Material comparison

Fiberglass sleeving vs. heat-shrink tubing.

Both insulate—but they install, move and seal differently.

Choose around assembly behavior.

Fiberglass sleeving slides over a lead and remains flexible; heat-shrink recovers around a substrate and can support strain relief or sealing. Temperature, movement, termination geometry and installation equipment determine the better option.

Specification checklist

Operating and peak temperature
Working voltage and dielectric requirement
Inner diameter, tolerance and wall construction
Movement, abrasion and chemical exposure
Required standards, color, length and quantity

Final values, certification scope, MOQ and lead time must be confirmed against the selected FRT product code.

Engineering support

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