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Technical Data Sheet
PartsTable / COMPONENT / 256854PC3
256854PC3 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, rim_surface_width: 0.188 INCHES NOMINAL IN, inner_groove_width: 0.172 INCHES NOMINAL IN, peripheral_diameter: 1.500 INCHES NOMINAL IN, center_hole_diameter: 1.125 INCHES NOMINAL IN, cross-sectional_height: 0.234 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-297-3632, 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
256854PC3
NSN: 5330-00-297-3632
FSC: 5330
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
rim_surface_width0.188 INCHES NOMINAL IN
inner_groove_width0.172 INCHES NOMINAL IN
peripheral_diameter1.500 INCHES NOMINAL IN
center_hole_diameter1.125 INCHES NOMINAL IN
cross-sectional_height0.234 INCHES NOMINAL IN
cross-sectional_shape_styleSPECIAL
NSN5330-00-297-3632
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 256854PC3 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
•
RIM SURFACE WIDTH: 0.188 INCHES NOMINAL IN
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR OVERALL
•
CENTER HOLE DIAMETER: 1.125 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
INNER GROOVE WIDTH: 0.172 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.234 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 1.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
RIM SURFACE WIDTH0.188 INCHES NOMINAL IN
MATERIALRUBBER CHLOROPRENE CLASS CR OVERALL
CENTER HOLE DIAMETER1.125 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESPECIAL
INNER GROOVE WIDTH0.172 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.234 INCHES NOMINAL IN
PERIPHERAL DIAMETER1.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
271678PC2Interchangeable
interchangeable cross-reference
interchangeable
146392PC21Interchangeable
interchangeable cross-reference
interchangeable
12Z62PC7Interchangeable
interchangeable cross-reference
interchangeable
5330-207Interchangeable
interchangeable cross-reference
interchangeable
271744PC5Interchangeable
interchangeable cross-reference
interchangeable
299496PC5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 256854PC3?
256854PC3 is a PACKING,PREFORMED.
What parts can replace 256854PC3?
There are 28 known substitutes for 256854PC3: 271678PC2, 146392PC21, 12Z62PC7 and 25 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 256854PC3?
256854PC3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-297-3632. 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