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5266208 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5266208: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: GLASS FIBER, hole_diameter: 0.278 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN, securing_device_type: SPECIAL, mounting_opening_shape_style: UNTHREADED HOLE, part_name_assigned_by_controlling_agency: CAP, UMBICAL DRUM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-328-1740, 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
5266208
NSN: 5340-01-328-1740
NIINs: 013281740, 014780750
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialGLASS FIBER
hole_diameter0.278 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
securing_device_typeSPECIAL
mounting_opening_shape_styleUNTHREADED HOLE
part_name_assigned_by_controlling_agencyCAP, UMBICAL DRUM
NSN5340-01-328-1740
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5266208 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: 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN
•
INSIDE CORNER RADIUS: 6.000 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 2.400 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-C-17549 MIL SPEC SINGLE MATERIAL RESPONSE
•
SECURING DEVICE TYPE: SPECIAL
•
INSIDE DIAMETER: 9.540 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN
INSIDE CORNER RADIUS6.000 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT2.400 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-17549 MIL SPEC SINGLE MATERIAL RESPONSE
SECURING DEVICE TYPESPECIAL
INSIDE DIAMETER9.540 INCHES NOMINAL IN
SPECIAL FEATURESITEM HAS FIBER GLASS IN MATERIAL
PERIPHERAL SHAPE STYLERECTANGLE, NO HOLES
WIDTH9.740 INCHES NOMINAL IN
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 5266208?
5266208 is a COVER,ACCESS.
What is the NSN for 5266208?
5266208 is cataloged in the U.S. Government catalog under NSN 5340-01-328-1740. 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.