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1653908 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1653908: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 2.780 INCHES NOMINAL IN, length: 3.280 INCHES NOMINAL IN, securing_device_type: SPECIAL, peripheral_shape_style: RECTANGLE, ONE CENTER HOLE, distance_from_first_hole_centerline_to_end_along_width: 1.390 INCHES NOMINAL IN, distance_from_first_hole_centerline_to_end_along_length: 1.640 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-373-5016, 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
1653908
NSN: 5340-01-373-5016
FSC: 5340 — Hardware, Commercial
CAGE: 05869 — RAYTHEON COMPANY DIV RMD STRATEGIC (USA)
SPECIFICATIONS
width2.780 INCHES NOMINAL IN
length3.280 INCHES NOMINAL IN
securing_device_typeSPECIAL
peripheral_shape_styleRECTANGLE, ONE CENTER HOLE
distance_from_first_hole_centerline_to_end_along_width1.390 INCHES NOMINAL IN
distance_from_first_hole_centerline_to_end_along_length1.640 INCHES NOMINAL IN
NSN5340-01-373-5016
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1653908 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
•
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH: 1.390 INCHES NOMINAL IN
•
LENGTH: 3.280 INCHES NOMINAL IN
•
SECURING DEVICE TYPE: SPECIAL
•
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH: 1.640 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: RECTANGLE, ONE CENTER HOLE
•
WIDTH: 2.780 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH1.390 INCHES NOMINAL IN
LENGTH3.280 INCHES NOMINAL IN
SECURING DEVICE TYPESPECIAL
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH1.640 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLERECTANGLE, ONE CENTER HOLE
WIDTH2.780 INCHES NOMINAL IN
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: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1653908?
1653908 is a COVER,ACCESS.
What is the NSN for 1653908?
1653908 is cataloged in the U.S. Government catalog under NSN 5340-01-373-5016. 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.