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459257 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

459257: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 6.875 INCHES NOMINAL IN, length: 29.562 INCHES NOMINAL IN, material: PLASTIC ACRYLATE AND STEEL CORROSION RESISTING, body_thickness: 0.300 INCHES NOMINAL IN, flange_thickness: 0.088 INCHES NOMINAL IN, features_provided: SEALING CAPABILITY AND OBSERVATION FACILITY. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-173-4651, 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
459257
NSN: 5340-00-173-4651
FSC: 5340 — Hardware, Commercial
CAGE: 19139 — EASTMAN KODAK CO (USA)
SPECIFICATIONS
width6.875 INCHES NOMINAL IN
length29.562 INCHES NOMINAL IN
materialPLASTIC ACRYLATE AND STEEL CORROSION RESISTING
body_thickness0.300 INCHES NOMINAL IN
flange_thickness0.088 INCHES NOMINAL IN
features_providedSEALING CAPABILITY AND OBSERVATION FACILITY
securing_device_typeSPRING CLIP
peripheral_shape_styleRECTANGLE, NO HOLES
cross-sectional_shape_styleFLAT, SQUARE OR RECTANGULAR RIB REINFORCED
NSN5340-00-173-4651
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 459257 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: 29.562 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.088 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: FLAT, SQUARE OR RECTANGULAR RIB REINFORCED
•
FEATURES PROVIDED: SEALING CAPABILITY AND OBSERVATION FACILITY
•
SECURING DEVICE TYPE: SPRING CLIP
•
PERIPHERAL SHAPE STYLE: RECTANGLE, NO HOLES
•
WIDTH: 6.875 INCHES NOMINAL IN
•
MATERIAL: PLASTIC ACRYLATE AND STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
LENGTH29.562 INCHES NOMINAL IN
FLANGE THICKNESS0.088 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEFLAT, SQUARE OR RECTANGULAR RIB REINFORCED
FEATURES PROVIDEDSEALING CAPABILITY AND OBSERVATION FACILITY
SECURING DEVICE TYPESPRING CLIP
PERIPHERAL SHAPE STYLERECTANGLE, NO HOLES
WIDTH6.875 INCHES NOMINAL IN
MATERIALPLASTIC ACRYLATE AND STEEL CORROSION RESISTING
BODY THICKNESS0.300 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 459257?
459257 is a COVER,ACCESS.
What is the NSN for 459257?
459257 is cataloged in the U.S. Government catalog under NSN 5340-00-173-4651. 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.