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Technical Data Sheet
PartsTable / O-RING / FCB25752
FCB25752 ✓ 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: CORK OVERALL, hole_diameter: 0.265 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, aperture_width: 5.750 INCHES NOMINAL IN, aperture_length: 9.750 INCHES NOMINAL IN, style_designator: OVAL, bolt_hole_quantity: 24. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-263-7955, 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
FCB25752
NSN: 5331-00-263-7955
FSC: 5331 — O-RING
CAGE: 05476 — AMERICAN FUEL CELL AND COATED FABRICS COMPANY, LLC (USA)
SPECIFICATIONS
materialCORK OVERALL
hole_diameter0.265 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
aperture_width5.750 INCHES NOMINAL IN
aperture_length9.750 INCHES NOMINAL IN
style_designatorOVAL
bolt_hole_quantity24
bearing_surface_width2.125 INCHES NOMINAL IN
cross-sectional_height0.070 INCHES NOMINAL IN
cross-sectional_thickness0.055 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationNC-711 FSCM 89262 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5331-00-263-7955
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: FCB25752 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
•
CROSS-SECTIONAL HEIGHT: 0.070 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.070 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
H-H-771 TY1CL2STBInterchangeable
interchangeable cross-reference
interchangeable
H-H-771Interchangeable
interchangeable cross-reference
interchangeable
76075Interchangeable
interchangeable cross-reference
interchangeable
FCB25752Interchangeable
interchangeable cross-reference
interchangeable
L1001Interchangeable
interchangeable cross-reference
interchangeable
X76075-AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FCB25752?
FCB25752 is a O-RING.
What parts can replace FCB25752?
There are 11 known substitutes for FCB25752: H-H-771 TY1CL2STB, H-H-771, 76075 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FCB25752?
FCB25752 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-263-7955. 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