Panduit HSTT25-YK1 Heat Shrink Tubing 0.25 Inches

Product Description

The PANDUIT HSTT25-YK1 is a thin-wall heat shrink tubing sold as a single unit, designed for insulating, bundling, and protecting wire terminations and electrical connections. With a nominal diameter of 0.25 inches (6.4 mm), it fits standard wire and cable sizes commonly encountered in electrical, HVAC control wiring, and panel work. Heat shrink tubing of this type contracts when exposed to controlled heat, forming a tight, protective sleeve over conductors, splices, and terminals. Licensed electricians and HVAC technicians typically use this product when finishing wire harnesses, labeling circuits, or protecting low-voltage control wiring from abrasion and moisture ingress.

This tubing is suited for residential and light commercial applications where a reliable, low-profile insulating sleeve is needed. Common install scenarios include control panel wiring, thermostat and sensor lead terminations, terminal block connections, and wire splice protection. Its thin-wall profile keeps the finished diameter compact, which is useful in tight conduit runs or crowded enclosures where bulkier tubing would be impractical.

Key Features

• Nominal diameter of 0.25 inches (6.4 mm) fits a range of standard wire gauges
• Thin-wall construction keeps finished bundle diameter compact
• Provides insulation, abrasion resistance, and moisture protection at wire terminations
• Single-unit (EA) packaging for precise quantity control on service calls
• Suitable for low-voltage control wiring, splices, and terminal insulation

Compatibility

Designed as a general-purpose thin-wall heat shrink sleeve compatible with standard wire and cable terminations requiring a 0.25-inch nominal diameter insulating cover.

Installation Notes

Installation is performed by licensed electricians or qualified HVAC technicians. De-energize all circuits before applying heat shrink tubing to any wiring. Slide the tubing over the conductor or termination before making the final connection, then apply even heat using a calibrated heat gun, working from the center outward to avoid trapping air. Follow applicable NEC requirements for insulation integrity and conductor sizing at the installation point.