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Technical Data Sheet
PartsTable / COMPONENT / 402618
402618 ✓ 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

COVER,FEED MECHANISM,MACHINE GUN. Key specifications include part_name_assigned_by_controlling_agency: COVER, RECEIVER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-209-9345, 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
402618
NSN: 5340-00-209-9345
FSC: 5340
CAGE: 02978 — RENK AMERICA LLC DIV RENK AMERICA (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyCOVER, RECEIVER
NSN5340-00-209-9345
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 402618 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
•
OUTSIDE/TOP FLANGE DIAMETER: 0.500 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
•
BOTTOM FLANGE WIDTH: 0.125 INCHES NOMINAL IN
•
BOTTOM FLANGE DIAMETER: 0.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: DOUBLE FLANGE
•
GROOVE DIAMETER: 0.313 INCHES NOMINAL IN
•
TOP FLANGE WIDTH: 0.063 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE/TOP FLANGE DIAMETER0.500 INCHES NOMINAL IN
OVERALL HEIGHT0.266 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
BOTTOM FLANGE WIDTH0.125 INCHES NOMINAL IN
BOTTOM FLANGE DIAMETER0.875 INCHES NOMINAL IN
STYLE DESIGNATORDOUBLE FLANGE
GROOVE DIAMETER0.313 INCHES NOMINAL IN
TOP FLANGE WIDTH0.063 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
WK1Upgraded Successor
successor cross-reference
successor
175Upgraded Successor
successor cross-reference
successor
E1Y14-4.5Upgraded Successor
successor cross-reference
successor
402618Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 402618?
402618 is a COVER,FEED MECHANISM,MACHINE GUN.
What parts can replace 402618?
There are 4 known substitutes for 402618: WK1, 175, E1Y14-4.5 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 402618?
402618 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-209-9345. 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