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Technical Data Sheet
PartsTable / O-RING / 7.660-103
7.660-103 ✓ 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 7.660-103 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 5331-01-095-6400, 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
7.660-103
NSN: 5331-01-095-6400
FSC: 5331 — O-RING
CAGE: 25024 — PORTER SEAL CO (USA)
SPECIFICATIONS
Part Number7.660-103
NSN5331-01-095-6400
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7.660-103 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
KEY FEATURES
•
CENTER HOLE DIAMETER: 7.570 INCHES MINIMUM AND 7.750 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER7.570 INCHES MINIMUM AND 7.750 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
10090Interchangeable
interchangeable cross-reference
interchangeable
7660-103Interchangeable
interchangeable cross-reference
interchangeable
966044-1CInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7.660-103?
7.660-103 is a 7.660-103.
What parts can replace 7.660-103?
There are 3 known substitutes for 7.660-103: 10090, 7660-103, 966044-1C. Substitute compatibility should be verified for your specific system.
What is the NSN for 7.660-103?
7.660-103 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-095-6400. 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