O-rings, Grommets and Vacuum Caps
This category covers the small sealing and rebuild parts that keep fuel, oil and filter systems airtight, including O-rings, grommets, vacuum caps and filter rebuild kits. Products like the System 1 O-ring kit for 4" spin-on filters and the Peterson 600 Series rebuild kit for methanol systems are designed to restore a tight seal on existing housings rather than replace the whole unit.
Choosing the right one comes down to what you're sealing and what's running through it. Methanol, fuel and oil all need different seal materials, so check the kit is rated for your application, and match it to the specific filter or housing it's going into.
Frequently asked questions
Can I use any O-ring kit on my filter?
No, match the kit to your specific filter model and the fluid running through it, as seal materials vary for fuel, oil and methanol.
When should I rebuild a filter instead of replacing it?
If the housing is in good condition, a rebuild kit with fresh O-rings and seals can restore it without buying a new filter.
