Heat Shrink Tubing in Polyolefin, PVC, LSOH, Adhesive lined, Kynar, Elastomer, Viton, PTFE sleeving, tubing, conduits & UL3239


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  PTFE Tubing  
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  PTFE Sleeving  
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  PTFE Conduits  
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  PTFE Spiralwrap  
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  UL3239 HV DC  
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  Heat Shrink Tubing  
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  Shrink End Caps  
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  Print Heat Shrink  
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  Shrink Butt Splice  ----------------------
  T: 01706 522 611



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For heat shrink tubing or sleeving, ptfe tubing, sleeving, conduits, spiralwrap & UL3239

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Heat Shrink Tubing, PTFE sleeving,
PTFE Tubing, Spiralwrap, Conduits

Shrinkfit polymers in temperature order to choose
PVC, Polyolefin, Elastomer, Kynar, Viton and PTFE



Which type of 2:1, 3:1 or 4:1 heat shrink tubing to use

Heatshrink tubingHeat shrink tubing comes in various temperatures and forms
of flexibility formats from PVC | Polyolefin | Polyolefin low smoke | Polyolefin Adhesive lined | Elastomer | Kynar | Viton to PTFE, the higher the temperature equals higher the costs for that particular polymer for heat shrink tubing.
We offer a Silicone Rubber 1.7:1 but will be to special lead time conditions and set minimums.

Which heat shrink to use for temperature needs

2:1 Layflat PVC, -20C to +85C.
Semi rigid supplied flattened with an extremely thin wall.

2:1 PVC, -30C to +105C
Semi flexible, great for shrinking down around Low Voltage busbars

Polyolefin, 3:1 and 4:1 Adhesive lined, -55 to +110C
Thin wall, inner adhesive lining provides excellent moisture environmental sealing.

Polyolefin, -55C to +135C
Thin wall, flame retardant & non flame retardant

2:1 Low Smoke LSOH, -55C to +125C
No halogens present in low smoke LSOH - LSZH

Elastomer Heat Shrink Tubing, -75C to +150C
Oil & Diesel resistant, flexible, medium wall

Kynar, -55C to +175C
Mechanical strength, high chemical & puncture resistance.

Viton Heat Shrink Tubing, -55C to +200C
Viton, chemical resistant, oil & diesel resistant. Viton practically covers all areas, that's why its expensive.

Viton-plus, -55C to +220C
As Viton but with added 10% temperature operating.

PTFE, -70C to +260C
UV resistant, non stick properties, protection of harmful moisture damage.

Silicone (Silicon) Rubber, 1:7:1, -75C to +250C
Extremely flexible in design, highly flame retardant, good chemical and solvent resistance, ability to withstand exposure to sterilization applications.

Choosing the correct Heat Shrink tubing size

Example: If the substrate to be insulated is OD 6mm
at temperatures of +200C, then using either a Viton
or PTFE material fits the bill for your needs. Alternatively, if your need is for abuse protection but with oil and diesel protection then consider Elastomer at +150C over Viton at +200C, as Viton is a very expensive material to purchase, even if your ID size is considerably over 25.4mm as the higher the size, temperature and material, so increases the costings for that polymer material. Consider your options wisely, always enquire before purchasing your tubing.

Cutting the Heat Shrink Tubing

When cutting these polymers to the desired length, special care has to be taken to ensure smoothly cut ends with sharp cutting equipment as poorly cut edges can cause the material to split during heat shrinking.

Polyolefin 3:1 heat shrink tubing, also looks like EDW1 adhesive lined but without the inner adhesiveWhen heat shrinking, it
is advisable to always start
from the middle working outwards so the polymer
grips the area to avoid slipping and gradually
proceed to one end and then from the middle again to the opposite end, which avoids air being trapped under the tubing and by starting from the middle stops the polymer from slipping along the object being insulated.

Beware of Longitudinal shrinkage in Heat shrink

Beware, these heatshrinks will also shrink longitudinally
(horizontally), you could be looking at shrinkage from +/-5% to +/-15% this has to be considered when cutting.

Minimise Heat Shrink Tubing Longitudinal Shrinkage

By shrinking the ends first and then the middle section,
using this method has problems as air gets trapped and prevents the middle section from fully shrinking.

Heat shrink tubing for insulating metal substrates

If the object to be covered is Metal or Conductive, care must be taken to ensure the metal is pre-heated to avoid cold spots as this will give an unsightly appearance of the tube.

If after going through all this, you are still struggling to find
a suitable heat srink for your application, contact us as we just might be able to offer something less costly to use more successfully.

  Heat Shrink Tubing Cross Reference  

2:1 & 3:1 Polyolefin

Polyolefin, flexible, thin wall, flame retardant
operates at -55 to +135C.
2:1 and 3:1 Polyolefin (2:1 EMS2, 1.2 to 152mm)
(3:1 EMS3, 1.5/0.5 to 40/13mm)

3:1 and 4:1 Adhesive (Glue) lined

Polyolefin tube, with dual wall inner adhesive
(glue) lining, flexible and in a thin wall.
3:1 and 4:1 Adhesive lined 3 to 52mm

2:1 LS0H Low Smoke Shrink Tubing

LSZH Polyolefin have no added halogens for
LSOH Thin wall & LSZH medium wall.
2:1 LSOH & LSZH, ID 1.2 to 102mm


        Speciality Heat shrink tubing in

PVC, Elastomer, Kynar, Viton, PTFE Polymers

2:1 PVC, -30 to +105C

2:1 General purpose, thin wall, UL is ideal for
electrical busbar distribution centres, handles,
ropes, chain applications.
2:1 PVC - 3.2 to 101.6mm

2:1 Elastomer, -75 to +150C

2:1 Cross-linked flexible Chlorinated Elastomer
designed for areas that need protection against
abuse at high tempertaures.
2:1 Elastomer, 3.2 to 76.2mm

2:1 Kynar (PVdF)

2:1 Kynar, a super thin wall, tough, chemical
resistant, semi rigid polymer.
2:1 Kynar, 1.2 to 25.4mm

2:1 Viton

Viton, Co-polymer of Vinylidene and Hexa fluoro
propylene, a premium grade, withstands chemical
attack, oil and diesel resistant.
2:1 +200C Viton, 3.2 to 50.8mm

2:1 Viton plus

Heat Shrink Viton + as exactly as previous Viton
but with added temperature of 10% more than
standard Viton. 2:1 +220C Viton +, 3.2 to 50.8mm

2:1 and 4:1 PTFE

2:1 and 4:1 are used in highly critical & extreme
environments due to it being the highest temperature
in all polymers,
2:1 and 4:1 PTFE



Below Non-Shrinkable PTFE to consider



PTFE Polymers NON heat shrink tubing

Consider either a Tubing or Sleeving to BS2848 Type 6
Class 250T, Conduits (PANAVIA 6627, 6628) including
Smooth bore, Crush resistant, Spiralwrap AS41088.

Polytetrafluoroethylenes (PTFE) are different from other known polymer insulated custom profiles, these components continually and successfully operate at very high temperatures which are far better than most polymers around today. They have the best chemical resistance, resistant to acids and resistant to alkalis. We offer a variety of spaghetti tube, sleeve, spiral wrap and convoluted conduits in various types & wall thicknesses.

PTFE Tubing to BS2848 Class 6 250T

High Temp Tubes to -70 to +260C.
AWG 0 to AWG 30

PTFE Sleeving to BS 2848 Part 6 250T

High Temp Sleeves to -70 to +260C.
AWG 0 to AWG 28

AS41088 and PAN6480

Spiralwrap to -70C to +260C

Precision Engineered Spiral Binding

Spiral Binding Precision Engineering -70C to +260C

Convoluted Conduits, -70C to +260C

Smooth Bore and other Convolutions.

Metric Rod and Imperial Rods, -70C to +260C

BS-EN-ISO-13000 Imperial and Metric Rods.

Below High Voltage DC wires

UL3239 and AWM3239 +105C

UL3239 HVDC wires to +105C TV-3, TV-6, TV-10 & TV-20, all to MOQ and to only.



PTFE Sleeving, Spiralwrap, Tubing & Heat shrink tubing
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