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O-ring Materials:
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The descriptions of the materials and their characteristics to follow are typical. Exact specifications should be clarified by the vendor, as chemical and physical properties of an O-ring can differ based on manufacturing technique.
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Your choices are...
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AFLASTM (-10° to 300° F)
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Highly fluorinated, carbon backboned polymers used in applications to resist harsh chemical and ozone attack with a good thermal stability. AFLASTM offers low compression set and excellent aging characteristics.
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Butyl (-75° to 250° F)
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Butyl is a common term used for the isobutylene isoprene elastomer. It is known for its excellent 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.
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Cast Polyurethane (-40° to 125° F)
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Polyurethane elastomers, as a class, have excellent wear resistance, high tensile strength and high elasticity in comparison with any other elastomers. Permeability is good and comparable with butyl.
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Ethylene Propylene (EPDM) (-70° to 275° F)
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Good resistance to sunlight, weathering and ozone. It has poor resistance to petroleum oils and fuel. Good heat and compression set resistance.
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Fluorosilicone (-100° to 350° F)
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The mechanical and physical properties are very similar to silicone. However, fluorosilicone offers improved fuel and mineral-oil resistance but poor hot-air resistance when compared with silicone.
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Fluorocarbon/Fluorosilicone Blend (-25° to 400° F)
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FKM/FVMQ is a propreitary blend of materials; consult supplier for properties.
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Highly-Saturated Nitrile (-40° to 300° F)
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Nitrile has good mechanical properties when compared with other elastomers and high wear resistance. Nitrile is not resistant to weathering and ozone.
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Hydrin (-60° to 300° F)
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Good gas impermeability and maintains physical properties over a wide temperature while maintaining excellent resistance to petroleum oils. Ozone, oxidation, weathering, and sunlight resistances are other qualities.
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Hypalon® (-60° to 300° F)
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Provides excellent ozone, oxidation, sunlight (color degradation), and weather resistance. They are also capable of providing excellent resistance to alkalis and acids.
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Kalrez® (-40° to 600° F)
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High temperature and chemical resistance. Low compression set. Retains its elasticity and recovery properties better than other high temperature elastomers.
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Neoprene (Chloroprene) (-45° to 230° F)
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The first synthetic rubber and exhibits generally good ozone, aging and chemical resistance. It has good mechanical properties over a wide temperature range.
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Nitrile (Buna-N) (-30° to 275° F)
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Good resistance to petroleum hydrocarbons and fuels. Widely used with most oils, hydraulic fluids, and alcohol. Many compound variations for specific applications, the higher the acrylonitrile content, the better the resistance to oil and fuel.
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Polyacrylate (-25° to 350° F)
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Polyacrylate elastomers have good compatibility with higher temperatures. They are well suited for use with extreme pressure (EP) lubricants and have higher resistance to oxidation and ozone. Polyacrylates are not recommended for dry running applications.
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Polyurethane (Millable) (-40° to 180° F)
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Millable urethanes exhibit better resistance to hydraulic fluids than cast urethanes. Polyurethane elastomers, as a class, have excellent wear resistance, high tensile strength and high elasticity in comparison with any other elastomers. Permeability is good and comparable with butyl.
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SBR (BUNA-S) (-30° to 275° F)
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Good resistance to petroleum hydrocarbons and fuels. Widely used with most oils, hydraulic fluids, alcohol. Many compound variations for specific applications.
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Silicone (-65° to 450° F)
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Silicone has a broad temperature range and is generally Odorless / non-toxic. High resistance to sun and ozone and fungus. However it has poor tear and abrasion strength and poor resistance to oils.
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Teflon® (-10° to 450° F)
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Has an excellent temperature range with various chemical and fuel resistances. It has a low coefficient of friction and is non-elastic.
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Teflon-encapsulated Nitrile (-30° to250° F)
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Teflon®-encapsulated O-rings combine the best qualities of Teflon® on the outside with its chemical inertness and an elastomer on the inside for resilience, to form a seal.
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Teflon-encapsulated Silicone (-80° to450° F)
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Teflon®-encapsulated O-rings combine the best qualities of Teflon® on the outside with its chemical inertness and an elastomer on the inside for resilience, to form a seal.
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Teflon-encapsulated Viton® (-10° to 300° F)
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Teflon®-encapsulated O-rings combine the best qualities of Teflon® on the outside with its chemical inertness and an elastomer on the inside for resilience, to form a seal.
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Thiokol (-30° to 300° F)
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A flexible and highly durable elastic rubber product with outstanding oil and chemical-resistance, weather-proofing, and airtight and watertight properties.
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Vamac® (-20° to 300° F)
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Vamac® compounds provide excellent high heat aging resistance to while providing good physical properties. Also has a high degree of oil, ozone, UV, and weather resistance along with good low temperature flexibility.
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Viton® (Fluorocarbon) (-20° to 400° F)
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Excellent high temperature and chemical resistance and mechanical and physical properties. Low compression set and low gas permeability.
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Other
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Select this if you are seeking a specific material not listed above.
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Search Logic:
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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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