3M 7100084393 NST-1 Modified Polychloroprene Tubing 3/4 in Black

Product Description

The 3M 7100084393 is a modified polychloroprene heat shrink tubing sold under the NST-1 designation, designed for applications requiring a tough, highly flexible protective covering. This tubing delivers superior cut-through and abrasion resistance and resists common fluids, solvents, and oils. It is rated for continuous operation from -94 degrees F to 250 degrees F, and when heated above 275 degrees F it shrinks rapidly to a skintight fit. Electrical contractors and industrial maintenance technicians install this tubing to protect wire bundles, cable harnesses, and component leads in demanding environments.

This tubing is well suited for both indoor and outdoor applications where mechanical protection and fluid resistance are priorities. Its ability to maintain flexibility at low temperatures makes it appropriate for cold-environment installations such as refrigeration wiring, outdoor electrical enclosures, and HVAC equipment wiring. The tubing accepts marking by hot-stamp and print-wheel methods, which supports circuit identification and labeling requirements common in commercial and industrial electrical work. This SKU provides 50 feet per spool.

Key Features

• Modified polychloroprene construction provides superior cut-through and abrasion resistance
• Unaffected by common fluids, solvents, and oils
• Maintains flexibility at low temperatures down to -94 degrees F
• Continuous operating range: -94 degrees F to 250 degrees F
• Shrinks to skintight fit when heated above 275 degrees F
• Compatible with hot-stamp and print-wheel marking methods for circuit identification

Compatibility

Designed as a general-purpose heat shrink sleeving for wire bundle protection, cable harnessing, and component insulation in electrical, HVAC, and industrial maintenance applications.

Installation Notes

This tubing is typically installed by licensed electricians or qualified technicians working on wire harnesses or cable assemblies. De-energize all circuits before applying the tubing. Use a calibrated heat gun to apply even heat and achieve a uniform skintight shrink. Follow applicable NEC guidelines and equipment manufacturer requirements for conductor insulation and bundling.

Technical Specifications

• Material: Modified Polychloroprene
• Color: Black
• Inner Diameter: 3/4 inch
• Length: 50 feet per spool
• Continuous Operating Temperature: -94 degrees F to 250 degrees F
• Shrink Activation Temperature: Above 275 degrees F
• Weight: 0.21 pounds
• UPC: 00054007586067

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100084393