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PartsTable / COMPONENT / 167-6926191 REV E PC NO 178
167-6926191 REV E PC NO 178 ✓ 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

CAP,PROTECTIVE,DUST AND MOISTURE. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-670-1887, 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
167-6926191 REV E PC NO 178
NSN: 5340-01-670-1887
FSC: 5340
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number167-6926191 REV E PC NO 178
NSN5340-01-670-1887
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 167-6926191 REV E PC NO 178 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
167-7044216 REV A PC NO 124Interchangeable
interchangeable cross-reference
interchangeable
01855607Interchangeable
interchangeable cross-reference
interchangeable
FF-S-86Interchangeable
interchangeable cross-reference
interchangeable
167-6926191 PC 199Interchangeable
interchangeable cross-reference
interchangeable
167-6926191 REV E PC NO 199Interchangeable
interchangeable cross-reference
interchangeable
167-6926191 REV EInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 167-6926191 REV E PC NO 178?
167-6926191 REV E PC NO 178 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 167-6926191 REV E PC NO 178?
There are 22 known substitutes for 167-6926191 REV E PC NO 178: 167-7044216 REV A PC NO 124, 01855607, FF-S-86 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 167-6926191 REV E PC NO 178?
167-6926191 REV E PC NO 178 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-670-1887. 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