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Technical Data Sheet
PartsTable / O-RING / 3537.MOD ITEM 13
3537.MOD ITEM 13 ✓ 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 3537.MOD ITEM 13 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 5331-01-273-1538, 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 13
NSN: 5331-01-273-1538
FSC: 5331 — O-RING
CAGE: U3374 — CAT PUMPS (UK) LTD (GBR)
SPECIFICATIONS
Part Number3537.MOD ITEM 13
NSN5331-01-273-1538
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3537.MOD ITEM 13 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 19
3590113Interchangeable
interchangeable cross-reference
interchangeable
756-2866Interchangeable
interchangeable cross-reference
interchangeable
8P72Interchangeable
interchangeable cross-reference
interchangeable
20285Interchangeable
interchangeable cross-reference
interchangeable
20285R51MInterchangeable
interchangeable cross-reference
interchangeable
A07521.004.132Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3537.MOD ITEM 13?
3537.MOD ITEM 13 is a 3537.MOD ITEM 13.
What parts can replace 3537.MOD ITEM 13?
There are 19 known substitutes for 3537.MOD ITEM 13: 3590113, 756-2866, 8P72 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3537.MOD ITEM 13?
3537.MOD ITEM 13 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-273-1538. 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