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Technical Data Sheet
PartsTable / O-RING / NIP-328 ITEM 35
NIP-328 ITEM 35 ✓ 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 O-RING 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 5331-01-186-7533, 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
NIP-328 ITEM 35
NSN: 5331-01-186-7533
FSC: 5331 — O-RING
CAGE: 43990 — NORGREN C A CO (USA)
SPECIFICATIONS
Part NumberNIP-328 ITEM 35
NSN5331-01-186-7533
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NIP-328 ITEM 35 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 21
72001-1Interchangeable
interchangeable cross-reference
interchangeable
72001Interchangeable
interchangeable cross-reference
interchangeable
503-S 1Interchangeable
interchangeable cross-reference
interchangeable
44071Interchangeable
interchangeable cross-reference
interchangeable
150 1Interchangeable
interchangeable cross-reference
interchangeable
MS28775-006Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NIP-328 ITEM 35?
NIP-328 ITEM 35 is a O-RING.
What parts can replace NIP-328 ITEM 35?
There are 21 known substitutes for NIP-328 ITEM 35: 72001-1, 72001, 503-S 1 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NIP-328 ITEM 35?
NIP-328 ITEM 35 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-186-7533. 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