Seals-It Firewall Grommet Seals are ideal for passing wiring, hoses, hard lines, throttle cables and what have you, through the firewall into your interior.

Made from a fireproof nitrile rubber material bonded to an aluminium bezel, the seals are designed to stretch to let components pass through, then spring back into place to seal them tightly.

That helps prevent damage from abrasion or chafing while keeping dust and fumes out of the cockpit.

Seals-It Firewall Grommet Seals are available as one-piece push-through or two-piece split grommets designed for use with existing hose, line, or wiring.

https://www.summitracing.com/search/brand/seals-it ENDS.