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1874640 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1874640: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER POLYISOPRENE SYNTHETIC CLASS IR, hardness_rating: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM, center_hole_diameter: 18.084 INCHES MINIMUM AND 18.396 INCHES MAXIMUM IN, cross-sectional_height: 0.240 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN, end_item_identification: 2330-01-303-5197 PLS TRAILER, material_document_and_classification: PB-16270,CAGEC 63900 MFR REF SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-359-1500, 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
1874640
NSN: 5331-01-359-1500
FSC: 5331 — O-ring
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialRUBBER POLYISOPRENE SYNTHETIC CLASS IR
hardness_rating55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM
center_hole_diameter18.084 INCHES MINIMUM AND 18.396 INCHES MAXIMUM IN
cross-sectional_height0.240 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
end_item_identification2330-01-303-5197 PLS TRAILER
material_document_and_classificationPB-16270,CAGEC 63900 MFR REF SINGLE MATERIAL RESPONSE
NSN5331-01-359-1500
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1874640 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: 0.240 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
•
HARDNESS RATING: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: PB-16270,CAGEC 63900 MFR REF SINGLE MATERIAL RESPONSE
•
CENTER HOLE DIAMETER: 18.084 INCHES MINIMUM AND 18.396 INCHES MAXIMUM IN
•
MATERIAL: RUBBER POLYISOPRENE SYNTHETIC CLASS IR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.240 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
HARDNESS RATING55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONPB-16270,CAGEC 63900 MFR REF SINGLE MATERIAL RESPONSE
CENTER HOLE DIAMETER18.084 INCHES MINIMUM AND 18.396 INCHES MAXIMUM IN
END ITEM IDENTIFICATION2330-01-303-5197 PLS TRAILER
MATERIALRUBBER POLYISOPRENE SYNTHETIC CLASS IR
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 1874640?
1874640 is a O-RING.
What is the NSN for 1874640?
1874640 is cataloged in the U.S. Government catalog under NSN 5331-01-359-1500. This indicates validated use in U.S. government and defense supply chains.
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