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Technical Data Sheet
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TC253 ✓ 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: 0.281 INCHES NOMINAL IN, material: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 BAND, slot_width: 0.281 INCHES NOMINAL IN, slot_length: 0.375 INCHES NOMINAL IN, overall_width: 0.500 INCHES NOMINAL IN, style_designator: SINGLE LOOP. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-282-7519, 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
TC253
NSN: 5340-00-282-7519
FSC: 5340
CAGE: 16460 — MARINE ENGINE SPECIALTIES DIV OF MESCO TECTONICS INC (USA)
SPECIFICATIONS
diameter0.281 INCHES NOMINAL IN
materialSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 BAND
slot_width0.281 INCHES NOMINAL IN
slot_length0.375 INCHES NOMINAL IN
overall_width0.500 INCHES NOMINAL IN
style_designatorSINGLE LOOP
material_thickness0.025 INCHES NOMINAL IN
loop_inside_diameter0.250 INCHES NOMINAL IN
distance_from_loop_center_to_tongue_end0.750 INCHES NOMINAL IN
center_to_center_distance_between_loop_and_mounting_hole0.500 INCHES NOMINAL IN
NSN5340-00-282-7519
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: TC253 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: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 BAND
•
DIAMETER: 0.281 INCHES NOMINAL IN
•
LOOP INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE: 0.500 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.025 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SINGLE LOOP
•
SLOT WIDTH: 0.281 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 BAND
DIAMETER0.281 INCHES NOMINAL IN
LOOP INSIDE DIAMETER0.250 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE0.500 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
MATERIAL THICKNESS0.025 INCHES NOMINAL IN
STYLE DESIGNATORSINGLE LOOP
SLOT WIDTH0.281 INCHES NOMINAL IN
SLOT LENGTH0.375 INCHES NOMINAL IN
DISTANCE FROM LOOP CENTER TO TONGUE END0.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
MX7-182Upgraded Successor
successor cross-reference
successor
105-245Upgraded Successor
successor cross-reference
successor
7-182Upgraded Successor
successor cross-reference
successor
MS21333-27Upgraded Successor
successor cross-reference
successor
NASM21333Upgraded Successor
successor cross-reference
successor
MS21333-10Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TC253?
TC253 is a CLAMP,LOOP.
What parts can replace TC253?
There are 20 known substitutes for TC253: MX7-182, 105-245, 7-182 and 17 more. Substitute compatibility should be verified for your specific system.
Is TC253 still available?
TC253 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