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GMT-421

Single Wall Polyolefin Heat Shrink Tubing

GMT-421 is a high shrink ratio; flame retardant, heat resistant, heat shrinkable polyolefin tube. It has excellent electrical, physical, and chemical properties that meet or exceed industry standards. Conforms well to highly variable substrates. There are no signs of denigration when exposed to solvents, chemicals, and aviation fuels.

  • Ideal for Harness Repair
  • Pass Over Large Dimension, then Shrink Down to Small Size
  • Covers Irregular Shapes & Connectors
  • SHRINK RATIO: 4:1
  • MIL-DT- 23052/5C
  • RoHS
  • E306685
  • Operating Temperature: -55 ° to 135 ° Celsius
  • Shrink Temperature: Start at 70° C; Shrinkage Complete 120° C
  • Shrink Ratio: 4 to 1
  • Colors: Black, other Colors Available Upon Request
  • Resistance to Water, Fungus, UV Light
  • Flammability: Self-Extinguishing
GMT-421 Size & Milspec Guide

Part Number

Size

Standard Color

Length (Spool Size)

Mil-Spec Number

Min Expanded as Supplied

Max Recovered After Heating

Total Wall Thickness After Heating

GMT-421-3/4-(Color)-(SP/4FT)

3/4"

Black

1000 FT

N/A

19.1mm/0.75in

0.13mm/0.1875in

1.00mm/0.039in

GMT-421-1-(Color)-(SP/4FT)

1"

Black

1000 FT

M/23053/5-115

25.4mm/0.1in

6.99mm/0.275in

1.14mm/0.045in

GMT-421-1-1/4-(Color)-(SP/4FT)

1-1/4"

Black

500 FT

N/A

mm/in

mm/in

mm/in

GMT-421-1-1/2-(Color)-(SP/4FT)

1-1/2"

Black

500 FT

N/A

38.1mm/1.5in

9.53mm/0.375in

1.14mm/0.045in

GMT-421-2-(Color)-(SP/4FT)

2"

Black

250 FT

M/23053/5-116

50.8mm/2.0in

13.97mm/0.55in

1.14mm/0.045in

GMT-421-2-1/2-(Color)-(SP/4FT)

2-1/2"

Black

250 FT

N/A

101.6mm/2.5in

26.67mm/1.05in

1.14mm/0.045in

Buy Direct

To purchase, call (909) 860-1479 to speak to a Gamma Sales Representative, or email us at Sales@GammaElectronics.net.

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