Gaskets & O-Rings

Choose your application.

Replacement O-Rings and Gaskets

Replacement Buna O-Rings and Buna flange gaskets are available for all of the signature Pro-werks Easy Turn Fill Caps and Bolt-On Bungs

Be sure to check out the entire line up - Billet aluminum Easy Turn Fill Caps are a Pro-Werks specialty.

Great caps. Great colors.

These bungs utilize the popular non vented Easy Turn Fill Caps that are available variety of Pro-Werks Brilliance anodized colors or beautifully Micro-polished aluminum finish - the finishes are impeccable.

The right size matters.

Easy Turn Fill Caps come in many sizes and are packaged as complete assemblies with your choice of one of the many versatile mounting options, or each component is also available separately.

Watch the Video below to learn more !

Both the Cap and Bung are precision CNC machined from billet aluminum, right here in the USA.

Finish Your Tank

We also offer a full line of weld-in plumbing bungs to complete your tank project.

Click the images below to view all the options.