Radium Catch Can O-Ring Service Kit, Standard Cans

Radium Engineering Catch Can O-Ring Service Kit for Standard Catch Cans - Part #20-0057

Every time a Radium catch can gets unscrewed to drain it, the canister O-ring and the dipstick O-ring take a little wear, and after enough oil changes one of them starts weeping oil down the side of the can. The 20-0057 service kit is two of each, sized for Radium's standard catch cans, so you can reseal the can in five minutes instead of living with the drip.

What It Is and Why It Works

The kit has two small green dipstick O-rings, about 0.27 inch, and two large black canister O-rings, about 2.1 inch, which is one set for the can plus a spare of each. The canister O-ring seals the threaded joint between the head and the canister, which is the joint you open to drain; the dipstick O-ring seals the dipstick tube so a pressure-sealed can holds vacuum when it's plumbed to the manifold. Both are fuel and oil compatible. They fit Radium's standard catch cans, which includes the cans in Radium's vehicle-specific kits, but not the AOS-R air oil separator or the larger Competition Catch Can, which use different sizes.

Specs

Fitment

Not vehicle-specific. Confirm which Radium can you have before ordering; the Competition can uses a different canister diameter.

What to Know Before You Buy

Lube the O-rings with a little engine oil before they go on; a dry O-ring twists in the groove when you thread the canister and leaks worse than the one you replaced. Replace the canister O-ring every couple of years or whenever the can starts weeping, and the dipstick O-ring any time the dipstick pulls out too easily; on a manifold-referenced can that leak is a vacuum leak, not just a drip. Keep the spares in the glovebox; you'll drop one in the gravel at the track eventually.