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Technical Data Sheet
PartsTable / COMPONENT / 6451-1
6451-1 ✓ 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

VALVE,REGULATING,FLUID PRESSURE. Key specifications include end_item_identification: 804-H-CUP AIRCONDITIONING UNIT, part_name_assigned_by_controlling_agency: WHEEL HUB. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-251-4714, 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
6451-1
NSN: 5330-00-251-4714
FSC: 5330
CAGE: 22593 — FITZGERALD GASKET A CO OF TANNETICS INC (USA)
SPECIFICATIONS
end_item_identification804-H-CUP AIRCONDITIONING UNIT
part_name_assigned_by_controlling_agencyWHEEL HUB
NSN5330-00-251-4714
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6451-1 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
KEY FEATURES
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
BOLT CIRCLE DIAMETER: 2.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
APERTURE DIAMETER: 1.000 INCHES NOMINAL IN
•
MATERIAL: PAPER AND GLUE AND GLYCERIN OVERALL
•
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
•
OUTSIDE CORNER RADIUS: 0.344 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 2
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
BOLT CIRCLE DIAMETER2.250 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
APERTURE DIAMETER1.000 INCHES NOMINAL IN
MATERIALPAPER AND GLUE AND GLYCERIN OVERALL
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.344 INCHES NOMINAL IN
BOLT HOLE QUANTITY2
MATERIAL DOCUMENT AND CLASSIFICATIONHH-P-96 FED SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL WIDTH2.938 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
83405BInterchangeable
interchangeable cross-reference
interchangeable
C311-411Interchangeable
interchangeable cross-reference
interchangeable
24716Interchangeable
interchangeable cross-reference
interchangeable
33665Interchangeable
interchangeable cross-reference
interchangeable
9147Interchangeable
interchangeable cross-reference
interchangeable
92104Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6451-1?
6451-1 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 6451-1?
There are 18 known substitutes for 6451-1: 83405B, C311-411, 24716 and 15 more. Substitute compatibility should be verified for your specific system.
Is 6451-1 still available?
6451-1 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