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Technical Data Sheet
PartsTable / COMPONENT / 946.31.05.703
946.31.05.703 ✓ 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 946.31.05.703 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-121-0482, 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
946.31.05.703
NSN: 5340-01-121-0482
FSC: 5340
CAGE: S4080 — PILATUS AIRCRAFT LTD (CHE)
SPECIFICATIONS
Part Number946.31.05.703
NSN5340-01-121-0482
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 946.31.05.703 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
•
DISTANCE FROM LOOP CENTER TO TONGUE END: 0.620 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693,TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.045 INCHES NOMINAL IN
•
TONGUE HOLE TYPE: ROUND, UNTHREADED
•
STYLE DESIGNATOR: SINGLE LOOP
•
DIAMETER: 0.165 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
DISTANCE FROM LOOP CENTER TO TONGUE END0.620 INCHES NOMINAL IN
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693,TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.045 INCHES NOMINAL IN
TONGUE HOLE TYPEROUND, UNTHREADED
OVERALL WIDTH0.380 INCHES NOMINAL IN
STYLE DESIGNATORSINGLE LOOP
DIAMETER0.165 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
LOOP INSIDE DIAMETER0.220 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE0.430 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
HP4NUpgraded Successor
successor cross-reference
successor
CH4MUpgraded Successor
successor cross-reference
successor
SM-C-687385-3Upgraded Successor
successor cross-reference
successor
710876-4Interchangeable
interchangeable cross-reference
interchangeable
A05764Interchangeable
interchangeable cross-reference
interchangeable
642AS2504-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 946.31.05.703?
946.31.05.703 is a 946.31.05.703.
What parts can replace 946.31.05.703?
There are 20 known substitutes for 946.31.05.703: HP4N, CH4M, SM-C-687385-3 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 946.31.05.703?
946.31.05.703 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-121-0482. 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