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JIS B2351 ORING

Description & Features

Manufactured by Brennan Industries, this NBR O-ring is designed for use with JIS B2351 BSPP male fittings, providing a reliable face seal in hydraulic and fluid power connections. Nitrile rubber (NBR) construction offers good resistance to petroleum-based fluids, making it well suited for hydraulic circuits and industrial fluid systems.

The JIS B2351 O-Ring conforms to the JIS B2351 thread specification, ensuring dimensional compatibility with corresponding JIS BSPP porting and fittings. California residents should note that this product is subject to a Proposition 65 warning per Brennan's compliance guidelines.

SKU: 9903-06

Supplier Part Number (MPN): 9903-06

Specifications

Brand BRENNAN	Color Black	Connection Size 1 3/8 in	Connection Type BSP	Connection Type 1 BSPP	Dimension Standards JIS B2351	Dimensions 0.094 in W	Durometer 90	Fitting Type O-ring	Inside Diameter 0.54 in	Material Nitrile	Material Construction Nitrile	O-ring Seal Material NBR	Operating Temperature -40 to 250 deg F	Series JIS-BSPP-O-ring Series

Product Questions & Answers (1)

Question by: Bonnie B on Oct 16, 2025, 9:42 PM

Reckon this o-ring will fit my JIS B2351 fitting good and tight? Gotta make sure it seals right.

Answer by: Customer Support on Oct 18, 2025, 6:58 AM

For BSPP male fittings with JIS B2351 threading, this o-ring is designed to provide a reliable face seal. It meets the JIS B2351 thread spec, so it should be a good dimensional match for compatible porting and fittings.