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491-0061-010 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

491-0061-010: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include length: 4.281 INCHES NOMINAL IN, peripheral_shape_style: ROUND, TWO EARS AND HOLES, end_item_identification: 4320-01-507-0595, distance_between_holes_along_length: 3.344 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-617-9253, 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
491-0061-010
NSN: 5340-01-617-9253
FSC: 5340 — Hardware, Commercial
CAGE: 3C2U0 — J-LINE PUMP CO. DBA AMERICAN-MARSH PUMPS (USA)
SPECIFICATIONS
length4.281 INCHES NOMINAL IN
peripheral_shape_styleROUND, TWO EARS AND HOLES
end_item_identification4320-01-507-0595
distance_between_holes_along_length3.344 INCHES NOMINAL IN
NSN5340-01-617-9253
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 491-0061-010 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
•
LENGTH: 4.281 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 3.344 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND, TWO EARS AND HOLES
TECHNICAL CHARACTERISTICS
LENGTH4.281 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH3.344 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND, TWO EARS AND HOLES
END ITEM IDENTIFICATION4320-01-507-0595
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

No substitute or cross-reference records for this part.

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 491-0061-010?
491-0061-010 is a COVER,ACCESS.
What is the NSN for 491-0061-010?
491-0061-010 is cataloged in the U.S. Government catalog under NSN 5340-01-617-9253. 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.