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639AS953 — STRAP,RETAINING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

639AS953: STRAP,RETAINING.

The STRAP,RETAINING is a the manufacturer industrial component. Key specifications include cushion: INCLUDED, material: PLASTIC CROSS-LINKED POLYOLEFIN CUSHIONING, mounting_pad: NOT INCLUDED, overall_width: 0.375 INCHES NOMINAL IN, overall_length: 2.440 INCHES NOMINAL IN, style_designator: TAPERED ARCH. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-047-8303, 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
639AS953
NSN: 5340-01-047-8303
FSC: 5340 — Hardware, Commercial
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
cushionINCLUDED
materialPLASTIC CROSS-LINKED POLYOLEFIN CUSHIONING
mounting_padNOT INCLUDED
overall_width0.375 INCHES NOMINAL IN
overall_length2.440 INCHES NOMINAL IN
style_designatorTAPERED ARCH
surface_treatmentCADMIUM AND CHROMATE
material_thickness0.0064 INCHES MINIMUM AND 0.0076 INCHES MAXIMUM IN
mounting_hole_size0.143 INCHES MINIMUM AND 0.148 INCHES MAXIMUM IN
inside_diameter/arch_length1.650 INCHES NOMINAL IN
material_document_and_classificationMIL-I-23053/5 CL 1 MIL SPEC SINGLE MATERIAL RESPONSE CUSHIONING
distance_between_mounting_hole_centers2.065 INCHES NOMINAL IN
NSN5340-01-047-8303
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 639AS953 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
•
MOUNTING HOLE SIZE: 0.143 INCHES MINIMUM AND 0.148 INCHES MAXIMUM IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 2.065 INCHES NOMINAL IN
•
MOUNTING PAD: NOT INCLUDED
•
STYLE DESIGNATOR: TAPERED ARCH
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-I-23053/5 CL 1 MIL SPEC SINGLE MATERIAL RESPONSE CUSHIONING
•
MATERIAL THICKNESS: 0.0064 INCHES MINIMUM AND 0.0076 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE SIZE0.143 INCHES MINIMUM AND 0.148 INCHES MAXIMUM IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS2.065 INCHES NOMINAL IN
MOUNTING PADNOT INCLUDED
STYLE DESIGNATORTAPERED ARCH
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-I-23053/5 CL 1 MIL SPEC SINGLE MATERIAL RESPONSE CUSHIONING
OVERALL LENGTH2.440 INCHES NOMINAL IN
OVERALL WIDTH0.375 INCHES NOMINAL IN
MATERIAL THICKNESS0.0064 INCHES MINIMUM AND 0.0076 INCHES MAXIMUM IN
CUSHIONINCLUDED
DISTANCE BETWEEN BASE AND INSIDE OF ARCH0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM 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 1
588.10-200016-000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 639AS953?
639AS953 is a STRAP,RETAINING.
What parts can replace 639AS953?
There is 1 known substitute for 639AS953: 588.10-200016-000. Substitute compatibility should be verified for your specific system.
What is the NSN for 639AS953?
639AS953 is cataloged in the U.S. Government catalog under NSN 5340-01-047-8303. This indicates validated use in U.S. government and defense supply chains.
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