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175303 ✓ 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 TANK,FUEL,ENGINE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, hole_diameter: 0.233 INCHES MINIMUM AND 0.239 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 4.090 INCHES MINIMUM AND 4.150 INCHES MAXIMUM IN, style_designator: CIRCULAR, aperture_diameter: 2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM IN, surface_treatment: ANODIZE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-722-2372, 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
175303
NSN: 5330-00-722-2372
FSC: 5330
CAGE: 70210 — HONEYWELL INTERNATIONAL INC. DIV AEROSPACE - TORRANCE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
hole_diameter0.233 INCHES MINIMUM AND 0.239 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter4.090 INCHES MINIMUM AND 4.150 INCHES MAXIMUM IN
style_designatorCIRCULAR
aperture_diameter2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM IN
surface_treatmentANODIZE OVERALL
bolt_hole_quantity6
bolt_circle_diameter3.490 INCHES MINIMUM AND 3.510 INCHES MAXIMUM IN
cross-sectional_thickness0.013 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
cross-sectional_shape_styleRECTANGULAR METAL
material_document_and_classificationQQ-A-250/11,ALLOY 6061,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5330-00-722-2372
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 175303 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: RECTANGULAR METAL
•
MATERIAL: ALUMINUM ALLOY 6061 OVERALL
•
STYLE DESIGNATOR: CIRCULAR
•
HOLE DIAMETER: 0.233 INCHES MINIMUM AND 0.239 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11,ALLOY 6061,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: ANODIZE OVERALL
•
BOLT HOLE QUANTITY: 6
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR METAL
MATERIALALUMINUM ALLOY 6061 OVERALL
STYLE DESIGNATORCIRCULAR
HOLE DIAMETER0.233 INCHES MINIMUM AND 0.239 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11,ALLOY 6061,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
BOLT HOLE QUANTITY6
BOLT CIRCLE DIAMETER3.490 INCHES MINIMUM AND 3.510 INCHES MAXIMUM IN
APERTURE DIAMETER2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
67218Interchangeable
interchangeable cross-reference
interchangeable
6-1-743-2-20Interchangeable
interchangeable cross-reference
interchangeable
6-1-743-2-20AInterchangeable
interchangeable cross-reference
interchangeable
WWT700/6-T6-I-1.750X0.125Interchangeable
interchangeable cross-reference
interchangeable
WW-T-700/6Interchangeable
interchangeable cross-reference
interchangeable
AMS-WW-T-700/6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 175303?
175303 is a TANK,FUEL,ENGINE.
What parts can replace 175303?
There are 15 known substitutes for 175303: 67218, 6-1-743-2-20, 6-1-743-2-20A and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 175303?
175303 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-722-2372. 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