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PartsTable / COMPONENT / 534259-1
534259-1 ✓ 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 PLUNGER,QUICK RELEASE is a the manufacturer industrial component. Key specifications include shape: ROUND, thread_length: 0.437 INCHES NOMINAL IN, overall_length: 0.437 INCHES NOMINAL IN, nominal_thread_size: 0.164 INCHES IN, thread_quantity_per_inch: 36, thread_series_designator: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-256-3206, 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
534259-1
NSN: 5340-01-256-3206
FSC: 5340
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
shapeROUND
thread_length0.437 INCHES NOMINAL IN
overall_length0.437 INCHES NOMINAL IN
nominal_thread_size0.164 INCHES IN
thread_quantity_per_inch36
thread_series_designatorUNF
NSN5340-01-256-3206
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 534259-1 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
•
SHAPE: ROUND
•
THREAD LENGTH: 0.437 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNF
•
THREAD QUANTITY PER INCH: 36
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
SHAPEROUND
OVERALL LENGTH0.437 INCHES NOMINAL IN
THREAD LENGTH0.437 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH36
NOMINAL THREAD SIZE0.164 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
8105169Interchangeable
interchangeable cross-reference
interchangeable
M50PInterchangeable
interchangeable cross-reference
interchangeable
RW90-4GALVInterchangeable
interchangeable cross-reference
interchangeable
4940PL1140779Interchangeable
interchangeable cross-reference
interchangeable
T-5000-PInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 534259-1?
534259-1 is a PLUNGER,QUICK RELEASE.
What parts can replace 534259-1?
There are 5 known substitutes for 534259-1: 8105169, M50P, RW90-4GALV and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 534259-1?
534259-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-256-3206. 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