Competition Cams a trusted industry leader. Backed by manufacturer’s warranty. Designed for good performance.
- Quality Material – Made from Viton, these seals are a great performance upgrade from factory O-ring style seals.
- Machine Work Required – Unlike factory style O-Ring seals that ride on the valve, these seals attach to the guide. Machining of the guide is typically required.
- Better Clearance – Smaller outside diameter, these Viton seals offer more clearance for performance dual and beehive valve springs.
- Fits Engines w/ 0.530″ OD Valve Guides and 11/32″ Valve Stems
- Made in USA
- Fit type: Vehicle Specific









Wayne B. –
Great part and even better price no regrets on my choice here
Marvin P. Flanders –
A must for triple springs if you want to control oil on your valve guides!
Courtney D Post –
Great part fit just like it should
Johnathon –
Arrived on time what I needed
Amazon Customer –
easy install fit very well
Bruce Jenkins Big Wrench Restoration LLC –
Umbrella seals work better
Chris P –
Good seals but be careful with the small springs when installing, had to buy a second set as i mashed a couple of springs on the first set.
Dean Colburn –
The O.D. for these valve seals are .530, the I.D. is .525 by rough measurement with a caliper. The factory O.D. for the guides on the head are .530. .005 larger than the .525 I.D. of this seal. These valve seals do not fit factory heads. The factory guides must be cut to accept these. I wish the advertisement stated this instead of saying they are for .530 “GUIDE SIZE”.