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PartsTable / COMPONENT / M85049/138-34B
M85049/138-34B ✓ 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 M85049/138-34B 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 5340-01-234-2875, 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
M85049/138-34B
NSN: 5340-01-234-2875
FSC: 5340
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
Part NumberM85049/138-34B
NSN5340-01-234-2875
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M85049/138-34B 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
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
•
INSIDE DIAMETER LENGTH: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.018 INCHES MINIMUM AND 1.038 INCHES MAXIMUM IN
•
OVERALL DIAMETER: 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-81705, TYPE 2 MIL SPEC SINGLE MATERIAL RESPONSE
•
DESIGN TYPE: FRICTION
TECHNICAL CHARACTERISTICS (FLIS)
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
SPECIAL FEATURESCOLOR-YELLOW
INSIDE DIAMETER LENGTH0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
MATERIALPLASTIC
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.018 INCHES MINIMUM AND 1.038 INCHES MAXIMUM IN
OVERALL DIAMETER1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-81705, TYPE 2 MIL SPEC SINGLE MATERIAL RESPONSE
DESIGN TYPEFRICTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
1219270-8Upgraded Successor
successor cross-reference
successor
NAS813-18Upgraded Successor
successor cross-reference
successor
34310513062Upgraded Successor
successor cross-reference
successor
MS90376-40YUpgraded Successor
successor cross-reference
successor
MIL-C-5501Upgraded Successor
successor cross-reference
successor
AS90376Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M85049/138-34B?
M85049/138-34B is a M85049/138-34B.
What parts can replace M85049/138-34B?
There are 16 known substitutes for M85049/138-34B: 1219270-8, NAS813-18, 34310513062 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M85049/138-34B?
M85049/138-34B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-234-2875. 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