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LL-HQ5-9138 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

LL-HQ5-9138: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: STEEL COMP 303, design_type: FRICTION, overall_diameter: 0.490 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN, surface_treatment: PASSIVATE, special_test_features: SPECIAL QUALITY CONTROL TESTING, inside_diameter_length: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-286-6248, 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
LL-HQ5-9138
NSN: 5340-01-286-6248
FSC: 5340 — Hardware, Commercial
CAGE: 14153 — DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA (USA)
SPECIFICATIONS
materialSTEEL COMP 303
design_typeFRICTION
overall_diameter0.490 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
surface_treatmentPASSIVATE
special_test_featuresSPECIAL QUALITY CONTROL TESTING
inside_diameter_length0.250 INCHES NOMINAL IN
departure_from_cited_documentAS MODIFIED BY PACKING AND PACKING-VISUAL INSPECTION
criticality_code_justificationZZZY
round_cap_outside_surface_conditionKNURLED
material_document_and_classificationASTM A581, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE
tube_outside_diameter_for_which_designed0.177 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
surface_treatment_document_and_classificationCAGE 94271, WESTON CONTROLS, MI5-28 MFR REF SINGLE TREATMENT RESPONSE
NSN5340-01-286-6248
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: LL-HQ5-9138 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: CAGE 94271, WESTON CONTROLS, MI5-28 MFR REF SINGLE TREATMENT RESPONSE
•
DESIGN TYPE: FRICTION
•
OVERALL DIAMETER: 0.490 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.177 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
•
SPECIAL TEST FEATURES: SPECIAL QUALITY CONTROL TESTING
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A581, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY PACKING AND PACKING-VISUAL INSPECTION
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONCAGE 94271, WESTON CONTROLS, MI5-28 MFR REF SINGLE TREATMENT RESPONSE
DESIGN TYPEFRICTION
OVERALL DIAMETER0.490 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.177 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
SPECIAL TEST FEATURESSPECIAL QUALITY CONTROL TESTING
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A581, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY PACKING AND PACKING-VISUAL INSPECTION
SURFACE TREATMENTPASSIVATE
TEST DATA DOCUMENT81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
SUBSTITUTES & CROSS-REFERENCES 1
129302-1Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 LL-HQ5-9138?
LL-HQ5-9138 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace LL-HQ5-9138?
There is 1 known substitute for LL-HQ5-9138: 129302-1. Substitute compatibility should be verified for your specific system.
What is the NSN for LL-HQ5-9138?
LL-HQ5-9138 is cataloged in the U.S. Government catalog under NSN 5340-01-286-6248. This indicates validated use in U.S. government and defense supply chains.
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