COMP 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...

Fits: 11/32" Valve Stems - OE-Size Valve Guides (.750" Outer Diameter)Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guidesNormally used when a...

3/8 X .500 Viton Metal Body Seal .540 OD Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 521 seal has a .545" OD...

Fits: 3/8" Valve Stems - .530" Guides (.630" Seal Diameter)Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guidesSmaller diameter than COMP Umbrella...

Fits: 3/8" Valve Stems - .500" Guides (.600" Seal Diameter)Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guidesSmaller diameter than COMP Umbrella...

Fits: 3/8" Valve Stems - OE-Size Valve Guides (.900" Outer Diameter)Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guidesNormally used when a...

3/8 X .530 Viton Metal Body Seal .574 OD Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 522 seal has a .575" OD...

5/16 X .500 Viton Metal Body Seal .546 OD Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 519 seal has a .545"...

Fits: 5/16" Valve Stems - .530" Guides (.630" Outer Diameter)Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guidesSmaller diameter than COMP...

Fits: 5/16" Valve Stems - .500" Guides (.600" Seal Diameter)Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guidesSmaller diameter than COMP...

Valve Seals: Black Viton, .425 Guide, 5/16 Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. These 530 seals have a ...