Help with Gaskets and Gasketing specifications:
Type
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| Gasket Type: | |||
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| Cured-in-Place (CIP) | Cured-in-place (CIP) gaskets are applied in precision beads to one of the mating surfaces as a liquid. The liquid is then cured by ultraviolet (UV) light to form an elastomeric material that is adhered to the surface. Sealing occurs as the elastomer compresses during assembly of the mating parts. | ||
| Edge Trim | Edge trim is used to provide a decorative or protective surface to an edge or flange. | ||
| Formed-in-Place (FIP) | Formed-in-place (FIP) gaskets are applied to one mating surface as a liquid sealant before assembly. After the mating parts are assembled, the gasket spreads and cures between the two surfaces, filling all gaps and surface irregularities. | ||
| Gasket Strip | Gasket material in a strip configuration. Gasket strips are manufactured in many different cross sections. Common cross-sections are round (solid and hollow), square or rectangular, channel, C-fold, D-section, L-section, P-section, knife-edge, and wedge. | ||
| Sanitary Gasket | Sanitary gaskets are used in processing pipeline systems for the food, dairy, beverage, pharmaceutical, and biotech industries. Sanitary gaskets are available in many different configurations, including clamp, bevel seat, flanged, PTFE envelope, schedule 5, proprietary sanitary fittings (Cherry-Burrell I and Q line, John Perry, etc.), and others. | ||
| Sheet / Die-cut | Gasket material is a flat sheet that can be cut prior to assembly or is already die-cut. Gasket sheets are frequently rolled when purchase in long lengths. | ||
| Spiral Wound | Spiral wound gaskets are constructed with alternating layers of a soft filler material and a formed metal wire. They may include a centering ring, an inner ring, or both. The outer centering ring acts as a compression limiter and the inner ring adds radial strength. They are used for a variety of applications due to their resiliency and strength. | ||
| Spring Finger | Spring finger gaskets are usually made of beryllium copper or other EMI shielding material and are available in strips. They have spring finger wiping and low closure properties. Spring finger gaskets are available in a variety of cross sections. | ||
| Tadpole Gasket | Tadpole gaskets are shaped like a tadpole and are used where conformance to uneven flanges and surfaces is required. | ||
| Tape | The gasket is of flat or tape construction. | ||
| Trim Seal | Trim seals can be pushed on an existing edge or flange. | ||
| Waterstop | Waterstops are static seals used between joints in concrete structures to prevent the passage of water or other fluids. | ||
| Weatherstripping | Weatherstripping is used to seal openings in doors, windows, and other applications from water and other elements. | ||
| Window Gasket | Window gaskets are used to seal a glass or plastic window in a sheet metal opening. They are manufactured in a variety of shapes and styles, with most having an "H" cross-section. Window gaskets may be of one or two-piece construction. | ||
| Custom Gasket | For applications requiring supplier to fabricate a custom gasket. | ||
| Other | Other, unlisted, or proprietary gasket. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Material
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| Material: | |||
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| Aluminum | Aluminum is a silver-white, malleable, ductile, light, trivalent metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation. | ||
| Beryllium Copper |
Beryllium copper alloy physical properties vary depending upon chemical composition and processing. They achieve their properties through alloying elements, cold rolling, and a precipitation hardening heat treatment. Typical physical properties are:
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| Butyl | Butyl is a common term used for the isobutylene isoprene elastomer. It is known for its resistance to water, steam, alkalis, and oxygenated solvents. It has low gas permeation and is capable of providing high-energy absorption (dampening) and good hot tear strength. Suggested operating temperature (-75° to 250° F). | ||
| Copper | Copper is a common reddish metallic element that is ductile and malleable, and is one of the best conductors of heat and electricity. | ||
| Cork | The gasket is made from the elastic, tough, outer tissue of the cork oak. Cork swells when wet to further enhance sealing. | ||
| Ethylene Propylene (EPDM) | Ethylene propylene (EPDM) offers good resistance to sunlight, weathering, and ozone. It has poor resistance to petroleum oils and fuel, but offers good heat and compression set resistance. Suggested operating temperature ranges from (-70° to 275° F). Trade names include Nordel® (DuPont Dow Elastomers), Vistalon® (Exxon Mobil Chemical), Epsyn® (DSM Elastomers), Royalene® (Uniroyal Chemical), and Epcar® (B.F. Goodrich). | ||
| Fluoroelastomer (FKM - Viton®, Fluorel®, etc.) | Fluroelastomers are a range of tailorable fluoropolymer elastomers. They are normally black and have high heat, oil, and chemical resistance but indifferent low temperature performance. With the exception of Kalrez® (DuPont Dow Elastomers) perfluorinated elastomer, they are about the most highly temperature resistant of all commercially available elastomers. Trade names include Viton® (DuPont Dow Elastomers), Fluorel® and Aflas™ (3M Corporation), and Technoflon® (Montedison). | ||
| Foam | These gaskets are manufactured from a foam-based material. They are sometimes bonded to a fabric or other material. | ||
| Graphite | Graphite will not leach out or harden and, therefore, last indefinitely in virtually any fluid sealing application. It is also free from corrosion, flow, embrittlement, and aging. This makes graphite gaskets desirable for even extreme conditions. Graphite can withstand temperatures from -200ºC to 1650ºC (as high as 3000ºC in the absence of oxygen). Graphite is resistant to concentrated acids, solvents, and hot oils; is not susceptible to hot or cold flow; and is unaffected by radiation. | ||
| Neoprene | Neoprene is a synthetic rubber that resists degradation from sun, ozone, and weather. It performs well in contact with oils and many chemicals. Neoprene remains useful over a wide temperature range, displays outstanding physical toughness, and resists burning inherently better than exclusively hydrocarbon rubbers. Neoprene also offers resistance to damage caused by flexing and twisting. Suggested operating temperature (-45° to 230° F). Neoprene was originally engineered by DuPont Dow. | ||
| Nitrile (NBR - Buna-N) | Nitrile is widely used with most oils, hydraulic fluids, and alcohol due to maintaining good resistance to petroleum hydrocarbons and fuels. Many compound variations are available for specific applications. Suggested operating temperature ranges from (-30° to 275° F). Trade names include Breon® (BP Chemicals), Chemigum® (Goodyear), Hycar® (B F Goodrich), Krynac® (Polysar Ltd.), Nipol® (Zeon Chemicals), Nysyn® NBR, (DSM Elastomers), Paracril® (Uniroyal Chemical), and Perbunan® (Mobay). | ||
| Nylon / Polyamide | Nylon comprises several grades of polyamides, and is a general purpose material in wide use; it is tough, resistant, and has good pressure ratings. | ||
| Paper | Paper is normally manufactured from vegetable fibers that are laid down on a fine screen from a water suspension. The fibers are "rough" and "cling" to one another. Almost any fibrous material can be used to make paper. | ||
| Polyethylene (PE) | Polyethylene is a semi-crystalline (typically around 50%), whitish, semi-opaque thermoplastic. It is soft, flexible, and tough even at low temperatures, and provides outstanding electrical properties but poor temperature resistance. It also has very good chemical resistance, but is prone to environmental stress cracking. It has poor UV resistance (unless modified) and poor barrier properties, except to water. | ||
| Polytetrafluoroethylene (PTFE, Teflon®, etc.) | Polytetrafluoroethylene (PTFE) is an insoluble compound that exhibits a high degree of chemical resistance and a low coefficient of friction. It is sometimes marketed in proprietary classes of materials such as Teflon®, a registered trademark of DuPont Dow Elastomers. | ||
| Polyurethane / Urethane | Polyurethane is a diverse class of materials exhibiting good elongation, recovery and toughness properties. They are flexible and have good abrasion resistance. (NOTE: The urethanes of the plastics industry are so named because the repeating units of their structures resemble the chemical urethane.) Trade names include Texin® (Bayer), Adiprene® and Vibrathane® (Uniroyal Chemical), Estane® (B F Goodrich), Genthane® (General Tire and Rubber), Millathane®, and Pellethane® (Dow Chemical). | ||
| Polyvinyl Chloride (PVC) | Polyvinyl chloride (PVC) is a widely used material that has good flexibility, smooth surface, and nontoxic qualities. Some grades are used in food and chemical processes due to the inert nature of PVC. Brand names include: ACP® and Dural® (Alpha Gary), Geon® (Geon), Benvic® (Solvay), Flexalloy® (Teknor Apex). | ||
| Room Temperature Vulcanizing (RTV) Silicone |
Room Temperature Vulcanizing (RTV) silicone is constructed of reactive oil base polymers combined with strengthening mineral fillers. There are two types of RTV:
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| Silicone Rubber | Silicones are polymers in which organics groups, such as methyl and phenyl groups, are bonded to the silicone atoms in chains of inorganic siloxanes (-Si-O-Si-). Their properties include heat, cold, and weather resistance; electrical insulation, release, water repellency, and defoaming. | ||
| Steel | Steel is a commercial iron that contains carbon in any amount up to about 1.7 percent as an essential alloying constituent. It is malleable when under suitable conditions, and is distinguished from cast iron by its malleability and lower carbon content. | ||
| Thermoplastic Elastomer (TPE) / Thermoplastic Vulcanizer (TPV) | Thermoplastic elastomers (TPEs) are materials that are blended from rubber and plastic. TPEs exhibit rubber-like properties but can be processed using conventional molding or extrusion equipment designed for thermoplastics. Thermoplastic vulcanizers (TPVs) are a type of thermoplastic elastomers. TPVs contain a fully-cured rubber phase (usually EPDM) in a matrix of thermoplastic (usually polypropylene). | ||
| Other | Unlisted, specialized, or proprietary material. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Width | Width of the gasket. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Thickness | Thickness of the gasket. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Features
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| Your choices are... | |||
| Adhesive Backed | The gasket has a pre-applied pressure sensitive adhesive (PSA). | ||
| Color Options | The gasket is available in colors other than black. | ||
| EMI / RFI Shielding | The gasket provides shielding against electromagnetic and radio frequency interference. | ||
| Non-asbestos | Non-asbestos materials are comprised of a wide variety of compounds that do not contain asbestos, such as compressed carbon, synthetic, or Aramid fibers bonded with nitrile (NBR) rubber. They are suitable for a wide variety of industrial sealing applications. | ||
| Other | |||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Performance
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| Maximum Operating Pressure: | This is the maximum pressure that the seal is rated for without failure. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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| Operating Temperature: | This is the full required range of ambient operating temperature. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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