Finding heatshrink tubing in various formatting styles to choose

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Heat shrink tubing, heat shrink, heat polyolefin


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guide in temperature order -








Silicone Rubber

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

Heatshrink tubing

Which type of 2:1, 3:1 or 4:1 heat shrink tubing to use, these shrink polymers comes in an varied temperature and forms of flexibility polymers from PVC,


Polyolefin low smoke,

Polyolefin Adhesive lined,




Silicone Rubber




The higher the temperature equals higher the costs for that particular polymer for

heat shrink tubing.

Silicone Rubber heatshrink 1.7:1 special with lead time conditions and set minimums as not a standard issue, so if looking for any of these polymers please get in touch for

heatshrink tubing

Which heat shrink tubing for temperature

2:1 Layflat PVC, -20C to +85C.
2:1 PVC -30C to +105C
Polyolefin, 3:1 & 4:1 Adhesive lined, -55C to +110C
2:1 Polyolefin, -55C to +135C
2:1 Low Smoke - LSOH, -55C to +125C
2:1 Elastomer, -75C to +150C
2:1 Kynar, -55C to +175C
2:1 Viton, -55C to +200C
2:1 Viton plus, -55C to +220C
2:1 & 4:1 PTFE, -70C to +260C
Silicone Rubber, 1:7:1, -75C to +250C

Heat shrink tubing, choosing the correct size

Example: A substrate to be insulated is OD 6mm at temperatures of +200C, then you need the size up ID 9.5mm. A good guide if your need is for abrasion protection but with oil and diesel protection then consider Elastomer at +150C over Viton at +200C, as Viton is a premium heatshrink, consider your options wisely.

Heat shrink tubing - Cutting best guide

The best guide when cutting these polymers to the desired length is to take special care to ensure smoothly cut ends with sharp cutting equipment as poorly cut edges can cause the material to split during heat shrinking process. As a extra guide think twice measure length before you cut the

heat shrink tubing

Polyolefin 3:1 heat shrink tubing, also looks like EDW1 adhesive lined but without the inner adhesiveWhen heat shrinking, best guide is 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.

Heat shrink tubing - for longitudinal shrinkage

Heat shrink will also shrink longitudinally (horizontally), you could be looking at shrinkage from +/-5% to +/-15% this has to be considered when cutting. By heat shrinking the ends first then the middle section, using this method is problematic as air gets trapped in the tubing and prevents the middle section from fully shrinking.

Heat shrink tubing for insulating metal pipes

If the object to be covered is metal hollow pipes, it is best taking care to ensure the metal is pre-heated to avoid cold spots as this will give an unsightly appearance of the

heat shrink tubing

Difficulty finding the correct


If you are still struggling to find a suitable "heatshrink" for your application, contact us as we should be able to offer something less costly to use more successfully on your finished assembly.

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 & 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 LSZH Low Smoke

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

Non Polyolefin Heat shrink tubing in

PVC, Elastomer, Kynar, Viton, PTFE Polymers

2:1 PVC, -30 to +105C

2:1 PVC 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, designed for areas that need protection against abuse at high temperatures.
2:1 Elastomer, 3.2 to 76.2mm

2:1 Kynar (PVdF)

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

2:1 Viton

Co-polymer of Vinylidene & Hexafluoro
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 tubing

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 & 4:1 PTFE

heat shrink tubing

2:1 & 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

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heat shrinkable tubing

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