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Technical Data Sheet
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MIL255307 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MIL255307: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-667-9090, 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
MIL255307
NSN: 5340-01-667-9090
FSC: 5340 — Hardware, Commercial
CAGE: 3WRY5 — AIRGAS USA, LLC (USA)
SPECIFICATIONS
Part NumberMIL255307
NSN5340-01-667-9090
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL255307 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
SUBSTITUTES & CROSS-REFERENCES 1
255307Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 MIL255307?
MIL255307 is a COVER,ACCESS.
What parts can replace MIL255307?
There is 1 known substitute for MIL255307: 255307. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL255307?
MIL255307 is cataloged in the U.S. Government catalog under NSN 5340-01-667-9090. This indicates validated use in U.S. government and defense supply chains.
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