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Dual-Wall Tubings

Dunbar Dual-Wall Tubings are semi-rigid or flexible, high-shrink-ratio, flame-retardant, and heat-shrinkable polyolefin tubes. These tubings come with an adhesive lining that forms an environmental seal that helps protect against moisture. The dual-wall tubing offers excellent electrical properties and high resistance to abrasion, chemicals, and oils. These dual-wall tubings are UL VW-1 (Jacket only) flammable and comply with RoHS and REACH. The dual-wall tubings can be used to seal and protect a wide variety of electrical applications, including wire splices, breakouts, and connectors-to-cable transitions.

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Part #

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1-1/2in Red 4ft SAE AS23053/4-305-2, QPL listed

3635W-1-1/2-RED-4FT
Dunbar
1: $43.89
25In Stock
New At Mouser

Mfr. Part #
3635W-1-1/2-RED-4FT

Mouser Part #
15-3635W-1-12-RED4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1-1/2in Red 4ft SAE AS23053/4-305-2, QPL listed

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Datasheet

25In Stock

$43.89

$36.14

$30.57

$30.23

$30.21

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 4:1 Polyolefin Dual Wall (adhesive lined), 1-1/4in (32mm) Black 4ft

4635WT-1-1/4(32MM)-BLACK-4FT
Dunbar
1: $37.66
1In Stock
39Expected 2026-09-04
New At Mouser

Mfr. Part #
4635WT-1-1/4(32MM)-BLACK-4FT

Mouser Part #
15-4635WT11432MMBLK4

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 4:1 Polyolefin Dual Wall (adhesive lined), 1-1/4in (32mm) Black 4ft

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Datasheet

1In Stock

39Expected 2026-09-04

$37.66

$31.00

$26.22

$25.93

$25.92

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1in Red 4ft

DC-321A-1-RED-4FT
Dunbar
1: $13.46
100In Stock
New At Mouser

Mfr. Part #
DC-321A-1-RED-4FT

Mouser Part #
15-DC-321A-1-RED-4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1in Red 4ft

Learn More

Datasheet

100In Stock

$13.46

$11.09

$10.20

$8.52

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Black 4ft

DC-321A-1/2-BLACK-4FT
Dunbar
1: $4.25
123In Stock
77Expected 2026-09-04
New At Mouser

Mfr. Part #
DC-321A-1/2-BLACK-4FT

Mouser Part #
15-DC321A12BLACK-4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Black 4ft

Learn More

Datasheet

123In Stock

77Expected 2026-09-04

$4.25

$3.50

$2.95

$2.65

$2.43

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Yellow 4ft

DC-321A-1/2-YELLOW-4FT
Dunbar
1: $7.19
100In Stock
New At Mouser

Mfr. Part #
DC-321A-1/2-YELLOW-4FT

Mouser Part #
15-DC321A12YELLOW4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Yellow 4ft

Learn More

Datasheet

100In Stock

$7.19

$5.92

$5.44

$4.38

$4.18

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in Black 250ft spool

DC-321A-1/4-BLACK-250FT
Dunbar
250: $0.472
1,250In Stock
New At Mouser

Mfr. Part #
DC-321A-1/4-BLACK-250FT

Mouser Part #
15-DC321A14BLACK250F

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in Black 250ft spool

Learn More

Datasheet

1,250In Stock

$0.472

$0.446

Min.: 250
Mult.: 250

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/8in Yellow 4ft

DC-321A-1/8-YELLOW-4FT
Dunbar
1: $2.58
500In Stock
New At Mouser

Mfr. Part #
DC-321A-1/8-YELLOW-4FT

Mouser Part #
15-DC321A18YELLOW4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/8in Yellow 4ft

Learn More

Datasheet

500In Stock

$2.58

$2.13

$1.80

$1.57

View

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/8in Black 4ft

DC-321A-3/8-BLACK-4FT
Dunbar
1: $3.76
250In Stock
New At Mouser

Mfr. Part #
DC-321A-3/8-BLACK-4FT

Mouser Part #
15-DC321A38BLACK-4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/8in Black 4ft

Learn More

Datasheet

250In Stock

$3.76

$3.10

$2.62

$2.35

View

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in Black 4ft SAE AS23053/4-302-0, QPL listed

3635W-1/4-BLACK-4FT
Dunbar
1: $9.29
245In Stock
New At Mouser

Mfr. Part #
3635W-1/4-BLACK-4FT

Mouser Part #
15-3635W-14-BLACK4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in Black 4ft SAE AS23053/4-302-0, QPL listed

Learn More

Datasheet

245In Stock

$9.29

$7.63

$7.03

$5.79

$5.66

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/8in Black 4ft SAE AS23053/4 Non Mil-Spec Diameter

3635W-3/8-BLACK-4FT
Dunbar
1: $13.13
250In Stock
New At Mouser

Mfr. Part #
3635W-3/8-BLACK-4FT

Mouser Part #
15-3635W-38-BLACK4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/8in Black 4ft SAE AS23053/4 Non Mil-Spec Diameter

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Datasheet

250In Stock

$13.13

$10.80

$9.94

$8.18

$8.01

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Red 4ft

DC-321A-1/2-RED-4FT
Dunbar
1: $7.19
100In Stock
New At Mouser

Mfr. Part #
DC-321A-1/2-RED-4FT

Mouser Part #
15-DC-321A-12-RED4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Red 4ft

Learn More

Datasheet

100In Stock

$7.19

$5.92

$5.44

$4.38

$4.18

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 4:1 Polyolefin Dual Wall (adhesive lined), 1/2in (12mm) Black 4ft

4635WT-1/2(12MM)-BLACK-4FT
Dunbar
1: $17.18
100In Stock
New At Mouser

Mfr. Part #
4635WT-1/2(12MM)-BLACK-4FT

Mouser Part #
15-4635WT1212MMBLK4F

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 4:1 Polyolefin Dual Wall (adhesive lined), 1/2in (12mm) Black 4ft

Learn More

Datasheet

100In Stock

$17.18

$14.16

$13.02

$11.26

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1in White 4ft

DC-321A-1-WHITE-4FT
Dunbar
1: $13.46
100In Stock
New At Mouser

Mfr. Part #
DC-321A-1-WHITE-4FT

Mouser Part #
15-DC-321A-1WHITE4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1in White 4ft

Learn More

Datasheet

100In Stock

$13.46

$11.09

$10.20

$8.52

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/16in Clear 4ft

DC-321A-3/16-CLEAR-4FT
Dunbar
1: $2.85
750In Stock
New At Mouser

Mfr. Part #
DC-321A-3/16-CLEAR-4FT

Mouser Part #
15-DC321A316CLEAR4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/16in Clear 4ft

Learn More

Datasheet

750In Stock

$2.85

$2.35

$1.97

$1.73

View

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Black 4ft M25053/4-303-0, QPL listed

3635W-1/2-BLACK-4FT
Dunbar
1: $15.62
1In Stock
99Expected 2026-09-04
New At Mouser

Mfr. Part #
3635W-1/2-BLACK-4FT

Mouser Part #
15-3635W-12-BLACK4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Black 4ft M25053/4-303-0, QPL listed

Learn More

Datasheet

1In Stock

99Expected 2026-09-04

$15.62

$12.87

$11.84

$9.89

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Clear 4ft

3635W-1/2-CLEAR-4FT
Dunbar
1: $16.66
50In Stock
New At Mouser

Mfr. Part #
3635W-1/2-CLEAR-4FT

Mouser Part #
15-3635W-12-CLEAR4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Clear 4ft

Learn More

Datasheet

50In Stock

$16.66

$13.72

$12.61

$10.92

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Semi-Rigid 4:1 Polyolefin Dual Wall (adhesive lined), No.2-8mm Black 250ft spool

4635WS-NO.2-8MM-BLACK-250FT
Dunbar
250: $1.60
500In Stock
New At Mouser

Mfr. Part #
4635WS-NO.2-8MM-BLACK-250FT

Mouser Part #
15-4635WSNO28MMBL250

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Semi-Rigid 4:1 Polyolefin Dual Wall (adhesive lined), No.2-8mm Black 250ft spool

Learn More

Datasheet

500In Stock

$1.60

Min.: 250
Mult.: 250

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/8in Red 4ft

DC-321A-1/8-RED-4FT
Dunbar
1: $2.58
500In Stock
New At Mouser

Mfr. Part #
DC-321A-1/8-RED-4FT

Mouser Part #
15-DC-321A-18-RED4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/8in Red 4ft

Learn More

Datasheet

500In Stock

$2.58

$2.13

$1.80

$1.57

View

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Clear 100ft spool

DC-321A-1/2-CLEAR-100FT
Dunbar
100: $1.64
400In Stock
New At Mouser

Mfr. Part #
DC-321A-1/2-CLEAR-100FT

Mouser Part #
15-DC321A12CLEAR100F

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/2in Clear 100ft spool

Learn More

Datasheet

400In Stock

$1.64

$1.61

Min.: 100
Mult.: 100

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in Clear 4ft

DC-321A-1/4-CLEAR-4FT
Dunbar
1: $3.02
500In Stock
New At Mouser

Mfr. Part #
DC-321A-1/4-CLEAR-4FT

Mouser Part #
15-DC321A14CLEAR-4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in Clear 4ft

Learn More

Datasheet

500In Stock

$3.02

$2.49

$2.10

$1.89

View

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in Clear 250ft spool

DC-321A-1/4-CLEAR-250FT
Dunbar
250: $0.76
1,250In Stock
New At Mouser

Mfr. Part #
DC-321A-1/4-CLEAR-250FT

Mouser Part #
15-DC321A14CLEAR250F

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in Clear 250ft spool

Learn More

Datasheet

1,250In Stock

$0.76

Min.: 250
Mult.: 250

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in White 250ft spool

DC-321A-1/4-WHITE-250FT
Dunbar
250: $0.76
1,250In Stock
New At Mouser

Mfr. Part #
DC-321A-1/4-WHITE-250FT

Mouser Part #
15-DC321A14WHITE250F

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 1/4in White 250ft spool

Learn More

Datasheet

1,250In Stock

$0.76

Min.: 250
Mult.: 250

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Semi-Rigid 4:1 Polyolefin Dual Wall (adhesive lined), No.1-6mm Black 500ft spool

4635WS-NO.1-6MM-BLACK-500FT
Dunbar
500: $1.33
1,000In Stock
New At Mouser

Mfr. Part #
4635WS-NO.1-6MM-BLACK-500FT

Mouser Part #
15-4635WSNO16MMBL500

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Semi-Rigid 4:1 Polyolefin Dual Wall (adhesive lined), No.1-6mm Black 500ft spool

Learn More

Datasheet

1,000In Stock

$1.33

Min.: 500
Mult.: 500

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/16in White 4ft

DC-321A-3/16-WHITE-4FT
Dunbar
1: $2.85
750In Stock
New At Mouser

Mfr. Part #
DC-321A-3/16-WHITE-4FT

Mouser Part #
15-DC321A316WHITE4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/16in White 4ft

Learn More

Datasheet

750In Stock

$2.85

$2.35

$1.97

$1.73

View

Min.: 1
Mult.: 1

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/4in Black 4ft

DC-321A-3/4-BLACK-4FT
Dunbar
1: $7.52
2In Stock
98Expected 2026-09-04
New At Mouser

Mfr. Part #
DC-321A-3/4-BLACK-4FT

Mouser Part #
15-DC321A34BLACK-4FT

New At Mouser

Dunbar

Heat Shrink Tubing & Sleeves Heat Shrink Tubing, Flexible 3:1 Polyolefin Dual Wall (adhesive lined), 3/4in Black 4ft

Learn More

Datasheet

2In Stock

98Expected 2026-09-04

$7.52

$6.19

$5.69

$4.58

$4.36

Min.: 1
Mult.: 1

Dual-Wall Tubings

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Dual-Wall Tubings

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