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Technical Data Sheet
PartsTable / COMPONENT / 642AS1641-9
642AS1641-9 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The CLAMP,LOOP is a the manufacturer industrial component. Key specifications include diameter: 0.204 INCHES NOMINAL IN, material: RUBBER CHLOROPRENE CLASS CR CUSHION, overall_width: 0.500 INCHES NOMINAL IN, style_designator: SINGLE LOOP, tongue_hole_type: ROUND, UNTHREADED, material_thickness: 0.050 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-046-5903, 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
642AS1641-9
NSN: 5340-01-046-5903
FSC: 5340
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
diameter0.204 INCHES NOMINAL IN
materialRUBBER CHLOROPRENE CLASS CR CUSHION
overall_width0.500 INCHES NOMINAL IN
style_designatorSINGLE LOOP
tongue_hole_typeROUND, UNTHREADED
material_thickness0.050 INCHES NOMINAL IN
loop_inside_diameter0.563 INCHES NOMINAL IN
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
cushioning_environmental_protectionWEATHER RESISTANT AND OZONE RESISTANT
material_document_and_classificationAMS 3209 ASSN STD SINGLE MATERIAL RESPONSE CUSHION
distance_from_loop_center_to_tongue_end0.970 INCHES NOMINAL IN
center_to_center_distance_between_loop_and_mounting_hole0.752 INCHES NOMINAL IN
NSN5340-01-046-5903
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 642AS1641-9 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
•
STYLE DESIGNATOR: SINGLE LOOP
•
MATERIAL: ALUMINUM ALLOY 2024 BAND
•
DIAMETER: 0.204 INCHES NOMINAL IN
•
DISTANCE FROM LOOP CENTER TO TONGUE END: 0.970 INCHES NOMINAL IN
•
LOOP INSIDE DIAMETER: 0.563 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE: 0.752 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSINGLE LOOP
MATERIALALUMINUM ALLOY 2024 BAND
DIAMETER0.204 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
DISTANCE FROM LOOP CENTER TO TONGUE END0.970 INCHES NOMINAL IN
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
LOOP INSIDE DIAMETER0.563 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE0.752 INCHES NOMINAL IN
CUSHIONING ENVIRONMENTAL PROTECTIONWEATHER RESISTANT AND OZONE RESISTANT
MATERIALRUBBER CHLOROPRENE CLASS CR CUSHION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
AN742D11CUpgraded Successor
successor cross-reference
successor
942R102Upgraded Successor
successor cross-reference
successor
TA1716D11Upgraded Successor
successor cross-reference
successor
MS21919DG9Upgraded Successor
successor cross-reference
successor
5340PL0659801Upgraded Successor
successor cross-reference
successor
2091401-11Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 642AS1641-9?
642AS1641-9 is a CLAMP,LOOP.
What parts can replace 642AS1641-9?
There are 25 known substitutes for 642AS1641-9: AN742D11C, 942R102, TA1716D11 and 22 more. Substitute compatibility should be verified for your specific system.
Is 642AS1641-9 still available?
642AS1641-9 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026