MATERIALS, ADHESIVES AND COATINGS
TPF / TPMA / MRA heat-shrink tubes and sleeves
Country: Spain · Model: TPF / TPMA / MRA
The heat-shrink tubes TPF and TPMA and the sleeve MRA insulate, seal and mechanically protect cable joints, lugs and branches. TPMA is made with diameter designations from 12 to 140 mm. They are used for 0.4 kV cables, panels and conductor marking.
- TPF
- thin-wall universal tube, various colours
- TPMA
- medium wall with adhesive layer, watertight seal, for LV
- TPMA range (by designations)
- 12–140 mm
- MRA
- heat-shrink wrap-around sleeve with adhesive and a stainless steel closure for LV cable branches
Technical specifications
| TPF | thin-wall universal tube, various colours |
|---|---|
| TPMA | medium wall with adhesive layer, watertight seal, for LV |
| TPMA range (by designations) | 12–140 mm |
| MRA | heat-shrink wrap-around sleeve with adhesive and a stainless steel closure for LV cable branches |
| TPMA, MRA fire resistance | not fire-resistant, not self-extinguishing |
| Purpose | insulation, sealing, mechanical protection, marking |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The cross-linked polymer returns to its smaller original shape after heating, so the tube or sleeve is slipped over the joint and heated with an industrial heat gun or a torch. In versions with an adhesive layer the adhesive melts and fills the gaps, forming a watertight seal. TPF is a thin-wall universal tube, and its colours make marking and organizing wires easier. TPMA, with a medium wall and internal adhesive, is watertight, resistant to abrasion and impacts, and intended for low-voltage applications. MRA is a heat-shrink wrap with adhesive and a stainless steel closure, applied over the branch of an LV cable without cutting the main. TPMA and MRA are not fire-resistant and not self-extinguishing, which matters for premises with fire safety requirements. For copper lugs, the tube seals the inspection hole and the gap to the insulation if installation is outdoors or the environment is damp.
How to choose
TPF is taken for insulation and colour marking of wires, TPMA for sealed LV joints with a diameter from 12 to 140 mm, and MRA for a branch without cutting the main. The diameter before shrinking must pass freely over the joint, and after shrinking it must fit tightly around it. For premises with fire safety requirements another material is needed, because these products are not fire-resistant.
Request a price and lead time
TPF / TPMA / MRA heat-shrink tubes and sleeves. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Are the TPMA tubes and MRA sleeves fire-resistant?
No, TPMA and MRA are not fire-resistant or self-extinguishing, so they should be selected with care for premises with fire safety requirements.
How is the MRA sleeve applied without cutting the cable?
MRA is a wrap with adhesive and a stainless steel closure, applied at the branch point of an LV cable.
What is used to heat a heat-shrink tube?
An industrial heat gun or a torch, after which the tube shrinks tightly around the item, and in versions with an adhesive layer the adhesive fills the gaps.
What diameters do the TPMA tubes have?
The sizes are designated by diameters from 12 to 140 mm.
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Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.