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04 BUNA O-RING

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 4000-04	Product Weight 0.00 lbs

Product Questions & Answers 2

Product Questions & Answers

got a 1/4" tube line coming off a MORB port that keeps seeping, this the right o-ring to fix that?

Question by: Phil P on May 28, 2025, 9:46 PM

For a 1/4" tube OD on a MORB/SAE port, yes, that's exactly what this one's built for. It's sized with an ID of 0.351mm and made from 90 durometer NBR, so it seats firm and holds up to the kind of wear that causes slow seeps over time. Part number is 4000-04 if you want to double-check it against your fitment before ordering.

Answer by: Customer Support on May 30, 2025, 1:36 PM

trying to swap out an o-ring on a 1/4 tube MORB/SAE port, is this the right size?

Question by: Earl M on Apr 29, 2025, 8:29 PM

For MORB/SAE port service on a 1/4 inch tube OD connection, this one matches that port style and size callout, and it uses an ID of 0.351 mm with a 0.072 mm overall length for the seal.

Answer by: Customer Support on May 1, 2025, 6:00 AM