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Technical Data Sheet
PartsTable / COMPONENT / 556894-1
556894-1 ✓ 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 STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 1.500 INCHES NOMINAL IN, diameter: 0.250 INCHES NOMINAL IN, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, cross-sectional_shape: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-018-0139, 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
556894-1
NSN: 5340-00-018-0139
FSC: 5340
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
length1.500 INCHES NOMINAL IN
diameter0.250 INCHES NOMINAL IN
style_designatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
cross-sectional_shapeROUND
NSN5340-00-018-0139
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 556894-1 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
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS
•
LENGTH: 1.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE: ROUND
•
DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORLEFT INTERNAL AND RIGHT INTERNAL THREADS
LENGTH1.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEROUND
DIAMETER0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
8329Upgraded Successor
successor cross-reference
successor
698983-000Interchangeable
interchangeable cross-reference
interchangeable
A232316Interchangeable
interchangeable cross-reference
interchangeable
522307Interchangeable
interchangeable cross-reference
interchangeable
M7469957PT2Interchangeable
interchangeable cross-reference
interchangeable
P7767536REV6PT9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 556894-1?
556894-1 is a STANDOFF,THREADED,SPACING.
What parts can replace 556894-1?
There are 18 known substitutes for 556894-1: 8329, 698983-000, A232316 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 556894-1?
556894-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-018-0139. 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