spark plug metal seals
CF Community Team
Joined: Oct 2004
Posts: 19,366
Likes: 5,244
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
Glass bead them or find a old AC spark plug cleaner machine to do the same thing except a much smaller item to use. They could be expensive as antique collectors for garage items may have the only ones available. Similar to air hose machines and gas pumps. I do it for my scooters too. Another point to cover is that those plug gaskets are available separately. I dont know where you can still find them, but E bay? 
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,391
From: At my Bar drinking and wrenching in Lafayette Colorado
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
Glass bead them or find a old AC spark plug cleaner machine to do the same thing except a much smaller item to use. They could be expensive as antique collectors for garage items may have the only ones available. Similar to air hose machines and gas pumps. I do it for my scooters too. Another point to cover is that those plug gaskets are available separately. I dont know where you can still find them, but E bay?
Thread Starter
Racer
Joined: Nov 2003
Posts: 353
Likes: 1
From: Sugar Land, TX
Thanks for the responses. The plugs are Platnium 4 prong in a BMW and were replaced just last spring. Doing a valve cover gasket replacement that the BMW dealer wanted $1,000 plus to do. The money I save doing gasket job myself will pay for new plugs, but if they look good I'm going to reuse.
Race Director
Joined: Nov 1999
Posts: 10,643
Likes: 8
From: Foxfield CO 1970 Convertible