CA407 | 407pc Imperial O-Ring Assortments Master Kit Nitrile 70 Shore 32 Sizes 1/8 to 2 I.D. 407 Pieces The best fuel resistant gasket material for gasoline is Nitrile (Buna-N) a closed-cell sponge rubber material that provides excellent gasket material for sealing applications that require resistance to gasoline oil fuels as well as solvents hydraulic fluids and mineral and vegetable oils. Replacement Packs Available: Part# I.D. Section Pack Qty C407-1 1/8 1/16 20 C407-2 3/16 1/16 20 C407-3 1/4 1/16 20 C407-4 5/16 1/16 20 C407-5 3/8 1/16 20 C407-6 1/2 1/16 20 C407-7 3/8 3/32 15 C407-8 7/16 3/32 15 C407-9 1/2 3/32 15 C407-10 9/16 3/32 15 C407-11 5/8 3/32 15 C407-12 11/16 3/32 15 C407-13 3/4 3/32 15 C407-14 13/16 3/32 15 C407-15 7/8 3/32 15 C407-16 3/4 1/8 10 C407-17 13/16 1/8 10 C407-18 7/8 1/8 10 C407-19 15/16 1/8 10 C407-20 1 1/8 10 C407-21 1-1/16 1/8 10 C407-22 1-1/8 1/8 10 C407-23 1-3/16 1/8 10 C407-24 1-1/4 1/8 10 C407-25 1-5/16 1/8 10 C407-26 1-3/8 1/8 10 C407-27 1-7/16 1/8 10 C407-28 1-1/2 1/8 10 C407-29 1-5/8 1/8 10 C407-30 1-3/4 1/8 10 C407-31 1-7/8 1/8 10 C407-32 2 1/8 10