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Technical Data Sheet
PartsTable / COMPONENT / 3657-49-1
3657-49-1 ✓ 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 KIT REPAIR 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 5330-01-218-2985, 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
3657-49-1
NSN: 5330-01-218-2985
FSC: 5330
CAGE: 13859 — KING NUTRONICS CORPORATION DBA KING NUTRONICS (USA)
SPECIFICATIONS
Part Number3657-49-1
NSN5330-01-218-2985
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3657-49-1 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 20
6090Interchangeable
interchangeable cross-reference
interchangeable
1431-9-11Interchangeable
interchangeable cross-reference
interchangeable
1431-4-5Interchangeable
interchangeable cross-reference
interchangeable
623863Interchangeable
interchangeable cross-reference
interchangeable
060905Interchangeable
interchangeable cross-reference
interchangeable
RW28051107Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3657-49-1?
3657-49-1 is a KIT REPAIR.
What parts can replace 3657-49-1?
There are 20 known substitutes for 3657-49-1: 6090, 1431-9-11, 1431-4-5 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3657-49-1?
3657-49-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-218-2985. 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