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EC311 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

EC311: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: RUBBER, design_type: MOLDED, overall_length: 38.10 MILLIMETERS NOMINAL MM, inside_diameter_length: 19.05 MILLIMETERS NOMINAL MM, round_cap_outside_surface_condition: SMOOTH, material_document_and_classification: MANUFACTURE REFERENCE MFR REF SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-705-8479, 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
EC311
NSN: 5340-01-705-8479
FSC: 5340 — Hardware, Commercial
CAGE: 15819 — SINCLAIR & RUSH, INC. DBA SINCLAIR & RUSH INC (USA)
SPECIFICATIONS
materialRUBBER
design_typeMOLDED
overall_length38.10 MILLIMETERS NOMINAL MM
special_featuresCAP COLOR IS BLACK,WALL THACKNESS IS 1.52 MILLIMETERS NOMINAL,TEMPERATURE RANGE 316 DEGREES CELSIUS NOMINAL,USED ON AIRPOART HANDLING EQUIPMENT MM
inside_diameter_length19.05 MILLIMETERS NOMINAL MM
round_cap_outside_surface_conditionSMOOTH
material_document_and_classificationMANUFACTURE REFERENCE MFR REF SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyEPDM CAP
NSN5340-01-705-8479
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: EC311 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
•
DESIGN TYPE: MOLDED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MANUFACTURE REFERENCE MFR REF SINGLE MATERIAL RESPONSE
•
MATERIAL: RUBBER
•
INSIDE DIAMETER LENGTH: 19.05 MILLIMETERS NOMINAL MM
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
TECHNICAL CHARACTERISTICS
DESIGN TYPEMOLDED
MATERIAL DOCUMENT AND CLASSIFICATIONMANUFACTURE REFERENCE MFR REF SINGLE MATERIAL RESPONSE
OVERALL LENGTH38.10 MILLIMETERS NOMINAL MM
SPECIAL FEATURESCAP COLOR IS BLACK,WALL THACKNESS IS 1.52 MILLIMETERS NOMINAL,TEMPERATURE RANGE 316 DEGREES CELSIUS NOMINAL,USED ON AIRPOART HANDLING EQUIPMENT MM
PART NAME ASSIGNED BY CONTROLLING AGENCYEPDM CAP
MATERIALRUBBER
INSIDE DIAMETER LENGTH19.05 MILLIMETERS NOMINAL MM
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
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 1
042000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is EC311?
EC311 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace EC311?
There is 1 known substitute for EC311: 042000. Substitute compatibility should be verified for your specific system.
What is the NSN for EC311?
EC311 is cataloged in the U.S. Government catalog under NSN 5340-01-705-8479. This indicates validated use in U.S. government and defense supply chains.
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