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Heat Shrink Tubing
ETW-803/4 Environmental Protection Sleeve
Data Sheet
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Electrical Markets Division
3M United Kingdom PLC 3M Ireland 3M United Kingdom PLC
Sales Office Sales Office Head Office
PO Box 393 3M House, Adelphi Centre, Upper Georges Street 3M Centre, Cain Road
Bedford MK41 0YE Dun Laoghaire, Co Dublin, Ireland Bracknell, Berkshire RG12 8HT
Telephone: 01234 229462 Telephone: 353 1 280 3555 Telephone: 01344 858000
Fax: 01234 229433 Fax: 353 1 280 3509 Fax: 01344 858758
Product Description
ETW-803 is a flexible heat shrinkable tubing with a co-extruded hot melt adhesive inner wall. The excellent flow
properties of the adhesive ensure good environmental sealing of complex parts. As this tubing shrinks, molten adhesive
flows and is forced into gaps and crevices. When the adhesive cools it forms a seal against moisture and other fluids whilst
the outer wall provides mechanical protection. ETW-803 is well suited for environmental sealing of a variety of electronic,
electrical and mechanical applications such as connections, joints etc. ETW-804 with a shrink ratio of 4 : 1 accommodates
wide variances in diameter.
Technical Features
Continuous operating
temperature range:
-55°C to +110°C Shrink ratio: 3 : 1 (ETW-803)
4 : 1 (ETW-804)
Base material: Polyolefin with hot melt adhesive Shrink temperature: 120°C (min.)
Flammability: Self extinguishing outer wall Longitudinal change: -10% max.
Tensile strength: 14 N/mm2 Dielectric strength: 150 kV/cm
Specifications: MIL-I-23053/4 Class 3
Ordering Information Type ETW-803
Bore as supplied
minimum (mm)
Bore recovered
maximum (mm)
Wall thickness
fully recovered
total wall (mm)
Wall thickness
fully recovered
meltable wall
(mm)
Standard pack
reel (m) Standard colour
3.0 1.0 1.0 0.5 400
6.0 2.0 1.0 0.5 300
9.0 3.0 1.4 0.6 150
12.0 4.0 1.8 0.8 100
19.0 6.0 2.2 0.8 50
24.0 8.0 2.5 1.0 25
40.0 13.0 2.5 1.0 25
Black
Ordering Information Type ETW-804
Bore as supplied
minimum (mm)
Bore recovered
maximum (mm)
Wall thickness
fully recovered
total wall (mm)
Wall thickness
fully recovered
meltable wall
(mm)
Standard pack
reel (m) Standard colour
4.0 1.0 1.0 0.5 300
8.0 2.0 1.0 0.5 150
12.0 3.0 1.4 0.6 100
16.0 4.0 1.8 0.8 100
24.0 6.0 2.2 0.8 50
32.0 8.0 2.5 1.0 25
Black
Important Notice
Technical information provided by 3M is based on experience and/or tests believed to be reliable, but their accuracy is not guaranteed and the results may not be relevant to
every user’s application. For this reason 3M does not accept responsibility or liability, direct or consequential, arising from reliance upon any information provided and the user
should determine the suitability of the products for their intended use. Nothing in this statement will be deemed to exclude or restrict 3M’s liability for death or personal injury
arising from its negligence. All questions of liability relating to 3M products are governed by the seller’s terms of sale subject where applicable to the prevailing law. If any
goods supplied or processed by or on behalf of 3M prove on inspection to be defective in material or workmanship, 3M will (at its option) replace the same or refund to the
Buyer the price paid for the goods or services. Except as set out above, all warranties and conditions, whether express or implied, statutory or otherwise are excluded to the
fullest extent permissible at law. 3M is a trademark of the 3M Company. Printed in the UK. © 3M United Kingdom PLC, 2004.
