COMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than o-ring or umbrella seals. This 505 seal has a .630" outer diameter and fits applications with 3/8" valves and .530" OD valve guides.
For more than 35 years, the COMP Cams(R) mission has never changed: to produce the highest-performing products possible, provide customers with superior service, and to lead the industry in technological development. While the COMP Performance Group(TM) has grown to multiple companies and hundreds of employees, we still retain the competitive spirit and desire to be the very best that has positioned COMP Cams(R) as the absolute leader in valve train components.
  • Positive Stop Teflon
  • 1 Year Limited Warranty

Application Summary:

Year Make/Model
1966-1974 American Motors Ambassador
1967-1968 American Motors American
1968-1970 American Motors AMX
1978-1979 American Motors AMX
1966 American Motors Classic
1978-1979 American Motors Concord
1972-1976 American Motors Gremlin
1970-1977 American Motors Hornet
1968-1974 American Motors Javelin
1966-1967 American Motors Marlin
1971-1978 American Motors Matador
1978-1979 American Motors Pacer
1969 American Motors Rambler
1967-1970 American Motors Rebel
1979 American Motors Spirit
1973-1974 Buick Apollo
1971-1973 Buick Centurion
1973-1974 Buick Century
1967-1974 Buick Electra
1976 Buick Electra
1978-1980 Buick Electra
1970-1974 Buick Estate Wagon
1978-1980 Buick Estate Wagon
1967 Buick Gran Sport
1970-1972 Buick GS
1968-1969 Buick GS 350
1968-1969 Buick GS 400
1970-1972 Buick GS 455
1968-1974 Buick LeSabre
1978-1980 Buick LeSabre
1973-1974 Buick Regal
1967-1974 Buick Riviera
1978 Buick Riviera
1967-1972 Buick Skylark
1968 Buick Sportwagon
1970 Buick Sportwagon
1967-1970 Buick Wildcat
2002-2003 Chevrolet Avalanche 2500
1965-1975 Chevrolet Bel Air
1965-1972 Chevrolet Biscayne
1973 Chevrolet Blazer
1972 Chevrolet Brookwood
1975-1980 Chevrolet C10
1968-1974 Chevrolet C10 Pickup
1968-1980 Chevrolet C10 Suburban
1990-1993 Chevrolet C1500
1975-1986 Chevrolet C20
1968-1974 Chevrolet C20 Pickup
1968-1986 Chevrolet C20 Suburban
1991-1999 Chevrolet C2500
1992-1999 Chevrolet C2500 Suburban
1975-1986 Chevrolet C30
1968-1974 Chevrolet C30 Pickup
1988-1999 Chevrolet C3500
1967-1972 Chevrolet Camaro
1966-1976 Chevrolet Caprice
1965-1973 Chevrolet Chevelle
1968 Chevrolet Chevy II
1966-1977 Chevrolet Corvette
1966-1975 Chevrolet El Camino
1996-1999 Chevrolet Express 3500
2001-2002 Chevrolet Express 3500
1973-1974 Chevrolet G10 Van
1976 Chevrolet G20
1973-1974 Chevrolet G20 Van
1975-1976 Chevrolet G30
1988-1996 Chevrolet G30
1973-1974 Chevrolet G30 Van
1965-1976 Chevrolet Impala
1976 Chevrolet K10

Fast Efficient Shipping

Through our distribution network Deliveries can be as fast as Next Day Delivery.
Delivery times vary by destination, tracking information is provided with every purchase.

Get it Installed

JB's Power Centre offers on-site professional installation services in Calgary and Edmonton, AB.
We have on staff licensed Mechanical Technicians as well as MECP Certified 12-Volt Technicians.

* Extend your products Manufacturer Warranty

All products include a manufacturer warranty, but you can extend this warranty with
JB's Purchase Protection Plan
*Available on select products.