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667331 ✓ 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 SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include width: 5.000 INCHES NOMINAL IN, length: 7.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-286-6870, 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
667331
NSN: 5330-00-286-6870
FSC: 5330
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
width5.000 INCHES NOMINAL IN
length7.000 INCHES NOMINAL IN
special_featuresLOW SPEED, DOUBLE EMULSION. ULTRA-FINE GRAIN. ASTM CLASS I FILM. IDEAL FOR COMPOSITES OR WHERE ULTIMATE IMAGE QUALITY IS NEEDED.
NSN5330-00-286-6870
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 667331 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
•
ACCOMMODATED SHAFT DIAMETER: 1.625 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 3.2495 INCHES MINIMUM AND 3.2525 INCHES MAXIMUM IN
•
MATERIAL: LEATHER AND RUBBER SYNTHETIC OVERALL
•
SEAL WIDTH: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: ANGULAR
•
CASE STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER1.625 INCHES NOMINAL IN
HOUSING BORE DIAMETER3.2495 INCHES MINIMUM AND 3.2525 INCHES MAXIMUM IN
MATERIALLEATHER AND RUBBER SYNTHETIC OVERALL
SEAL WIDTH0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
SEALING ELEMENT STYLEANGULAR
CASE STYLESQUARE
MATERIALSTEEL CASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
84476Interchangeable
interchangeable cross-reference
interchangeable
21616Interchangeable
interchangeable cross-reference
interchangeable
D21616Interchangeable
interchangeable cross-reference
interchangeable
2150700Interchangeable
interchangeable cross-reference
interchangeable
49431Interchangeable
interchangeable cross-reference
interchangeable
366816-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 667331?
667331 is a SEAL,PLAIN ENCASED.
What parts can replace 667331?
There are 20 known substitutes for 667331: 84476, 21616, D21616 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 667331?
667331 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-286-6870. 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