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640401-1 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

640401-1: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC POLYVINYL CHLORIDE (PVC), design_type: FRICTION, special_features: COLOR YELLOW, inside_diameter_length: 1.250 INCHES MAXIMUM IN, round_cap_outside_surface_condition: SMOOTH, material_document_and_classification: AIRESEARCH MFG CO, EMS 53109 MFR REF SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-250-6969, 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
640401-1
NSN: 5340-01-250-6969
FSC: 5340 — Hardware, Commercial
CAGE: 25205 — MOLDED DEVICES, INC. DBA MDI DIV MOLDED DEVICES (USA)
SPECIFICATIONS
materialPLASTIC POLYVINYL CHLORIDE (PVC)
design_typeFRICTION
special_featuresCOLOR YELLOW
inside_diameter_length1.250 INCHES MAXIMUM IN
round_cap_outside_surface_conditionSMOOTH
material_document_and_classificationAIRESEARCH MFG CO, EMS 53109 MFR REF SINGLE MATERIAL RESPONSE
tube_outside_diameter_for_which_designed3.000 INCHES MAXIMUM IN
NSN5340-01-250-6969
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 640401-1 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: FRICTION
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 3.000 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AIRESEARCH MFG CO, EMS 53109 MFR REF SINGLE MATERIAL RESPONSE
•
MATERIAL: PLASTIC POLYVINYL CHLORIDE (PVC)
•
INSIDE DIAMETER LENGTH: 1.250 INCHES MAXIMUM IN
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED3.000 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAIRESEARCH MFG CO, EMS 53109 MFR REF SINGLE MATERIAL RESPONSE
SPECIAL FEATURESCOLOR YELLOW
MATERIALPLASTIC POLYVINYL CHLORIDE (PVC)
INSIDE DIAMETER LENGTH1.250 INCHES MAXIMUM IN
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 2
10113019Reference document
Same NSN cross-reference
Reference document — Informative reference only
194-506-9003Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 640401-1?
640401-1 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 640401-1?
There are 2 known substitutes for 640401-1: 10113019, 194-506-9003. Substitute compatibility should be verified for your specific system.
What is the NSN for 640401-1?
640401-1 is cataloged in the U.S. Government catalog under NSN 5340-01-250-6969. This indicates validated use in U.S. government and defense supply chains.
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