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280D26 — CLAMP,LOOP

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

280D26: CLAMP,LOOP.

The CLAMP,LOOP is a the manufacturer industrial component. Key specifications include diameter: 0.201 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN, material: PLASTIC TETRAFLUOROETHYLENE CUSHION, overall_width: 0.500 INCHES NOMINAL IN, style_designator: OFFSET MOUNT, tongue_hole_type: ROUND, UNTHREADED, surface_treatment: ANODIZE BAND. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-763-0143, 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
280D26
NSN: 5340-00-763-0143
FSC: 5340 — Hardware, Commercial
CAGE: 18076 — UMPCO, INC. DBA UMPCO INC (USA)
SPECIFICATIONS
diameter0.201 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
materialPLASTIC TETRAFLUOROETHYLENE CUSHION
overall_width0.500 INCHES NOMINAL IN
style_designatorOFFSET MOUNT
tongue_hole_typeROUND, UNTHREADED
surface_treatmentANODIZE BAND
material_thickness0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
loop_inside_diameter1.625 INCHES NOMINAL IN
material_document_and_classificationQQ-A-250/5,T4 FED SPEC SINGLE MATERIAL RESPONSE BAND
distance_from_loop_center_to_tongue_end1.453 INCHES NOMINAL IN
surface_treatment_document_and_classificationMIL-S-8625 TY 2 CL 2 MIL SPEC SINGLE TREATMENT RESPONSE BAND
center_to_center_distance_between_loop_and_mounting_hole1.235 INCHES NOMINAL IN
NSN5340-00-763-0143
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 280D26 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: MIL-S-8625 TY 2 CL 2 MIL SPEC SINGLE TREATMENT RESPONSE BAND
•
STYLE DESIGNATOR: OFFSET MOUNT
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/5,T4 FED SPEC SINGLE MATERIAL RESPONSE BAND
•
DIAMETER: 0.201 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
•
DISTANCE FROM LOOP CENTER TO TONGUE END: 1.453 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE BAND
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-8625 TY 2 CL 2 MIL SPEC SINGLE TREATMENT RESPONSE BAND
STYLE DESIGNATOROFFSET MOUNT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/5,T4 FED SPEC SINGLE MATERIAL RESPONSE BAND
DIAMETER0.201 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
MATERIAL THICKNESS0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
DISTANCE FROM LOOP CENTER TO TONGUE END1.453 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE BAND
TONGUE HOLE TYPEROUND, UNTHREADED
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE1.235 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 6
5340PL0845500Reference document
Same NSN cross-reference
Reference document — Informative reference only
5340PL1971983Reference document
Same NSN cross-reference
Reference document — Informative reference only
C2874D26Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
S280D26Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
477-26Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
JM44LC9D26TSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 280D26?
280D26 is a CLAMP,LOOP.
What parts can replace 280D26?
There are 6 known substitutes for 280D26: 5340PL0845500, 5340PL1971983, C2874D26 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 280D26?
280D26 is cataloged in the U.S. Government catalog under NSN 5340-00-763-0143. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.