Heat Shrink Tubing - National Plastics

Heat shrink tubing is a protective and organizational product widely used in electrical and electronic assemblies. It is designed to slide over wires, cables, and connections, then shrink into place when heated. Once contracted, the tubing forms a tight barrier that shields components from moisture, dust, abrasion, and sharp edges that could otherwise cause shorts or failures.

Along with its protective qualities, heat shrink tubing also serves as an organizational tool. It binds loose wires, terminals, splices, and joints into secure bundles, creating cleaner assemblies that are easier to manage. Color-coded tubing makes wire identification simple, while transparent tubing allows for easy inspection of connections.

At National Plastics and Seals, we supply high-quality custom heat shrink tubing solutions to meet the diverse needs of customers in the food, medical, oil and gas, automotive, military, and other critical industries.

Uses and Benefits

Heat shrink tubing is valued for both its practicality and versatility. It not only protects sensitive electrical components but also makes assemblies easier to manage, repair, and identify.

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Uses

Industries rely on heat shrink tubing for:

Insulating wires and connectors to prevent shorts or failures
Repairing damaged insulation by creating a new protective outer layer
Bundling loose wires into compact, organized harnesses
Providing light mechanical support without adding stiffness to assemblies

At National Plastics and Seals, our heat shrink tubing ranges in size from 3/64-inch to 6-inch inner diameters. We supply 4-foot pieces up to 1,000-foot spools, and we can provide custom heat shrink tubing to customer specifications. Tubing can also be supplied to meet commercial and military specifications.

Benefits

The adaptability of heat shrink tubing makes it one of the most valuable protective products in electrical assembly. Key benefits include:

Long-lasting protection against abrasion, low impacts, and sharp edges
Resistance to water, dust, chemicals, and other contaminants
Ability to organize wires and cables into manageable bundles
A smooth, professional finish for visible applications
Reliable electrical and thermal insulation
Added structural support to reduce strain on wires and connectors
Availability in various colors to support wire identification systems
Maintains performance in a range of temperatures
Resistant to punctures and UV

Applications

Because of its protective and organizational qualities, heat shrink tubing is used across a diverse range of industries. Common applications include:

Electrical insulation.

Protecting wiring, terminals, and splices in control panels and other electrical assemblies.

Strain relief.

Relieving stress on cables and wires at connection points, preventing damage from pulling or bending.

Environmental sealing.

Shielding outdoor or industrial equipment from moisture, dust, and debris.

Bundling wires.

Organizing complex bundles into more manageable bundles.

Field repairs.

Restoring damaged wire jackets or replacing temporary fixes like electrical tape.

Heat Shrink Tubing by National Plastics

At National Plastics and Seals, we specialize in supplying high-quality heat shrink tubing that protects, organizes, and enhances wiring assemblies. Whether you need standard sizes, large spools, or custom heat shrink tubing to meet your unique requirements, our team can provide the right solution.