PartsTable
Technical Data Sheet
PartsTable / COMPONENT / M85731/1-9CP
M85731/1-9CP ✓ 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 M85731/1-9CP is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-225-1619, 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
M85731/1-9CP
NSN: 5340-01-225-1619
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM85731/1-9CP
NSN5340-01-225-1619
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M85731/1-9CP 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
•
THREAD SERIES DESIGNATOR: UNF
•
THREAD CLASS: 3A A
•
THREAD LENGTH: 1.375 INCHES NOMINAL IN
•
MATERIAL: UNABLE TO DECODE
•
THREAD QUANTITY PER INCH: 24
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF
THREAD CLASS3A A
THREAD LENGTH1.375 INCHES NOMINAL IN
MATERIALUNABLE TO DECODE
THREAD QUANTITY PER INCH24
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
SPECIAL FEATURESINCLUDES SELF-POSITIONING FEATURE
STYLE DESIGNATORKNURLED NO. 2
MOUNTING METHODPIN(S)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
MIL-F-85731/1Upgraded Successor
successor cross-reference
successor
M85731/1-12Upgraded Successor
successor cross-reference
successor
MS14108-9CPInterchangeable
Same NIIN cross-reference
interchangeable
MIL-DTL-85731/1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy M85731/1-9CP?
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 M85731/1-9CP?
M85731/1-9CP is a M85731/1-9CP.
What parts can replace M85731/1-9CP?
There are 4 known substitutes for M85731/1-9CP: MIL-F-85731/1, M85731/1-12, MS14108-9CP and 1 more. Substitute compatibility should be verified for your specific system.
Is M85731/1-9CP still available?
M85731/1-9CP 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 — M85731/1-9CP

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