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Technical Data Sheet
PartsTable / O-RING / 91638528
91638528 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, center_hole_diameter: 0.669 INCHES MINIMUM AND 0.679 INCHES MAXIMUM IN, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-551-0471, 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
91638528
NSN: 5331-00-551-0471
FSC: 5331 — O-RING
CAGE: F6481 — THALES SA (FRA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
center_hole_diameter0.669 INCHES MINIMUM AND 0.679 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
NSN5331-00-551-0471
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 91638528 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
•
MATERIAL: RUBBER SYNTHETIC
•
CENTER HOLE DIAMETER: 0.669 INCHES MINIMUM AND 0.679 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SYNTHETIC
CENTER HOLE DIAMETER0.669 INCHES MINIMUM AND 0.679 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
0758-0002Interchangeable
interchangeable cross-reference
interchangeable
705-6267-000Interchangeable
interchangeable cross-reference
interchangeable
RNC60H5620FRInterchangeable
interchangeable cross-reference
interchangeable
241/S258-12Interchangeable
interchangeable cross-reference
interchangeable
5P7760Interchangeable
interchangeable cross-reference
interchangeable
1100-00-0082Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91638528?
91638528 is a O-RING.
What parts can replace 91638528?
There are 10 known substitutes for 91638528: 0758-0002, 705-6267-000, RNC60H5620FR and 7 more. Substitute compatibility should be verified for your specific system.
Is 91638528 still available?
91638528 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