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5901312 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5901312: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: COTTON, overall_width: 4.000 INCHES NOMINAL IN, overall_height: 0.500 INCHES NOMINAL IN, style_designator: RECTANGULAR, end_item_identification: USED ON HATCH PER YHS. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-503-6481, 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
5901312
NSN: 5340-01-503-6481
FSC: 5340 — Hardware, Commercial
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialCOTTON
overall_width4.000 INCHES NOMINAL IN
overall_height0.500 INCHES NOMINAL IN
style_designatorRECTANGULAR
end_item_identificationUSED ON HATCH PER YHS
NSN5340-01-503-6481
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5901312 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
•
STYLE DESIGNATOR: RECTANGULAR
•
MATERIAL: COTTON
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.500 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR
OVERALL WIDTH4.000 INCHES NOMINAL IN
END ITEM IDENTIFICATIONUSED ON HATCH PER YHS
MATERIALCOTTON
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 3
123-5901611 PARReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
123-5901311 PART 13Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
123-5901312 PART 39Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5901312?
5901312 is a BUMPER.
What parts can replace 5901312?
There are 3 known substitutes for 5901312: 123-5901611 PAR, 123-5901311 PART 13, 123-5901312 PART 39. Substitute compatibility should be verified for your specific system.
What is the NSN for 5901312?
5901312 is cataloged in the U.S. Government catalog under NSN 5340-01-503-6481. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.