PartsTable
Technical Data Sheet
PartsTable / O-RING / 43-02-75
43-02-75 ✓ 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 INSULATOR,WASHER is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q, overall_height: 0.002 INCHES NOMINAL IN, inside_diameter: 0.771 INCHES MINIMUM AND 0.791 INCHES MAXIMUM IN, outside_diameter: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN, style_designator: ROUND, FLAT, center_hole_diameter: 2.974 INCHES MINIMUM AND 3.004 INCHES MAXIMUM 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 5331-00-062-1249, 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
43-02-75
NSN: 5331-00-062-1249
FSC: 5331 — O-RING
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q
overall_height0.002 INCHES NOMINAL IN
inside_diameter0.771 INCHES MINIMUM AND 0.791 INCHES MAXIMUM IN
outside_diameter1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
style_designatorROUND, FLAT
center_hole_diameter2.974 INCHES MINIMUM AND 3.004 INCHES MAXIMUM IN
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
identification_code_colorAMBER
NSN5331-00-062-1249
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 43-02-75 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
•
CENTER HOLE DIAMETER: 2.974 INCHES MINIMUM AND 3.004 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SILICONE CLASS Q
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER2.974 INCHES MINIMUM AND 3.004 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MATERIALRUBBER SILICONE CLASS Q
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
430275Interchangeable
interchangeable cross-reference
interchangeable
107798-4Interchangeable
interchangeable cross-reference
interchangeable
G57PAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 43-02-75?
43-02-75 is a INSULATOR,WASHER.
What parts can replace 43-02-75?
There are 3 known substitutes for 43-02-75: 430275, 107798-4, G57PA. Substitute compatibility should be verified for your specific system.
What is the NSN for 43-02-75?
43-02-75 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-062-1249. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026