Part # Shrink Ratio  Material  Temperature  Ratings 
FIT-221-MS-2 2:1  XLPO  -55 to 135  AMS DTL-23053/5 CL 1 Colors, AMS DTL-23053/5 CL 2 Clear, CA Prop 65, CSA 198 Except Clear, RoHS, UL 224 Except Clear 
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1) Tubing Type Heat Shrinkable Tubing (Assortment)
2) Tubing Material Cross Linked Polyolefin
3) Color(s) BLACK, RED, BLUE, YELLOW
Part
Number
Minimum
Supplied ID
(In)
Maximum
Recovered ID
(In)
Nomiminal
Recovered Wall
Thickness
(In)
Quantity
FIT-221-1/4 0.250 0.125 0.025 4 x 6 IN
FIT-221-3/8 0.375 0.187 0.025 4 x 6 IN
FIT-221-1/2 0.500 0.250 0.025 4 x 6 IN
FIT-221-3/4 0.750 0.375 0.030 4 x 6 IN
1) UL Standard 224 (Except Clear) 600V 
2) CSA International Standard 198 (Except Clear) 600V 
3) Other AMS-DTL-23053/5 Class 1 (Except Clear) 
1) EU Directive 2011/65/EU(RoHS2):
 All materials used in the manufacture of this part are in compliance with European Directive 2011/65/EU regarding the restriction of use of certain hazardous substances in electrical and electronic equipment. Consult Alpha Wire's web site for RoHS C of C.
2) REACH Regulation (EC 1907/2006):
 This product does not contain Substances of Very High Concern (SVHC) listed on the European Union's REACH candidate list in excess of 0.1% mass of the item. For up-to-date information, please see Alpha's REACH SVHC Declaration.
3) California Proposition 65:The outer surface materials used in the manufacture of this part meet the requirements of California Proposition 65.
Physical & Mechanical Properties
1) Temperature Range -55 to 135°C 
2) Shrink Ratio Approximately 2:1 
3) Full Recovery Temperature 121°C 
4) Minimum Shrink Temperature 90°C 
5) Tensile Strength 1500psi, Min ASTM D638
6) Elongation 200%, Min ASTM D638
7) Low Temperature Flex(-55°C) no cracking AMS-DTL-23053
8) Heat Shock(250°C,4hrs) no cracking AMS-DTL-23053
9) Secant Modulus 2.5x10 4 psi, Min ASTM D882
10) Longitudinal Change +/-5% AMS-DTL-23053
11) Specific Gravity(Colors) 1.35, Max ASTM D792
Specific Gravity(Clear) 1.00, Max 
12) Shelf Life 5 Years @ 18 to 35°C 
Electrical Properties
1) Dielectric Strength 500 V/mil, Min ASTM D876
2) Volume Resistivity 1x10 14 ohm-cm, Min ASTM D876
Chemical Properties
1) Water Absorption 0.50%, Max ASTM D570
2) Corrosion(0°C,16hrs) no corrosion AMS-DTL-23053
3) Fluid Resistance(23°C,24 Hrs) 1000 PSI, Min AMS-DTL-23053
4) Fungus Resistance Pass AMS-DTL-23053
5) Vacuum Outgassing - CVCM 0.10%, Max ASTM E595
6) Halogen Free No 
7) Lead Free Yes 

Alpha Wire FIT® Kits are great resources for use in R&D labs, engineering development, and maintenance departments. These kits provide heat-shrink tubing is various sizes and colors in pre-cut pieces up to 6". 

Additionally, our FIT-MGKIT-1 comes with a FIT MINIGUN so you can have everything you need to test our product at your fingertips.  We offer our kits in a variety of colors, sizes, shrink ratios and materials. 

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