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Technical Data Sheet
4B0291 ✓ 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 GASKET is a the manufacturer industrial component. Key specifications include special_features: IRREGULAR SHAPE CROSS SECTIONAL STYLE; IRREGULAR SHAPE STYLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-352-7626, 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
4B0291
NSN: 5330-00-352-7626
FSC: 5330
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
special_featuresIRREGULAR SHAPE CROSS SECTIONAL STYLE; IRREGULAR SHAPE STYLE
NSN5330-00-352-7626
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4B0291 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESIRREGULAR SHAPE CROSS SECTIONAL STYLE; IRREGULAR SHAPE STYLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
PA20646Interchangeable
interchangeable cross-reference
interchangeable
179082Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/11 ALLOY 7075 TMPRInterchangeable
interchangeable cross-reference
interchangeable
38390Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4B0291?
4B0291 is a GASKET.
What parts can replace 4B0291?
There are 4 known substitutes for 4B0291: PA20646, 179082, AMS-QQ-A-200/11 ALLOY 7075 TMPR and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4B0291?
4B0291 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-352-7626. This indicates validated use in U.S. government and defense supply chains.
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