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G42 ✓ 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 GASKET is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, hole_type: PLAINPLAIN, body_diameter: 0.312 INCHES NOMINAL0.312 INCHES NOMINAL IN, overall_length: 0.192 INCHES NOMINAL0.192 INCHES NOMINAL IN, flange_diameter: 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN, outside_diameter: 2.312 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-250-2156, 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
G42
NSN: 5330-00-250-2156
FSC: 5330
CAGE: 86343 — RIEKE CORPORATION DBA RIEKE PACKAGING SYSTEMS DIV RIEKE PACKAGING SYSTEMS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
hole_typePLAINPLAIN
body_diameter0.312 INCHES NOMINAL0.312 INCHES NOMINAL IN
overall_length0.192 INCHES NOMINAL0.192 INCHES NOMINAL IN
flange_diameter0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN
outside_diameter2.312 INCHES NOMINAL IN
special_featuresRUBBER COMPOUND HAVING GOOD RESISTANCE TO PETROLEUM OILS
style_designatorCIRCULAR
aperture_diameter1.843 INCHES NOMINAL IN
surface_treatmentCHROMATE OVERALL
end_item_identification2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR)
cross-sectional_thickness0.125 INCHES NOMINAL IN
NSN5330-00-250-2156
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: G42 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 DIAMETER: 2.312 INCHES NOMINAL IN
•
APERTURE DIAMETER: 1.843 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
CROSS-SECTIONAL THICKNESS: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL: RUBBER SYNTHETIC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER2.312 INCHES NOMINAL IN
APERTURE DIAMETER1.843 INCHES NOMINAL IN
SPECIAL FEATURESRUBBER COMPOUND HAVING GOOD RESISTANCE TO PETROLEUM OILS
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
CROSS-SECTIONAL THICKNESS0.125 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIALRUBBER SYNTHETIC OVERALL
END ITEM IDENTIFICATION2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
21937-2Interchangeable
interchangeable cross-reference
interchangeable
21937-3Interchangeable
interchangeable cross-reference
interchangeable
21937Interchangeable
interchangeable cross-reference
interchangeable
GF510042Interchangeable
interchangeable cross-reference
interchangeable
G42Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G42?
G42 is a GASKET.
What parts can replace G42?
There are 5 known substitutes for G42: 21937-2, 21937-3, 21937 and 2 more. Substitute compatibility should be verified for your specific system.
Is G42 still available?
G42 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026