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SAE-AS25821 ✓ 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 OVERALL, overall_width: 0.495 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN, special_features: COLOR NATURAL, style_designator: SINGLE LOOP, tongue_hole_type: ROUND, UNTHREADED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-780-8450, 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
SAE-AS25821
NSN: 5340-00-780-8450
FSC: 5340
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
diameter0.198 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
materialPLASTIC POLYHEXAMETHYLENE AMIDE OVERALL
overall_width0.495 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
special_featuresCOLOR NATURAL
style_designatorSINGLE LOOP
tongue_hole_typeROUND, UNTHREADED
material_thickness0.085 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
loop_inside_diameter1.250 INCHES NOMINAL IN
material_document_and_classificationASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_loop_center_to_tongue_end1.351 INCHES NOMINAL IN
center_to_center_distance_between_loop_and_mounting_hole1.066 INCHES NOMINAL IN
NSN5340-00-780-8450
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SAE-AS25821 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
•
MATERIAL: PLASTIC POLYHEXAMETHYLENE AMIDE OVERALL
•
STYLE DESIGNATOR: SINGLE LOOP
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DISTANCE FROM LOOP CENTER TO TONGUE END: 1.257 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE: 0.972 INCHES NOMINAL IN
•
LOOP INSIDE DIAMETER: 1.062 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.050 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYHEXAMETHYLENE AMIDE OVERALL
STYLE DESIGNATORSINGLE LOOP
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SPECIAL FEATURESCOLOR NATURAL
DISTANCE FROM LOOP CENTER TO TONGUE END1.257 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE0.972 INCHES NOMINAL IN
LOOP INSIDE DIAMETER1.062 INCHES NOMINAL IN
MATERIAL THICKNESS0.050 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
TONGUE HOLE TYPEROUND, UNTHREADED
DIAMETER0.198 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
457-6209Upgraded Successor
successor cross-reference
successor
MS25281-F12Upgraded Successor
successor cross-reference
successor
10301187Upgraded Successor
successor cross-reference
successor
MS25281-F16Upgraded Successor
successor cross-reference
successor
SYMZ-70276 ITEM 3Upgraded Successor
successor cross-reference
successor
9M843-28Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SAE-AS25821?
SAE-AS25821 is a CLAMP,LOOP.
What parts can replace SAE-AS25821?
There are 11 known substitutes for SAE-AS25821: 457-6209, MS25281-F12, 10301187 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SAE-AS25821?
SAE-AS25821 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-780-8450. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026