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265-0577-003 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

265-0577-003: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: RUBBER SILICONE, design_type: FRICTION, special_features: COLOR CLEAR TO TRANSLUCENT, width_across_flats: 0.312 INCHES NOMINAL IN, inside_diameter_length: 1.000 INCHES NOMINAL IN, end_item_identification: MGS BATTERY; MISSLIE,MINUTEMAN LGM-30. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-476-3395, 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
265-0577-003
NSN: 5340-01-476-3395
FSC: 5340 — Hardware, Commercial
CAGE: 94756 — THE BOEING COMPANY DIV LEGACY BOEING HB1 (USA)
SPECIFICATIONS
materialRUBBER SILICONE
design_typeFRICTION
special_featuresCOLOR CLEAR TO TRANSLUCENT
width_across_flats0.312 INCHES NOMINAL IN
inside_diameter_length1.000 INCHES NOMINAL IN
end_item_identificationMGS BATTERY; MISSLIE,MINUTEMAN LGM-30
NSN5340-01-476-3395
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 265-0577-003 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
•
WIDTH ACROSS FLATS: 0.312 INCHES NOMINAL IN
•
DESIGN TYPE: FRICTION
•
MATERIAL: RUBBER SILICONE
•
INSIDE DIAMETER LENGTH: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
DESIGN TYPEFRICTION
SPECIAL FEATURESCOLOR CLEAR TO TRANSLUCENT
END ITEM IDENTIFICATIONMGS BATTERY; MISSLIE,MINUTEMAN LGM-30
MATERIALRUBBER SILICONE
INSIDE DIAMETER LENGTH1.000 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 265-0577-003?
265-0577-003 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What is the NSN for 265-0577-003?
265-0577-003 is cataloged in the U.S. Government catalog under NSN 5340-01-476-3395. 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.