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06 BUNA O-RING

Description & Features

This 06 Buna O-Ring is constructed from 90 Durometer NBR material.

Designed for MORB/SAE ports, this O-ring ensures a reliable seal in hydraulic applications. It is compatible with 3/8" tube OD and features a 0.468" inner diameter.

SKU: 4000-06

Supplier Part Number (MPN): 4000-06

Specifications

Color Black	Dash Size 06	Dimensions 0.078 in W	Durometer 90	Inside Diameter 0.475 in	Material Nitrile	Series SAE-J1926-ORB-O-ring Series	Suitable For Use With 3/8 in Tube OD ORB

Product Questions & Answers (3)

Question by: Curt B on Jan 13, 2026, 4:54 PM

got a 3/8 tube OD fitting on a hydraulic line that needs a new o-ring, this the right size for that?

Answer by: Customer Support on Jan 15, 2026, 6:55 AM

For a 3/8" tube OD MORB/SAE port, yes, this is the correct o-ring. The 0.468" inner diameter and the 06 sizing are both matched to that port spec, so it should drop right in where the old one came out.

Question by: Hugh P on May 18, 2025, 4:25 PM

Will this o-ring work with a standard 3/8" tube?

Answer by: Customer Support on May 20, 2025, 8:50 AM

This o-ring is indeed designed for use with 3/8" OD tubes, making it suitable for MORB/SAE ports.

Question by: Daryl B on Nov 16, 2025, 4:50 PM

got a MORB/SAE port on a 3/8 tube line, is this the right o-ring or am i off a size

Answer by: Customer Support on Nov 18, 2025, 12:01 PM

For a MORB or SAE port tied to 3/8 inch tube OD, this one matches that callout. It is the 06 size Buna N (NBR) O-ring with a 0.468 inch inner diameter.