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Technical Data Sheet
PartsTable / COMPONENT / 3537 MOD ITEM 38
3537 MOD ITEM 38 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-299-7325, 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
3537 MOD ITEM 38
NSN: 5330-01-299-7325
FSC: 5330
CAGE: U3374 — CAT PUMPS (UK) LTD (GBR)
SPECIFICATIONS
Part Number3537 MOD ITEM 38
NSN5330-01-299-7325
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3537 MOD ITEM 38 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 17
11345Interchangeable
interchangeable cross-reference
interchangeable
11346Interchangeable
interchangeable cross-reference
interchangeable
MILS5944Interchangeable
interchangeable cross-reference
interchangeable
2380Interchangeable
interchangeable cross-reference
interchangeable
899238Interchangeable
interchangeable cross-reference
interchangeable
683660Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3537 MOD ITEM 38?
3537 MOD ITEM 38 is a PACKING,PREFORMED.
What parts can replace 3537 MOD ITEM 38?
There are 17 known substitutes for 3537 MOD ITEM 38: 11345, 11346, MILS5944 and 14 more. Substitute compatibility should be verified for your specific system.
Is 3537 MOD ITEM 38 still available?
3537 MOD ITEM 38 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026