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Technical Data Sheet
PartsTable / O-RING / U(BI-20S)
U(BI-20S) ✓ 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 U(BI-20S) 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 5331-00-712-8926, 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
U(BI-20S)
NSN: 5331-00-712-8926
FSC: 5331 — O-RING
CAGE: 99098 — BACON INDUSTRIES, INC. (USA)
SPECIFICATIONS
Part NumberU(BI-20S)
NSN5331-00-712-8926
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: U(BI-20S) 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
•
CROSS-SECTIONAL HEIGHT: 0.060 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SYNTHETIC
CROSS-SECTIONAL HEIGHT0.060 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
AN535-00-4Interchangeable
interchangeable cross-reference
interchangeable
UInterchangeable
interchangeable cross-reference
interchangeable
LTCT9915Interchangeable
interchangeable cross-reference
interchangeable
VInterchangeable
interchangeable cross-reference
interchangeable
2088016-8Interchangeable
interchangeable cross-reference
interchangeable
U-NCSETAT85DEGFInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is U(BI-20S)?
U(BI-20S) is a U(BI-20S).
What parts can replace U(BI-20S)?
There are 6 known substitutes for U(BI-20S): AN535-00-4, U, LTCT9915 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for U(BI-20S)?
U(BI-20S) is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-712-8926. 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