KSV LOOMS · TECHNICAL GUIDE
Raychem DR-25 is a flexible, non-adhesive heat-shrink tubing used as the outermost layer of a wiring loom. It provides protection against abrasion, heat, fluids and oils, and environmental exposure.
DR-25 Technical Data
- Shrink ratio: 2:1.
- Operating temperature range: -75°C to 150°C (-103°F to 302°F).
- Installation temperatures: minimum shrink temperature of 150°C (302°F); minimum temperature for full recovery of 175°C (347°F).
- Properties: flexible and flame-retardant, with resistance to aviation and diesel fuels, hydraulic fluids, and lubricating oils.
Does DR-25 Have Adhesive?
No. DR-25 is non-adhesive. Its purpose is to provide an outer protective covering for the wiring loom. Although used with other System 25 heat-shrinkable molded shapes and adhesive (RT125 for example) as part of a sealed loom; the tubing itself is not adhesive-lined.
Yellow Label vs. White Label
According to TE Connectivity, these are identical products. The yellow-label version has yellow lettering and is intended for the U.S. market; the white-label version has white lettering and is intended for the U.K. market.
Neither version is technically better. The choice comes down to appearance, availability, and cost.
When Should You Use DR-25?
DR-25 is well suited to concentrically twisted looms, professional builds, and high-end applications where durability is a priority. That does not mean it is the right covering for every loom. If the loom is not concentrically twisted, an alternative such as fiberglass sleeving may be a better choice.
Choosing a Size
TE's guidance is to choose the largest size that will shrink snugly over the component being covered. Before ordering, check both the minimum expanded inside diameter and the maximum recovered inside diameter in the size chart.