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Technical Data Sheet
PartsTable / O-RING / 887B051939
887B051939 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 15.262 INCHES MINIMUM AND 15.322 INCHES MAXIMUM IN, cross-sectional_height: 0.073 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-136-8615, 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
887B051939
NSN: 5331-01-136-8615
FSC: 5331 — O-RING
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter15.262 INCHES MINIMUM AND 15.322 INCHES MAXIMUM IN
cross-sectional_height0.073 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
NSN5331-01-136-8615
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 887B051939 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
•
CENTER HOLE DIAMETER: 15.262 INCHES MINIMUM AND 15.322 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.073 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER15.262 INCHES MINIMUM AND 15.322 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.073 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
8708Interchangeable
interchangeable cross-reference
interchangeable
51939Interchangeable
interchangeable cross-reference
interchangeable
6545NCM051789Interchangeable
interchangeable cross-reference
interchangeable
PATIENT HOLD 5261Interchangeable
interchangeable cross-reference
interchangeable
05-1939Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 887B051939?
887B051939 is a O-RING.
What parts can replace 887B051939?
There are 5 known substitutes for 887B051939: 8708, 51939, 6545NCM051789 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 887B051939?
887B051939 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-136-8615. 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