Seals and Washers

The smallest parts in a plumbing job are often the ones that stop leaks. This collection covers the Vibrant Performance crush washers, O-rings and rubber and PTFE washers for AN, ORB, metric, banjo and bulkhead fittings, sold in pairs and multi-packs.

Crush washers

Crush washers seal banjo bolts and metric port fittings by deforming against both faces as the fitting is tightened. They are single use, so keep spares in the right sizes.

O-rings

ORB fittings seal with an O-ring at the base of the thread. Replacing the O-ring every time a fitting is removed prevents slow leaks that are hard to trace.

PTFE and rubber washers

PTFE washers seal bulkhead fittings against fuel cells and panels and resist every common fuel. Rubber washers suit coolant and less demanding uses.

Common questions

Copper or aluminum crush washers? Both seal well. Aluminum is common with aluminum fittings and copper with steel ports.

Are PTFE washers safe with E85? Yes. PTFE is compatible with E85, methanol and race fuels.

How do I size a washer? Match the washer inside diameter to the bolt or fitting thread size given in the listing.

What's in This Collection

  • 30 products from Vibrant Performance, priced from $3.79 to $72.50
  • AN sizes: -3, -4, -6, -8, -10, -12, -16, -20
  • Free shipping on orders over $150

How to Choose

Start with the hose or line size, then the port you are connecting to. AN sizes run in sixteenths of an inch, so -6 AN is 6/16 or 3/8 inch, -8 AN is 1/2 inch and -10 AN is 5/8 inch. Then match the other end: AN flare, NPT pipe thread, ORB with an O-ring, or metric. Pick the angle that points the line where it needs to go without a tight bend right at the fitting.

More Questions

Do AN fittings need thread sealant?

No. AN fittings seal on the 37 degree flare, so sealant on the flare or threads is not needed. Only tapered NPT threads need a sealant.

What is the difference between AN and ORB?

AN fittings seal on a 37 degree flare. ORB fittings use straight threads and seal with an O-ring at the base of the thread, which makes them very leak resistant in ports.