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Cold Shrink EPDM Tubes

Connector Insulators 8420 Series

Data Sheet

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Electrical Markets Division

3M United Kingdom PLC

3M Ireland Ltd

3M United Kingdom PLC

Sales Office

Sales Office

Head Office

PO Box 393

The Iveagh Building, The Park,

3M Centre, Cain Road

Bedford MK41 0YE

Carrickmines, Dublin 18, Ireland

Bracknell, Berkshire RG12 8HT

Telephone: 0870 609 4639

Telephone: (01) 800 812 732

Telephone: 01344 858 000

Fax: 01234 229 433

Fax: 353 1 280 3509

Fax: 01344 858 758

PST Selection Table

Min. diameter (mm)

Max. diameter (mm)

Length (mm)

8423-6

7.8

14.3

152

8425-8

10.2

20.8

203

8426-9

13.0

25.4

229

8426-11

13.0

25.4

279

8427-6

17.5

33.0

152

8427-12

17.5

33.0

305

8427-16

17.5

33.0

406

8428-6

24.0

49.3

152

8428-12

24.0

49.3

305

8428-18

24.0

49.3

457

8428-24

24.0

49.3

609

8429-4

32.2

67.8

100

8429-6

32.2

67.8

152

8429-9

32.2

67.8

229

8429-12

32.2

67.8

305

8429-18

32.2

67.8

457

8429-24

32.2

67.8

610

8430-9

42.6

93.7

229

8430-18

42.6

93.7

457

8430-24

42.6

93.7

610

Data: Physical & Electrical Properties

Typical Physical & Electrical Properties

Physical Properties

Test Method

Typical Value

Colour

Black

100% Modulus ASTM D 412

1.17 Mpa

300% Modulus ASTM D 412-75

4.7 Mpa

Ultimate Tensile ASTM D 412-75 Original

11.6 Mpa

Ultimate Elongation ASTM D 412-75 Original

635%

Die C Tear ASTM D 624C-73 Original

38.5KN/m

Fungus Resistance ASTM G-21 28 days exposure

No growth

Shore A Hardness ASTM D 2240-75

48

Permanent Set 3M test method @ 250% strain 5 minute

recovery

RT 8.8% 4.4°C (40°F) 14.6%

Moisture Absorption

24hrs 90°C H2O

7 days 90°C H2O

Wt. Gain

1.3%

3.2%

Electrical Properties

Dielectric Strength ASTM D 149-75 Original @ 1.78mm

19.1 MV/m

7 days in H2O at 90°C

18.1MV/m

Dielectric Constant Original

7 days 90°C H2O

5.0

5.6

Specifications

Product

Splicing of all 1000 volts or less inline power cables from 6mm

2 to 500mm2 shall be done in accordance with the