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Made in the USA

Pro-werks Easy Turn Filler Cap Replacement O-Ring, Buna Material

Sale price $5.99 USD
Part # C73-749
Select Fill Cap Size

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Replacement Buna O-Rings are available for all of the signature Pro-werks Easy Turn Fill Caps.
Be sure to check out the entire line up - Billet aluminum Easy Turn Fill Caps are a Pro-Werks specialty.

Frequently Asked Questions

Q: Is Buna rubber compatible with my fluid?
A: Buna is a synthetic rubber compound suitable for use with many fluids. Buna components may need to be replaced by a material compatible with the specific chemistry of some fluids.

Q: What should I use to lubricate the Buna O-ring?
A: Applied periodically, a light coating of Dielectric grease has proven to work well as an O-ring lubricant.

Q: How much do I need to tighten a fill cap?
A: It is not necessary to bottom the fill cap into the bung−just adequately seat the O-ring. The radial squeeze action on the O-ring creates a positive seal and helps prevent the cap from coming loose.


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