PartsTable
Technical Data Sheet
PartsTable / COMPONENT / M85731/1-2
M85731/1-2 ✓ 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 M85731/1-2 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-359-1337, 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
M85731/1-2
NSN: 5340-01-359-1337
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM85731/1-2
NSN5340-01-359-1337
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M85731/1-2 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
•
MATERIAL: UNABLE TO DECODE
•
THREAD QUANTITY PER INCH: 24
•
THREAD CLASS: 2A A
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
THREAD SERIES DESIGNATOR: UNF
•
STYLE DESIGNATOR: KNURLED NO. 2
•
THREAD LENGTH: 1.880 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALUNABLE TO DECODE
THREAD QUANTITY PER INCH24
THREAD CLASS2A A
NOMINAL THREAD SIZE0.312 INCHES IN
THREAD SERIES DESIGNATORUNF
STYLE DESIGNATORKNURLED NO. 2
THREAD LENGTH1.880 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
MOUNTING METHODPIN(S)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
902005Upgraded Successor
successor cross-reference
successor
MIL-F-85731Upgraded Successor
successor cross-reference
successor
MS14108-15Upgraded Successor
successor cross-reference
successor
217162Interchangeable
interchangeable cross-reference
interchangeable
232394Interchangeable
interchangeable cross-reference
interchangeable
PP981Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy M85731/1-2?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is M85731/1-2?
M85731/1-2 is a M85731/1-2.
What parts can replace M85731/1-2?
There are 24 known substitutes for M85731/1-2: 902005, MIL-F-85731, MS14108-15 and 21 more. Substitute compatibility should be verified for your specific system.
Is M85731/1-2 still available?
M85731/1-2 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — M85731/1-2

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026