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12299456 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12299456: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 4.750 INCHES NOMINAL IN, length: 18.750 INCHES NOMINAL IN, material: RUBBER AND ALUMINUM ALLOY 5086, body_thickness: 0.090 INCHES NOMINAL IN, corner_bevel_length: 0.500 INCHES NOMINAL IN, securing_device_type: SPECIAL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-119-5859, 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
12299456
NSN: 5340-01-119-5859
FSC: 5340 — Hardware, Commercial
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
width4.750 INCHES NOMINAL IN
length18.750 INCHES NOMINAL IN
materialRUBBER AND ALUMINUM ALLOY 5086
body_thickness0.090 INCHES NOMINAL IN
corner_bevel_length0.500 INCHES NOMINAL IN
securing_device_typeSPECIAL
peripheral_shape_styleRECTANGLE, MULTI HOLES
hole_quantity_along_width2
hole_quantity_along_length4
cross-sectional_shape_styleFLAT
distance_between_holes_along_length6.000 INCHES NOMINAL IN
distance_from_first_hole_centerline_to_end_along_width2.375 INCHES NOMINAL IN
NSN5340-01-119-5859
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12299456 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: 2.375 INCHES NOMINAL IN
•
LENGTH: 18.750 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 6.000 INCHES NOMINAL IN
•
HOLE QUANTITY ALONG LENGTH: 4
•
DISTANCE BETWEEN HOLE CENTERLINE AND FIRST HOLE ALONG LENGTH: 5.500 INCHES NOMINAL IN
•
CORNER BEVEL LENGTH: 0.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
SECURING DEVICE TYPE: SPECIAL
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH2.375 INCHES NOMINAL IN
LENGTH18.750 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH6.000 INCHES NOMINAL IN
HOLE QUANTITY ALONG LENGTH4
DISTANCE BETWEEN HOLE CENTERLINE AND FIRST HOLE ALONG LENGTH5.500 INCHES NOMINAL IN
CORNER BEVEL LENGTH0.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEFLAT
SECURING DEVICE TYPESPECIAL
HOLE QUANTITY ALONG WIDTH2
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH6.500 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 1
10086773Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12299456?
12299456 is a COVER,ACCESS.
What parts can replace 12299456?
There is 1 known substitute for 12299456: 10086773. Substitute compatibility should be verified for your specific system.
What is the NSN for 12299456?
12299456 is cataloged in the U.S. Government catalog under NSN 5340-01-119-5859. 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.