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444MES1 — CAP-PLUG,PROTECTIVE,DUST AND MOI

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

444MES1: CAP-PLUG,PROTECTIVE,DUST AND MOI.

CAP-PLUG,PROTECTIVE,DUST AND MOI. Key specifications include material: ALUMINUM, length_under_shoulder: 3.250 INCHES NOMINAL IN, open_end_inside_diameter: 2.430 INCHES NOMINAL IN, closed_end_overall_diameter: 3.472 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-960-9340, 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
444MES1
NSN: 5340-00-960-9340
FSC: 5340 — Hardware, Commercial
CAGE: 05415 — LINDE LIFT TRUCK CORP. (USA)
SPECIFICATIONS
materialALUMINUM
length_under_shoulder3.250 INCHES NOMINAL IN
open_end_inside_diameter2.430 INCHES NOMINAL IN
closed_end_overall_diameter3.472 INCHES NOMINAL IN
NSN5340-00-960-9340
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 444MES1 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
•
CLOSED END OVERALL DIAMETER: 3.472 INCHES NOMINAL IN
•
LENGTH UNDER SHOULDER: 3.250 INCHES NOMINAL IN
•
OPEN END INSIDE DIAMETER: 2.430 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM
TECHNICAL CHARACTERISTICS
CLOSED END OVERALL DIAMETER3.472 INCHES NOMINAL IN
LENGTH UNDER SHOULDER3.250 INCHES NOMINAL IN
OPEN END INSIDE DIAMETER2.430 INCHES NOMINAL IN
MATERIALALUMINUM
SUBSTITUTES & CROSS-REFERENCES 3
5686815Reference document
Same NSN cross-reference
Reference document — Secondary reference
883321Reference document
Same NSN cross-reference
Reference document — Secondary reference
5342PL0778087Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 444MES1?
444MES1 is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace 444MES1?
There are 3 known substitutes for 444MES1: 5686815, 883321, 5342PL0778087. Substitute compatibility should be verified for your specific system.
What is the NSN for 444MES1?
444MES1 is cataloged in the U.S. Government catalog under NSN 5340-00-960-9340. 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.