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A78637-1 — PLUG,PROTECTIVE,DUST AND MOISTUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A78637-1: PLUG,PROTECTIVE,DUST AND MOISTUR.

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: STEEL, overall_diameter: 0.562 INCHES NOMINAL IN, special_features: INT THD 0.164-32-3B HD END; 32 MICROIN BODY OD; HDNS RC35-39, features_provided: SHOULDER, surface_treatment: PASSIVATE, material_document_and_classification: AMS 5659 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-360-6550, 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
A78637-1
NSN: 5340-01-360-6550
FSC: 5340 — Hardware, Commercial
CAGE: 9P5N5 — MOOG MILITARY AIRCRAFT LLC (USA)
SPECIFICATIONS
materialSTEEL
overall_diameter0.562 INCHES NOMINAL IN
special_featuresINT THD 0.164-32-3B HD END; 32 MICROIN BODY OD; HDNS RC35-39
features_providedSHOULDER
surface_treatmentPASSIVATE
material_document_and_classificationAMS 5659 ASSN STD SINGLE MATERIAL RESPONSE
NSN5340-01-360-6550
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A78637-1 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
•
OVERALL DIAMETER: 0.562 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5659 ASSN STD SINGLE MATERIAL RESPONSE
•
FEATURES PROVIDED: SHOULDER
•
SURFACE TREATMENT: PASSIVATE
•
TEST DATA DOCUMENT: 94697-EP 2508 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.).
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.562 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5659 ASSN STD SINGLE MATERIAL RESPONSE
FEATURES PROVIDEDSHOULDER
SPECIAL FEATURESINT THD 0.164-32-3B HD END; 32 MICROIN BODY OD; HDNS RC35-39
SURFACE TREATMENTPASSIVATE
TEST DATA DOCUMENT94697-EP 2508 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.).
MATERIALSTEEL
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 A78637-1?
A78637-1 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What is the NSN for A78637-1?
A78637-1 is cataloged in the U.S. Government catalog under NSN 5340-01-360-6550. This indicates validated use in U.S. government and defense supply chains.
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