Heat-shrink tubing – Northern Connectors Alpha Wire FIT Heat-Shrink Tubing User Manual
Page 12
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FIT > FIT Heat-Shrink Tubing
Heat-Shrink Tubing
FIT®-321 Heat-Shrink Tubing
3:1 Shrink Ratio, Dual-Wall XLPO, Adhesive Lined
AMS-DTL-23053/4 Class 3
UL 224
CSA 198
• Thicker wall for increased
durability
• Water-resistant inner
permanent-bonding adhesive
Operating Temperature
• -55°C to +125°C
Shrink Temperature
• 110°C min.
• 110°C full recovery
Material
• Dual-wall flexible polyolefin with
thick-wall adhesive
Color
• Black
Physical Properties
• Tensile strength: 1500 psi
(10.34 N/mm
2
)
• Elongation: 250% min
• Longitudinal change: +1%/-15%
• Flame retardant
• Shelf life: 3 years at 18°C to 35°C
Chemical Properties
• Corrosive effect: none
• Fungus resistance: no growth
• Water absorption: 1.0% max
• Fluid resistance: 900 psi
(6.20 N/mm
2
)
• UV resistant
• Lead free
Electrical Properties
• 600 V (UL, CSA)
• Dielectric strength: 300 V/mil
(118 kV/cm)
• Volume resistivity: 10
12
ohm-cm
Availability
See table
Part No.
Supplied ID, Min.
Recovered ID, Max.
Recovered
Wall Thickness, Nom.
Recovered Melt
Wall Thickness, Nom.
Inch
mm
Inch
mm
Inch
mm
Inch
mm
FIT-321-1/8
0.125
3.18
0.024
0.61
0.037
0.94
0.020
0.51
FIT-321-1/4
0.252
6.40
0.073
1.85
0.047
1.19
0.020
0.51
ST-303-3/8
0.374
9.50
0.118
3.00
0.051
1.30
0.025
0.64
FIT-321-1/2
0.500
12.70
0.157
3.99
0.071
1.80
0.030
0.76
ST-303-3/4
0.748
19.00
0.236
5.99
0.071
1.80
0.035
0.89
FIT-321-1
0.945
24.00
0.315
8.00
0.098
2.49
0.040
1.02
FIT-321-1-1/2
1.575
40.01
0.512
13.00
0.098
2.49
0.040
1.02
Packaged Assortments
Assorted sizes of 6”
(15 cm) lengths
Availability
Part No.
Qty, Cut Pieces at Length
4 ft (1.2 m)
6” (152 mm)
FIT-321-1/8
25
28
FIT-321-1/4
25
20
FIT-321-1/2
5
14
FIT-321-1
5
8
FIT-321-1-1/2
5
5
FIT-321-MS-1
Colors: Black
Size
Quantity
Inch
mm
FIT-321-1/8
0.125
3.18
5
FIT-321-1/4
0.252
6.40
5
FIT-321-1/2
0.500
12.70
5
FIT-321-1
0.945
24.00
5