We offer a wide variety of sizes, colors, and materials in our gasket line, specifically selected for the food and beverage industries. For more specifics on your application please contact our product specialist at 1-800-826-8301.

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Item/Material Temperature
Range
Chemical Resistance1 Tear
Resistance
Durometer2 General Information
Nitric
Acid
Phosphoric
Acid
Sodium
Hypochlorite
Chlorine Fats/Oils
Standard
Buna-N -40 to 225°F Poor Excellent Poor Poor Excellent Excellent 72 Standard Dairy & Food industry gasket. High volume equates to lowest cost. Does not hold up well to Nitric based CIP cleaners. Standard black, also white.
EPDM -60 to 300°F Fair Excellent Excellent Poor Good Fair 70 Good general Dairy and Food gasket. Better overall chemical resistance than Buna—not quite as good fat/oil. Standard black, also white.
Viton -20 to 400°F Excellent Excellent Excellent Fair Excellent Excellent 80 Best overall chemical resistance of common rubber gaskets. Highest price point. Standard black, also white.
Silicone -80 to 450°F Poor Poor Good Poor Good Fair 70 More common in pharmaceutical than dairy. Good overall chemical resistance. Excellent temp range. Softer durometer. Generally white or red color.
Teflon -100 to 500°F Excellent Excellent Excellent Excellent Excellent Excellent 56 Excellent chemical & temp resistance. Very hard durometer can make sealing difficult in pipeline gasket application. Standard white, also blue.
Specialty
Poly-SS -320 to 550°F Excellent Excellent Excellent Excellent Excellent Excellent 68 Passivated Stainless Steel & Teflon blended in molten state (prior to molding). Highest chemical & temp resistance. Hard durometer. Highest price point. 
Metal Detectable See base
rubber
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rubber
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rubber
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rubber
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rubber
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rubber
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rubber
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rubber
Ferrous powder mixed with rubber in molten state (prior to molding). Has same general characteristics as base rubber. Standard in Silicone & Buna. Blue color.
Color-Coded See base
rubber
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rubber
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rubber
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rubber
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rubber
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rubber
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rubber
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rubber
Color code by area or date changed. Has same general characteristics as base rubber. Standard Buna. Others with minimum.
Teflon Envelope -20 to 400°F Excellent Excellent Excellent Excellent Excellent Excellent 65-75 A “sandwich” Teflon wrapped around Viton. Gives some better sealing than standard Teflon, but still not as good as rubber.
1Information from Rubber Fav Chemical Resistance Chart. Phosphoric Acid—20%; Nitric Acid—Dilute; Chlorine—Wet.
2Typical—actual may vary depending on manufacturer.

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