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Technical Data Sheet
PartsTable / COMPONENT / 740285-2
740285-2 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: LEAD OVERALL, hole_diameter: 0.185 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 3.156 INCHES NOMINAL IN, aperture_width: 2.969 INCHES NOMINAL IN, overall_length: 4.594 INCHES NOMINAL IN, aperture_length: 4.406 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 5330-00-138-6224, 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
740285-2
NSN: 5330-00-138-6224
FSC: 5330
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialLEAD OVERALL
hole_diameter0.185 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width3.156 INCHES NOMINAL IN
aperture_width2.969 INCHES NOMINAL IN
overall_length4.594 INCHES NOMINAL IN
aperture_length4.406 INCHES NOMINAL IN
inside_corner_radius0.062 INCHES NOMINAL IN
outside_corner_radius0.750 INCHES NOMINAL IN
cross-sectional_thickness0.047 INCHES NOMINAL IN
cross-sectional_shape_styleRECTANGULAR METAL
inside_corner_inverted_radius0.188 INCHES NOMINAL IN
material_document_and_classificationQQ-L-201,GR B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-138-6224
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 740285-2 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
•
PERIPHERAL DIAMETER: 2.439 INCHES NOMINAL IN
•
JOINT TYPE: BUTT OVERALL
•
CROSS-SECTIONAL HEIGHT: 0.116 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE AND GRAPHITE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
CENTER HOLE DIAMETER: 1.167 INCHES MINIMUM AND 1.177 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL DIAMETER2.439 INCHES NOMINAL IN
JOINT TYPEBUTT OVERALL
CROSS-SECTIONAL HEIGHT0.116 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE AND GRAPHITE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
CENTER HOLE DIAMETER1.167 INCHES MINIMUM AND 1.177 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
7871Interchangeable
interchangeable cross-reference
interchangeable
7402852Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 740285-2?
740285-2 is a PACKING,PREFORMED.
What parts can replace 740285-2?
There are 2 known substitutes for 740285-2: 7871, 7402852. Substitute compatibility should be verified for your specific system.
What is the NSN for 740285-2?
740285-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-138-6224. 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