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CBU1959 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

CBU1959: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. This part is cataloged in the U.S. Government catalog under NSN 5330-01-379-8396, 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
CBU1959
NSN: 5330-01-379-8396
FSC: 5330 — Packing and Gasket Materials
CAGE: U5612 — LEYLAND TRUCKS LTD (FOR SPARE PARTS SEE U6425) (GBR)
SPECIFICATIONS
Part NumberCBU1959
NSN5330-01-379-8396
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CBU1959 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
SUBSTITUTES & CROSS-REFERENCES 2
3919725Reference document
Same NSN cross-reference
Reference document — Secondary reference
3923261Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CBU1959?
CBU1959 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What parts can replace CBU1959?
There are 2 known substitutes for CBU1959: 3919725, 3923261. Substitute compatibility should be verified for your specific system.
What is the NSN for CBU1959?
CBU1959 is cataloged in the U.S. Government catalog under NSN 5330-01-379-8396. This indicates validated use in U.S. government and defense supply chains.
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