Finding heatshrink tubing in various formatting styles to choose

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Heat shrink tubing in all formats

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Polymer heat shrink guide in temperature order
PVC, Polyolefin, Elastomer, Kynar, Viton, PTFE & 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 | Polyolefin low smoke | Polyolefin Adhesive lined | Elastomer | Kynar | Viton, Silicone Rubber to PTFE, the higher the temperature equals higher the costs for that particular polymer for heat shrink tubing.

We offer a Silicone Rubber heatshrink 1.7:1, a 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

heat shrink tubing

Which heat shrink tubing for temperature

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.

2:1 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

2:1 Elastomer, -75C to +150C
Oil & Diesel resistant, flexible, medium wall

2:1 Kynar, -55C to +175C
Mechanical strength, high chemical & puncture resistance.

2:1 Viton, -55C to +200C
Viton, chemical resistant, oil & diesel resistant. Viton practically covers all areas, that's why its expensive.

2:1 Viton plus, -55C to +220C
Viton plus with extra 10% operating temperature moves into PTFE range with very best flexibility.

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

Silicone Rubber, 1:7:1, -75C to +250C
Extremely flexible in design,highly flame retardant, good chemical and solvent resistance, ability to withstand exposure to sterilisation applications. Halogen free, low smoke - LSZH.

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

Difficulty finding the correct heatshrink

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 and 3:1 Polyolefin heat shrink tubing

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 heat shrink tubing

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 Heat Shrink Tubing

LSZH Polyolefin have 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 heat shrink, -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 heat shrink, -75 to +150C

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

2:1 Kynar (PVdF) heat shrink tubing

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

2:1 Viton heat shrink tubing

Viton, Co-polymer of Vinylidene and 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 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

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