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Technical Data Sheet
321-357 ✓ 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 GENERATOR,ENGINE ACCESSORY is a the manufacturer industrial component. Key specifications include end_item_identification: 016667770, part_name_assigned_by_controlling_agency: SCREW,MACHINE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-200-1247, 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
321-357
NSN: 5331-01-200-1247
FSC: 5331 — O-RING
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
end_item_identification016667770
part_name_assigned_by_controlling_agencySCREW,MACHINE
NSN5331-01-200-1247
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 321-357 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 3
1100250Interchangeable
interchangeable cross-reference
interchangeable
321-357Interchangeable
interchangeable cross-reference
interchangeable
1101307Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 321-357?
321-357 is a GENERATOR,ENGINE ACCESSORY.
What parts can replace 321-357?
There are 3 known substitutes for 321-357: 1100250, 321-357, 1101307. Substitute compatibility should be verified for your specific system.
What is the NSN for 321-357?
321-357 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-200-1247. This indicates validated use in U.S. government and defense supply chains.
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