Buna N
Available in sizes 1/2"–12" (DN 15–300)
Maximum temperature rating of 180°F (82°C)
Complies to FDA and USDA

Black Butyl
Available in sizes Bio-Tek–12" (DN 8–300)
Maximum temperature rating of 250°F (121°C)
Complies to FDA and USDA

White Butyl
Available in sizes 1/2"–8" (DN 15–200)
Maximum temperature rating of 225°F (107°C)
Complies to FDA and USDA