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476878 ✓ 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 RETAINER,PACKING is a the manufacturer industrial component. Key specifications include peripheral_diameter: 3.937 INCHES NOMINAL IN, center_hole_diameter: 1.625 INCHES NOMINAL IN, cross-sectional_height: 0.375 INCHES NOMINAL IN, cross-sectional_shape_style: OVAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-484-1232, 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
476878
NSN: 5330-00-484-1232
FSC: 5330
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
peripheral_diameter3.937 INCHES NOMINAL IN
center_hole_diameter1.625 INCHES NOMINAL IN
cross-sectional_height0.375 INCHES NOMINAL IN
cross-sectional_shape_styleOVAL
NSN5330-00-484-1232
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 476878 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
•
CROSS-SECTIONAL HEIGHT: 0.375 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.625 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 3.937 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: OVAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.375 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.625 INCHES NOMINAL IN
PERIPHERAL DIAMETER3.937 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEOVAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
56304Interchangeable
interchangeable cross-reference
interchangeable
SM2499Interchangeable
interchangeable cross-reference
interchangeable
17T470Interchangeable
interchangeable cross-reference
interchangeable
MILB11040Interchangeable
interchangeable cross-reference
interchangeable
3289U7D20Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 476878?
476878 is a RETAINER,PACKING.
What parts can replace 476878?
There are 5 known substitutes for 476878: 56304, SM2499, 17T470 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 476878?
476878 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-484-1232. 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