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990-4042 — RING,WIPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

990-4042: RING,WIPER.

The RING,WIPER is a the manufacturer industrial component. Key specifications include material: UNABLE TO DECODE, ring_style: CONCENTRIC, inside_diameter: 21.5 MILLIMETERS NOMINAL MM, outside_diameter: 28.7 MILLIMETERS NOMINAL MM, surface_treatment: UNABLE TO DECODE, outer_edge_thickness: 2.0 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-157-4326, 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
990-4042
NSN: 5330-01-157-4326
NIINs: 011574326, 012956152
FSC: 5330 — Packing and Gasket Materials
CAGE: 34914 — HIAB USA INC (USA)
SPECIFICATIONS
materialUNABLE TO DECODE
ring_styleCONCENTRIC
inside_diameter21.5 MILLIMETERS NOMINAL MM
outside_diameter28.7 MILLIMETERS NOMINAL MM
surface_treatmentUNABLE TO DECODE
outer_edge_thickness2.0 MILLIMETERS NOMINAL MM
end_item_identificationHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS); 2320-01-097-0260 HIAB CRANE (HEMTT)
cross-sectional_shape_stylePLAIN RECTANGULAR, STRAIGHT FACE
NSN5330-01-157-4326
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 990-4042 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
•
OUTER EDGE THICKNESS: 2.0 MILLIMETERS NOMINAL MM
•
CROSS-SECTIONAL SHAPE STYLE: PLAIN RECTANGULAR, STRAIGHT FACE
•
OUTSIDE DIAMETER: 28.7 MILLIMETERS NOMINAL MM
•
INSIDE DIAMETER: 21.5 MILLIMETERS NOMINAL MM
•
RING STYLE: CONCENTRIC
•
SURFACE TREATMENT: UNABLE TO DECODE
•
MATERIAL: UNABLE TO DECODE
TECHNICAL CHARACTERISTICS
OUTER EDGE THICKNESS2.0 MILLIMETERS NOMINAL MM
CROSS-SECTIONAL SHAPE STYLEPLAIN RECTANGULAR, STRAIGHT FACE
OUTSIDE DIAMETER28.7 MILLIMETERS NOMINAL MM
INSIDE DIAMETER21.5 MILLIMETERS NOMINAL MM
RING STYLECONCENTRIC
SURFACE TREATMENTUNABLE TO DECODE
END ITEM IDENTIFICATIONHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS); 2320-01-097-0260 HIAB CRANE (HEMTT)
MATERIALUNABLE TO DECODE
SUBSTITUTES & CROSS-REFERENCES 1
2AW808Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 990-4042?
990-4042 is a RING,WIPER.
What parts can replace 990-4042?
There is 1 known substitute for 990-4042: 2AW808. Substitute compatibility should be verified for your specific system.
What is the NSN for 990-4042?
990-4042 is cataloged in the U.S. Government catalog under NSN 5330-01-157-4326. This indicates validated use in U.S. government and defense supply chains.
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