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84137 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, overall_height: 1.778 INCHES NOMINAL IN, body_outside_diameter: 3.293 INCHES NOMINAL IN, seating_surface_shape: FLAT, thread_quantity_per_inch: 14 SINGLE THREADED PORTION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-656-2541, 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
84137
NSN: 5340-00-656-2541
FSC: 5340
CAGE: 72599 — ALLIEDSIGNAL INC DBA ALLIED-SIGNAL AEROSPACE CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
overall_height1.778 INCHES NOMINAL IN
body_outside_diameter3.293 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_quantity_per_inch14 SINGLE THREADED PORTION
NSN5340-00-656-2541
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 84137 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
•
WIDTH: 0.620 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 321
•
SHAPE: RECTANGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6721 MIL SPEC SINGLE MATERIAL RESPONSE
•
THICKNESS: 0.063 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH0.620 INCHES NOMINAL IN
MATERIALSTEEL COMP 321
SHAPERECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6721 MIL SPEC SINGLE MATERIAL RESPONSE
THICKNESS0.063 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
79675Interchangeable
interchangeable cross-reference
interchangeable
84137Interchangeable
interchangeable cross-reference
interchangeable
84137KInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 84137?
84137 is a SEAT,VALVE.
What parts can replace 84137?
There are 3 known substitutes for 84137: 79675, 84137, 84137K. Substitute compatibility should be verified for your specific system.
What is the NSN for 84137?
84137 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-656-2541. 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