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978B368H01 ✓ 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 RING HOIST SAFETY is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL,BLACK OXIDE MIL-C-13924 CL 2,5.838 IN. LG,3.125 IN.

WIDE 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 5340-01-057-6268, 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
978B368H01
NSN: 5340-01-057-6268
FSC: 5340
CAGE: 18323 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA ELECTRONIC SYSTEMS (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,BLACK OXIDE MIL-C-13924 CL 2,5.838 IN. LG,3.125 IN. WIDE IN
NSN5340-01-057-6268
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 978B368H01 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,BLACK OXIDE MIL-C-13924 CL 2,5.838 IN. LG,3.125 IN. WIDE IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,BLACK OXIDE MIL-C-13924 CL 2,5.838 IN. LG,3.125 IN. WIDE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
5166-2Interchangeable
interchangeable cross-reference
interchangeable
5166Interchangeable
interchangeable cross-reference
interchangeable
STD3000E38-86730Interchangeable
interchangeable cross-reference
interchangeable
M83248/1-233Interchangeable
interchangeable cross-reference
interchangeable
385982Interchangeable
interchangeable cross-reference
interchangeable
T09088Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 978B368H01?
978B368H01 is a RING HOIST SAFETY.
What parts can replace 978B368H01?
There are 15 known substitutes for 978B368H01: 5166-2, 5166, STD3000E38-86730 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 978B368H01?
978B368H01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-057-6268. 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