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Technical Data Sheet
PartsTable / COMPONENT / MS25281-R4
MS25281-R4 ✓ 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: 0.198 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN, material: PLASTIC POLYHEXAMETHYLENE AMIDE CUSHION, overall_width: 0.495 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, style_designator: SINGLE LOOP, tongue_hole_type: ROUND, UNTHREADED, material_thickness: 0.038 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-988-3210, 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
MS25281-R4
NSN: 5340-00-988-3210
FSC: 5340
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
diameter0.198 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
materialPLASTIC POLYHEXAMETHYLENE AMIDE CUSHION
overall_width0.495 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
style_designatorSINGLE LOOP
tongue_hole_typeROUND, UNTHREADED
material_thickness0.038 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
loop_inside_diameter0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
special_test_featuresSPECIAL QUALITY CONTROL TESTING
departure_from_cited_designatorAS MOD BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS
material_document_and_classificationMIL-M-20693 COMP A TY 1 MIL SPEC SINGLE MATERIAL RESPONSE BAND
distance_from_loop_center_to_tongue_end0.725 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN
center_to_center_distance_between_loop_and_mounting_hole0.485 INCHES MINIMUM AND 0.535 INCHES MAXIMUM IN
NSN5340-00-988-3210
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS25281-R4 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
•
DISTANCE FROM LOOP CENTER TO TONGUE END: 0.760 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.060 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SINGLE LOOP
•
MATERIAL: PLASTIC POLYHEXAMETHYLENE AMIDE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.198 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
•
LOOP INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
DISTANCE FROM LOOP CENTER TO TONGUE END0.760 INCHES NOMINAL IN
MATERIAL THICKNESS0.060 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
STYLE DESIGNATORSINGLE LOOP
MATERIALPLASTIC POLYHEXAMETHYLENE AMIDE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.198 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
OVERALL WIDTH0.495 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
LOOP INSIDE DIAMETER0.250 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE0.510 INCHES NOMINAL IN
TONGUE HOLE TYPEROUND, UNTHREADED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
SAE-AS25281Upgraded Successor
successor cross-reference
successor
MS25281R18Upgraded Successor
successor cross-reference
successor
AS23190Upgraded Successor
successor cross-reference
successor
457-6209Upgraded Successor
successor cross-reference
successor
MS25281-F12Upgraded Successor
successor cross-reference
successor
10301187Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS25281-R4?
MS25281-R4 is a CLAMP,LOOP.
What parts can replace MS25281-R4?
There are 29 known substitutes for MS25281-R4: SAE-AS25281, MS25281R18, AS23190 and 26 more. Substitute compatibility should be verified for your specific system.
Is MS25281-R4 still available?
MS25281-R4 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