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Technical Data Sheet
PartsTable / O-RING / 5/37
5/37 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The 5/37 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-085-4532, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
5/37
NSN: 5331-01-085-4532
FSC: 5331 — O-RING
CAGE: 32862 — SHIPS MACHINERY INTERNATIONAL, INC. (USA)
SPECIFICATIONS
Part Number5/37
NSN5331-01-085-4532
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5/37 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: RUBBER SYNTHETIC
•
CENTER HOLE DIAMETER: 210.0 MILLIMETERS NOMINAL MM
•
CROSS-SECTIONAL HEIGHT: 4.0 MILLIMETERS NOMINAL MM
•
HARDNESS RATING: 90.0 SHORE DUROMETER A NOMINAL
•
COLOR: BLACK
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SYNTHETIC
CENTER HOLE DIAMETER210.0 MILLIMETERS NOMINAL MM
END ITEM IDENTIFICATIONUSED ON BOW THRUSTER ONBOARD 378 FT WHEC COAST GUARD VESSELS FT
CROSS-SECTIONAL HEIGHT4.0 MILLIMETERS NOMINAL MM
HARDNESS RATING90.0 SHORE DUROMETER A NOMINAL
COLORBLACK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
300230Interchangeable
interchangeable cross-reference
interchangeable
O00230Interchangeable
interchangeable cross-reference
interchangeable
91328978Interchangeable
interchangeable cross-reference
interchangeable
10690806-4Interchangeable
interchangeable cross-reference
interchangeable
128C845H03Interchangeable
interchangeable cross-reference
interchangeable
M15370/3-012Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5/37?
5/37 is a 5/37.
What parts can replace 5/37?
There are 10 known substitutes for 5/37: 300230, O00230, 91328978 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5/37?
5/37 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-085-4532. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026