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Technical Data Sheet
P31020 ✓ 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 BUCKLE 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 5340-00-605-1645, 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
P31020
NSN: 5340-00-605-1645
FSC: 5340
CAGE: U1604 — MARTIN-BAKER AIRCRAFT COMPANY LIMITED (GBR)
SPECIFICATIONS
Part NumberP31020
NSN5340-00-605-1645
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: P31020 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
5141701Upgraded Successor
successor cross-reference
successor
33175Interchangeable
interchangeable cross-reference
interchangeable
7150203Interchangeable
interchangeable cross-reference
interchangeable
BNCRPL3M55Interchangeable
interchangeable cross-reference
interchangeable
9191299Interchangeable
interchangeable cross-reference
interchangeable
921029-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is P31020?
P31020 is a BUCKLE.
What parts can replace P31020?
There are 8 known substitutes for P31020: 5141701, 33175, 7150203 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P31020?
P31020 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-605-1645. This indicates validated use in U.S. government and defense supply chains.
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