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Technical Data Sheet
GC12A18-66 ✓ 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: 0.187 INCHES NOMINAL IN, material: STEEL BAND, overall_width: 0.312 INCHES NOMINAL IN, overall_length: 2.469 INCHES NOMINAL IN, style_designator: CENTER MOUNT, surface_treatment: LACQUER BAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-719-7243, 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
GC12A18-66
NSN: 5340-00-719-7243
FSC: 5340
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
diameter0.187 INCHES NOMINAL IN
materialSTEEL BAND
overall_width0.312 INCHES NOMINAL IN
overall_length2.469 INCHES NOMINAL IN
style_designatorCENTER MOUNT
surface_treatmentLACQUER BAND
material_thickness0.032 INCHES NOMINAL IN
nominal_thread_size0.138 INCHES IN
loop_inside_diameter2.062 INCHES NOMINAL IN
thread_quantity_per_inch32
specification/standard_data17532-GC12 MANUFACTURERS SPECIFICATION
distance_from_loop_center_to_tongue_end0.657 INCHES NOMINAL IN
NSN5340-00-719-7243
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GC12A18-66 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: LACQUER BAND
LOOP INSIDE DIAMETER: 2.062 INCHES NOMINAL IN
MATERIAL THICKNESS: 0.032 INCHES NOMINAL IN
THREAD QUANTITY PER INCH: 32
DISTANCE FROM LOOP CENTER TO TONGUE END: 0.657 INCHES NOMINAL IN
DIAMETER: 0.187 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTLACQUER BAND
OVERALL WIDTH0.312 INCHES NOMINAL IN
LOOP INSIDE DIAMETER2.062 INCHES NOMINAL IN
MATERIAL THICKNESS0.032 INCHES NOMINAL IN
THREAD QUANTITY PER INCH32
OVERALL LENGTH2.469 INCHES NOMINAL IN
DISTANCE FROM LOOP CENTER TO TONGUE END0.657 INCHES NOMINAL IN
DIAMETER0.187 INCHES NOMINAL IN
MATERIALSTEEL BAND
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE0.469 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
15652Interchangeable
interchangeable cross-reference
interchangeable
SB1866Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GC12A18-66?
GC12A18-66 is a CLAMP,LOOP.
What parts can replace GC12A18-66?
There are 2 known substitutes for GC12A18-66: 15652, SB1866. Substitute compatibility should be verified for your specific system.
What is the NSN for GC12A18-66?
GC12A18-66 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-719-7243. This indicates validated use in U.S. government and defense supply chains.
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