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PartsTable / COMPONENT / G21-3
G21-3 ✓ 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 TERMINAL,CASUALTY POWER SYSTEM is a the manufacturer industrial component. Key specifications include material: STEEL, body_length: 0.530 INCHES MAXIMUM IN, gross_weight: 27.0 SHIPPING CONTAINER POUNDS AND 5070.0 PALLET POUNDS, end_condition: PLAIN, inside_length: 2.250 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN, opening_width: 1.000 INCHES MINIMUM AND 1.120 INCHES MAXIMUM 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 5330-00-236-1411, 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
G21-3
NSN: 5330-00-236-1411
FSC: 5330
CAGE: 08302 — PACCAR WINCH INC DBA PACCAR WINCH DIVISION (USA)
SPECIFICATIONS
materialSTEEL
body_length0.530 INCHES MAXIMUM IN
gross_weight27.0 SHIPPING CONTAINER POUNDS AND 5070.0 PALLET POUNDS
end_conditionPLAIN
inside_length2.250 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN
opening_width1.000 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN
overall_width0.435 INCHES MAXIMUM IN
overall_length0.780 INCHES MAXIMUM IN
fuze_delay_time0.010 SECONDS NOMINAL
hardness_rating80.0 SHORE DUROMETER A MINIMUM OVERALL
terminal_length0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
special_featuresFOR BOMB,M9 AND FUZE M905
NSN5330-00-236-1411
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: G21-3 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 SHAPE STYLE: CUP
•
RIM SURFACE WIDTH: 0.062 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 30-H-30 FSCM 70438 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 80.0 SHORE DUROMETER A MINIMUM OVERALL
•
PERIPHERAL DIAMETER: 1.375 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
CENTER HOLE DIAMETER: 1.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLECUP
RIM SURFACE WIDTH0.062 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION30-H-30 FSCM 70438 MFR REF SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING80.0 SHORE DUROMETER A MINIMUM OVERALL
PERIPHERAL DIAMETER1.375 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
CENTER HOLE DIAMETER1.062 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
187940PC63Interchangeable
interchangeable cross-reference
interchangeable
184382PC63Interchangeable
interchangeable cross-reference
interchangeable
184367PC63Interchangeable
interchangeable cross-reference
interchangeable
50303AInterchangeable
interchangeable cross-reference
interchangeable
760LXInterchangeable
interchangeable cross-reference
interchangeable
11984B101Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G21-3?
G21-3 is a TERMINAL,CASUALTY POWER SYSTEM.
What parts can replace G21-3?
There are 22 known substitutes for G21-3: 187940PC63, 184382PC63, 184367PC63 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G21-3?
G21-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-236-1411. 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