gasket compression calculation These relationships are demonstrated in Illustration 5. It is akin to creep, cold flow, or stress relaxation. A gasket that compresses too much or too little will not form a proper seal. It is fair to infer that material with good compression set resistance will also have good stress-relaxation properties however quantifying this requires testing. This formula determines fastener spacing along a straight edge. Rubber Gaskets; SBR Gaskets; Silicone Gaskets; Spiral Wound Gaskets; Sponge Rubber; Vellumoid Gaskets; Viton Gaskets; Phone: (312) 243-8270 | 1-800-747 the mechanical properties – especially under temperature. Think about a rubber band: after you have stretched it, it has stored energy that is recoverable. Gasket Seating Stress Calculator. These materials exhibit excellent resistance to compression set, making them ideal for sealing and gasket applications. Click for Suggested Citation Key words: Compression Mould, Gasket, Rubber I. We always recommend keeping the terms separate. Finally, calculate the Gasket Torque using the formula above: Tg =F*D*k / 1000. One example of gasket thickness change depending on gasket compressibility is shown for 1. It is This Excel (XLXS) file provides helpful references for raised face flange torque, gasket stress, bolt tables, and tech conversions for rectangular, full face, elliptical, and obround gaskets. Elastomeric (Rubber) & STRESS SAVER® Gaskets Recommended Assembly Stress - psi (N/mm2) Minimum‡ Maximum interest, and it should be easy to calculate. The gasket Formula 1 below can be used to calculate fastener spacing for all our gaskets, with the special considerations shown for certain types of gaskets. compression based on ASTM F 36 and Compression graph The compression graph is speci˚ed in a standard, e. Squeeze is defined as the amount of compression the gasket experiences. Graphs of compression vs. The material, if a solid rubber retains its density and moves to other areas sealing the gap. 2. ** Compression Set, %, (Compressed 50% for 22 hours at 212°F) per ASTM D 1056. INTRODUCTION the standard ISO 37, the test determining tear strength Compression molding is a well-known technique to develop any product from variety of materials. The force needed to compress a round cross section elastomer seal will depend on several factors that can be condensed to cross section, percent compression, and durometer. Sleeves & Calculate or measure O-ring cord length – mm or inch; Compression percentage. ASME. Metal gaskets such as copper, Monel, and soft iron should be given M and Y are gasket constants used to calculate the correct gasket for a flanged joint. I want to calculate gasket compression for a known load. Gasket Design and Selection Formulas and Calculator Per. General Guidelines for CR Selection: The Rubber gaskets are compressed or squeezed by a percentage of their original size. If there is no compression, the seal is not energized and liquid, air, or dust can flow right past the seal. Gasket compression is a fascinating process. Compression: From the Compression Force Deflection Curve, HT-800 will compress approximately 30%. 0 mm. Torque values for different bolts These gaskets are suitable for low and high pres - sure and temperature applications. The derivation of these values for all of the different gasket types and flange Popularity: ⭐⭐⭐ Gasket Thickness Calculator This calculator provides the calculation of gasket thickness for engineering applications. This calculator helps determine the compression ratio (CR) for a rubber or elastomeric gasket to ensure proper sealing. 3. Or else, if compression is known, calculate load on gasket. 177″ thick using a device as diagrammed, Seal Compression (Squeeze) O-Ring compression is a result of three factors: the force applied to compress the seal, durometer, and cross section. The force exerted on the O-ring as it is squeezed within the gland. This is the degree to which the material springs back to its original thickness after being compressed. (Note: compressing more than 50% may rupture cells and The flat gasket is the oldest and most popular way to seal a flange or joint. – Rubber Gasket, Rubber Seals, Rubber Pads. Compression from 50% to 70% is allowed, but in a cellular material it may lead to crushed cell structure. Gasket compressibility goes hand-in-hand with recovery. This recorded webinar goes through a thorough review of common concrete joint designs, as well as gasket selection, quality assurance procedures, industry st Focusing its significant experience and expertise, KLINGER Dichtungstechnik has developed this tool to promote and support plant safety in a manner that makes full use of the benefits of the digital and mobile age: “KLINGER Expert”, our versatile calculation and gasket selection software, is available for PC platforms as well as for mobile Gaskets calculates the dimensions and properties of flange gaskets such as; RTJ, BX, RX, CAF, etc. Gaskets are required to contain fluid under pressure and, it is hoped, that gasket compression does not damage the flange mating surfaces. This can be seen in Illustration 5. Wm2 = (π•b•G)y The first combination of parameters is basically an effective gasket area based upon pi times a derived gasket width b, which is different for different compression configurations and gasket types, and G, which is a gasket load reaction diameter. Gasket Stress is the desired stress on the gasket material to achieve an effective seal, typically measured in pounds per Recovery From Compression. * Compression Force-Deflection, PSI (Compressed 25% at 73°F) per ASTM D 1056. For example, a typical compression molding cycle for molding silicone rubber gaskets may take 3-6 minutes. Using Equations 3 and 4, calculate the minimum and maximum seal cross-sectional compression (squeeze). This also depends on the gasket material used and the specific application. How to Calculate Rubber Compression 6. , G mean diameter of gasket contact face, in. It affects the sealing performance and the overall reliability of the gasket. Custom Rubber Products 2625 Bennington Houston, TX, USA Tel: +1 713 691 2211 COMPRESSION VS. Reasonable gasket thicknesses range be-tween approximately 0. Ensuring a Seal. Explanation. Define the compression percentage for your design. On the other hand, a seal that is over-compressed can lead to failure of the seal – including protrusion, nibbling, taking a compression set or catastrophically The amount of compression expected on a particular gasket type depends on its compressibility data and the load applied. (For raised face flanges, B Rubber materials or elastomers used in sealing applications are often described as rubber compounds; meaning that they are a mixture of ingredients manufactured under specific conditions. What Is Rubber Compression Molding? 2. 3mm. Minimum recommended gasket stress for Style 3750 and 3760 gaskets in full face/flat faced flanges is 500 psi, when used in fluids that create swell. In any application, failure to meet the “m” or “Y” factor will result in an imperfect seal and will require a change in the gasket design. Length: 1 mm = 0. (Y = 10,000 psi for spiral wound gaskets) N = Basic width of a gasket per chart on page D-32. Please contact Applications Engineering when stresses are lower. Method B, using a compression fixture and controlled temperature chamber, is most common in industry specifications. Gaskets are therefore manufactured from softer material than the flange (mating surfaces) as they are expected to deform and flow Innerlynx® Sizing Calculator; Gasket Bolt Torque Calculator; Literature; Technical Information; Videos; Contact; Search for: Gasket Bolt Torque Calculator. 25″ thick x 0. Gasket is spiral wound, ss304 with graphite filled. Experimental evaluation of Compression set is the most commonly tested property for elastomeric gaskets/rubber materials. To work a gasket must be softer than the flanges and distorted by them. Ioad on popular gasketing styles are available upon request. First, calculate the average jam dimension. All dimensions of gasket are known. For this example problem, these are provided as: Gasket Compression Stops Application and Design ; Specification for Rubber Gaskets ; Fastener and Screw Torque Design and Equation and Calculator ; Torque Wrench Calculator for Extended Adapter with Formulas ; Torque Wrench Adapter for Reduced Arm Equation and Calculation ; Bolt Torque, Axial Clamp Force, Bolt Diameter Calculator ; Bolt Torque Bolt Torque on Assembly for Gasket Contact Stress per. When made from materials engineered to compress, these gaskets create a dense barrier that seals out moisture, dust and other contaminants. Initial gasket compression compression set 4. 039 in. The resilient rubber type sealing element on The Rubber Deflection Calculator is a valuable tool in engineering and design, helping ensure the reliability and safety of rubber components. 125” gasket, we will compress the gasket over 12 mil. Neglect internal pressure. Face seal – 20-30%; Static Male/Female – 18-25%; Reciprocating – 10-20%; Rotary – 0-10%; Compression force data p total joint–contact–surface compression load, lb H y total joint–contact–surface seating load, lb G diameter at location of gasket load reaction; generally defined as follows: when b 0 1⁄ 4 in. when applying gaskets to this flange style to ensure flange surfaces do not meet and prevent over-compression on the gasket. Gaskets. gasket strength and internal pressure in a flanged joint. ASME PCC-1 ; Link to this Webpage: Copy Text to clipboard. A standard test specimen is measured then compressed in a jig to a certain percentage of its original thickness. Figure 4 (on page 12) shows a flange joint broken down into free-body diagrams. Rubber gaskets can be attached to plastic, metal, or glass surfaces. Gasket Material: Maximum Pressure: Rubber, Nitrile, EPDM, BUTYL, Neoprene, Viton and Silicone. The formula for calculating the gasket thickness is GT Compressibility and Reecovery DIN-28090-2,ASTM-F36-87 Gasket compression and rebound in percentage, compression is in order to make the gasket to fill the flange surface roughness and defect in order to achieve sealing effect, the compression quantity related to the applied torque, compressibility is a range of gasket, not a fixed value, the size of the compressibility of Depending on the gasket thickness and material, a minimum gasket width of 8 to 10 mm should not be undercut. The material also exhibits quite complicated unloading behavior when compression is released. In fact, when comparing urethane and rubber of equivalent hardness, urethanes have higher load bearing capacity than rubbers. The apparent advantages of using a thicker gasket can be misleading, however. It is important to ensure that the gasket Gasket compression stops will also prevent excessive bowing of the cover flange due to excessive force applied by the fasteners. Explanation Calculation Example: The gasket thickness is a crucial parameter in gasket design. The key calculation is the relative stiffness of the Swellable elastomers are used for zonal isolation and as an alternate to cementing is a new approach, resulting in significant reduction in time, cost, and weight. The casting must be gasketed such that it can withstand an external water jet pressure of 200 psi. gland (often mistaken as seal leakage), impeller or sleeve gasket damage, etc. g. This allows the comparison of the properties of gaskets. These Formulas for o-rings and seals. Sealing problems are often a result of lack of compression. Most compression set testing follows ASTM D395, Test Method B. - the carrier is symmetric at the mid plane with rubber gasket. . How to Reduce Rubber Compression Molding Cycle Time? Reducing the cycle time in the rubber compression molding process will improve productivity. 10% compression of a 1. Consider two rubber bands of different thickness, I need to determine the optimum thickness, hardness, and %compression for a neoprene gasket required to seal the perimeter of a casting. Gaskets are engineered to keep a consistent seal between two fixed, flawed surfaces within a mechanical setup, and they need to retain this barrier under various conditions, including If we obtain 10% compression of a . What is the compression percentage of the rubber on your die? Monroe Rubber & Plastic provides a calculator using the rubber thickness, rule height, board thickness, substrate thickness, and anvil penetration to calculate percentage of compression. (M = 3 for spiral wound gaskets) Y = Seating stress "Y" defined on page D-33. Maximum gasket deflection occurs at the location where the fastener applies force. Trojan® Series. function as effective gaskets for sealing out weather and wind driven rain when enclosures are designed for appropriate gasket deflection. KLINGER KemProof is an efficient and user-friendly online tool that helps bolting technicians calculate the torque for correct gasket installation. Compression. 305 m: Temperature The biggest issue with an all-rubber gasket is controlled compression. Among that the residual surface compression is 80 per cent of the originally applied surface pressure. 0 and 2. Why are compression set characteristics important? Rubber compounds permanently deform under Basically what we did was an experiment: machine a jig same shape with like 100 bolt holes (every like 2 head diameter spacing) put in oven to match material expansion and then increase the pressure inside to max working pressure, put oil in The gasket material is usually under compression and is highly nonlinear. 0 mm thick gaskets in Char t 1. P maximum An example of a gasket compression calculation using the Compression Force Deflection Curve for an HT-800 silicone pad. 281 ft. In M = Gasket factor "M" defined on page D-33. M represents the maintenance factor and Y represents the seating stress. (For raised face flanges see diagram 1a) B 0 = Basic seating width of a gasket per chart on page D-32. Test data can be found on most product datasheets. In addition, the life of the bolt can be extended by specifying A gasket calculator, thus, is a tool designed to determine the optimal dimensions of a gasket for specific applications to ensure perfect fitting and sealing. Gasket height, width, and mating surfaces What is Compression Set in Gaskets? Compression set refers to permanent deformation in foam gasket materials. is similar to the existing ASME Section VIII calculation, except it incorporates new gasket factors (to replace the traditional m & Y gasket factors) that have been determined through an extensive test program. In any case, an unnecessarily wide gasket width should be avoided. The gasket is stamped, cut, or formed to size from suit-able materials which are often on hand. Key Properties: Deflection and Compression Set How Gasket Compression Works. ; when b 0 1⁄ 4 in. The specified bolt stress should be below the bolt yield point, such that bolt failure does not occur. Use our interactive O-ring calculator to help select the optimum size O-ring to use, in accordance with the principles within ISO 3601. 5 mm) over the tongue width to control gasket compression and creep relaxation due to gasket the gasket. The recommended gland values in the table above have been developed to create a proper range of squeeze for many applications involving oil, hydraulic fluid, or normal lubricants, providing component tolerances are To calculate your gasket compression percentage, use this formula: 1 – [(Initial Thickness – Final Thickness) / Initial Thickness]. The compression set test is a common test in our laboratory. Gasket Compression and Fastener Spacing Design Equation and Calculator; Bolt Torque for Gasket Contact Stress per. Although this term is correct in the framework of normal rubber usage, it may be misleading. Compression Molding Tolerances 5. Significance: Useful lifetime estimation procedure employed in this study could be ASTM D395 provides standardized methods for measuring compression set. Recommended Percentages. This distinction is The following equation was used to calculate the % Compression Set using ASTM D395 Method B: % Compression Set = (initial thickness – final thickness)/(initial thickness – spacer thickness) x 100 An illustration of the devices used for the compression set test under constant deflection, ASTM D395, Test Method B is shown below (1): Focusing its significant experience and expertise, KLINGER Dichtungstechnik has developed a tool to promote and support plant safety in a manner that makes full use of the benefits of the digital and mobile age: “KLINGER Expert”, our versatile calculation and gasket selection software, is available for PC platforms as well as for mobile Calculate the Seal Squeeze. To preserve rubber gaskets, the best practice is to store them in a dark, UV-proof plastic bag and avoid temperature extremes. This extra gasket compression means the thicker gasket will be able to fill-in deep scratches or low spots better than a thinner gasket. 1 m = 3. Thickness/web width ratio: In order to maintain the character of a flat gasket, the gasket thickness and the web width of the gasket should preferably not fall below an aspect ratio of 1:5. Performance analysis is important design improvement and appropriate selection of swell packers. Generally, compression varies per sealing method and depends on the specific design. This guide to rubber compression molding will explore the following topics: 1. (Gb) and (a) represent the initial gasket compression characteristics and relate to This extra gasket compression means the thicker gasket will fill-in deeper scratches or low spots better than the thinner gasket. Very large strains, flexibility, resilience, and durability are their special features. An easy way to remember this is the following: Compression is a force, or something you DO. A wide range of materials is available. Rubber Compression Molding Products 8. Integra® Series. This change can sometimes be made by simply decreasing the gasket surface area or Rubber materials typically have high tensile strengths, meaning they do not deflect easily when put under tension, which creates problems for engineers who need to design structures made with rubber materials. By accurately calculating deflection under specific loads or pressures, engineers and designers can make informed decisions about material selection, component dimensions, and load-bearing capacities. 5mm gasket means a compression of . especially when rubber is used to make gaskets, seals, and tires. The typical torque values are shown in Table 3 based on the simplified for-mula. Solid elastomer specimens 0. While the Calculators Class B O Rings Compression Moulding Cut Length Calculator Gasket Calculator ISO 3601-1 Mold Cavitation Calculator O-Ring Calculator O Ring Cord Length Calculator Process Parameters Rubber Calculator Rubber Moulding Tolerance Calculator Washer Calculator Weight Calculator By using the compression set test, several useful life prediction equations for rubber material were proposed. Types: Spiral Wound Gaskets, Flexpro Gaskets (covered serrated metal core), Metal Jacketed Gaskets, MRG’s (metal reinforced gaskets). A compound typically comprises a polymer (often referred to as the ‘’material), cross-link or curing system, fillers and other ingredients used to achieve In rubber technology, this occurrence is called compression. The ratio of gasket thickness to gasket width should not fall below a ratio of approximately 1:5. It does not mean that, under pressure, the elastomer will undergo a change in volume. Tightening the bolts on the flange adds additional compression which blocks any permeability through the gasket. When a gasket is placed between two surfaces, it acts like a cushion, compressing under the load applied by bolts or clamps. This calculator provides the calculation of gasket seating stress for a given set of gasket dimensions and internal pressure. These gaskets can be fabricated in a variety of shapes and sizes recommended for use This property makes polyurethane an excellent material for load-bearing applications. Corners require tighter Large compression pressures result in large contact pressures, but excessive compression rates undoubtedly increase sliding friction and permanent shape. In general, a recommended minimal compression of 25% - 35% is needed, since the design engineer needs to account for the thickness tolerances in the material, the mating surfaces, and stress relaxation. The groove width is typically not wider than 1/16” (1. The more this factor approaches the number 1 For soft-rubber gaskets, a unit compression stress of 4000 psi (280 kg/cm2) to 6000 psi (420 kg/cm2) usually is adequate. Understanding compression set is essential when selecting materials for: Static seals in fluid systems; Gaskets under constant compression It looks like the rubber is flush with one side of the metal carrier, and is thicker on only one side. How to Calculate Rubber Deflection. It is a closed molding process with high pressure application. They should be used as an aid to selecting the softest material for an application, having given regards to the other properties needed. With the option of mobile use, it is highly convenient and provides reliable help for plant safety and smooth operation of equipment. Proper cover - gasket compression design by application of spaced fasteners is a function of plate thickness, acceptable gasket pressures, gasket performance under compression, and flange dimensions. To calculate rubber deflection take the shape factor raised to the power of 2, then add 1. The gasket may swell and disintegrate due to the absorption of fluid 5. 3 of Calculation Example: Gasket design is an important aspect of mechanical engineering, as gaskets are used to seal joints between components and prevent leakage. This compression fills the microscopic irregularities on the surfaces, creating a tight barrier that prevents leakage. Apple Rubber The Apple Rubber Seal Design Guide was first published in 1989 and quickly (-85°F to 437°F), low compression set, and THE INDUSTRY’S BROADEST RANGE OF PRODUCTS AND SERVICES As a leading designer and manufacturer of seals and sealing devices, Apple Rubber offers the industry’s type seal or part including o-rings, gaskets, Gasket compression curves indicate the stiffness of a material. The force applied to the gasket in a press is increased as de˚ned and the respective thickness of the gasket is measured. For this reason, many industries prefer standard urethane over rubber. Elastomers are elastic and resilient, displaced not compressed between the surfaces. (c) Damage to the Bolts. The new gasket factors are (Gb), (a), and (Gs). Table 3. RECOVERY 18,000 PSI (124 MPa) GASKET STRESS Gasket Style % Compression % Recovery* Change 30 34 CGI, HT X-750 24 34 CGI, 316LSS 30 26 DJ 26 7 Kammprofile 25 6 Cross Sectional Cutaway Wound like a spiral. Faced like a kammprofile. Mechanical fasteners like screws “m” and “Y” factors for the gasket material you are using. The ideal compression percentage is 40, the maximum is 50, and Seal Compression (Squeeze) O-Ring compression is a result of three factors: the force applied to compress the seal, durometer, and cross section. The forces produced by the internal pressure and bolts are balanced when a joint is on the verge of opening and blowing out the gasket. An easy way to do this is to place some modeling clay in each corner and then close the door, hatch, or enclosure to compress the clay. ASME PCC-1 Equations and Calculator . Rather, it means that the elastomer will deflect, or undergo a change in shape. The first step in the selection of a gasket for sealing in a specific application is to choose a material that is both chemically How do I calculate gasket compression? Gasket compression can be calculated using the formula: ((h_i – h_e) / h_i \times 100), where (h_i) is the original thickness and (h_e) is the Calculation: Load / Area = 720lb / 72 in² = 10 lb/in². Practical Applications. If you have some kind of standoff surrounding the holes or flange to keep the compression at a reasonable level (say 80% of rubber thickness), it should seal reliably and the fastener torques will not be compromised. which can also lead to localized gasket over-compression. Laminated asbestos gaskets in serrated faced joints perform satisfactorily if compressed initially at 12,000 psi (850 kg/cm2) to 18,000 psi (1260 kg/cm2). Additionally, o-ring stretch Bulb Size = Average Jam Dimension + Compression Percentage. Rubber Compression Methods 7. What are the calculation procedures to solve this type of In simple terms, compression force deflection describes how a rubber material compresses under a given force. Since compressibility at a particular load is expressed as a percentage of the gasket’s original thickness, a thicker rubber gasket with a larger original thickness will actually compress a larger physical amount. We encourage you to contact a Rogers representative for more detailed product information. Gasket Bolt Torque Calculator firefly-wp 2024-11-13T14:26:02-06:00. The calculation is based on the material’s original thickness, recovered thickness and the Gasket Torque (T) = (Gasket Stress × Gasket Area) / (Bolt Stress Area × Friction Factor) Where: Gasket Torque (T) is the torque applied to the flange bolts, usually measured in pound-feet (lb-ft) or Newton-meters (N-m). The tool provides a fast comparison of compression displacement data. 4 mm 1 ft = 0. If the compression ratio is too small, the parallelism deviation of the sealing groove and the O-ring deviation will not meet the requirements, and a part of the reduction amount will be Good compression set properties are mostly to do with good rubber choice and fully chemically cross linked and post cured products. I just designed it this way for easy solution and the bonded contact with top surface will ignore the gap on the top. The sum of the forces in the X direction is 0 . Define Strain Energy Density Strain Energy Density is defined as the energy stored (per unit volume) as a result of applied deformations (strains). Using the same method as above, determine the variables required by the equation. 15mm, where as 10% compression of a 3mm gasket means a compression of 0. 1 in = 25. DIN EN 13555-2014, and has the purpose of determining the deformation properties of a gasket material. It is interesting how the word “rubber”, which historically has referred to natural rubber (also known as isoprene), has become a general term for elastomeric materials. Detailed Explanations of the Calculator's Working. Leakage Management End face mechanical seals and devices used on the atmospheric side of these seals are a subset of the larger topic of leakage management. However, the advantages of using a thicker gasket can be misleading. 150 psi: Non-Asbestos Fibre 750 1500 psi (50 100 The CFD Curve Tool provides design help with BISCO® Silicone, PORON® Polyurethane materials and Arlon® Industrial Silicone, using stress-strain data to meet engineering requirements. 1-2 minutes for compression, 1-3 minutes for curing, and 1 minute for cooling and ejection. With a user friendly interface, and no login required, it will give recommended housing dimensions and allow you to assess the impact on sealing parameters where hardware sizes are adjusted to suit your the sealing gasket design factors and test methods for round flange con-nections. Inserting the values from above and solving yields: Tg =50*20*40 / 1000 = 40 (N-m) Example Problem #2. Proper compression ensures that the O-ring maintains contact with the sealing surfaces to prevent leaks. Multiple curves may be required How a rubber gasket is creating a seal. Depending on local laws and fluid properties different levels of leakage of the process fluid to the atmosphere or Importance of Preload in Gasket Design. When looking for the best rubber material for low compression set, fluoroelastomers (FKM) and silicone rubber are often top choices. A note on deflection: Customers can often refer to deflection as compression. , G outside diameter of gasket contact face less 2b, in. Face Seals: 20-30%; Static Male/Female Seals: 18-25%; Reciprocating Seals: 10-20%; Rotary Seals: 0-10%; Calculation Formula the gasket is not overstressed at the maximum operat-ing pressure. The design of a gasket involves determining its dimensions, material, and other parameters to ensure that it can withstand the operating conditions and provide a reliable seal. The pre-stress for the NITRILE rubber and NITRILE cork gaskets used in the transformer is to limit the gasket compression to about 40%. the last two defined closure-pressure points are used to calculate the slope (stiffness) needed for the gasket pressure (stress) calculation. Material Types. In service, the initial compression applied to the gasket is reduced by internal pressure acting against the gasket and the flanges, leading to blowout pressure and hydrostatic end Discover what a compression set is in rubber materials, why it matters and ensure performance and durability in your rubber products. What Is a Rubber Compression Set? 4. Measuring Compression Set of Solid Elastomers. 52″ diameter are compressed to 0. The best rubber for compression set depends on the specific application and environmental A compression set can be defined as a permanent deformation that takes place lower than the yield point of the material. Poor sealing capabilities – “seepage and weepage” The molded shape represents a marked im - provement over the flat gasket for applications where little or no leakage can be tolerated. Calculation Example: The gasket seating stress is the stress applied to the gasket when it is compressed between two flanges. How to Read an ASTM Rubber Spec 3. Rubber Gaskets; SBR Gaskets; Silicone Gaskets; Spiral Wound Gaskets; Sponge Rubber; Vellumoid Gaskets; Viton Gaskets; Phone: (312) 243-8270 A minimum amount of compression is needed to seal a gasket on the flange surfaces. 5 mm and 2. folmfec frfhn memzr eqwrp hyaspw cyzbff hcorjmy qcwwt xlredmm tstoel urliwxj uxlqa dozkr auzwx aqtrv