Comp Cams 11/32 Metal W/Teflon Seal 4rGen3 When pressure difference in chambers

When pressure difference in chambers A & B reach a maximum

shown in the illustration

our Tundra rack provides a strong

Sportvan 1969 - 1974 Chevrolet G10 Van Base 1968 - 1974 Chevrolet G10 Van Sportvan 1995 Chevrolet G20 Base 1983 - 1984 Chevrolet G20 Bonaventure 1975 - 1995 Chevrolet G20 Chevy Van

Comp Cams 11/32 Metal W/Teflon Seal 4rGen3 When pressure difference in chambersCOMP Cams offers a complete line of valve stem seals, from the stock GM "O Ring" to the positive stop PTFE seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The "O Ring" seals use the standard retainer and oil splash shield. The umbrella seal is normally used when a larger than stock diameter spring is used, in the case of a double spring, the positive stop PTFE seal is