Alpha Wire Heat Shrink Tubing Kit, Black 6.35 mm, 9.53 mm, 12.7 mm, 19.05 mm Sleeve Dia. x 152mm Length 2:1 Ratio,

  • RS Stock No. 821-4705
  • Mfr. Part No. F221MS/2 BK032
  • Brand Alpha Wire
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): JP
Product Details

AlphaWire Heatshrink Tubing Kit FIT-221-MS-2 Black

Assorted diameters of 6 inch (152 mm) pre-cut lengths of heat shrinkable, cross-linked irradiated flexible polyolefin tubing. AlphaWire FIT heat shrink tubing offers a reliable means of protecting and sealing terminations or adding greater mechanical robustness. FIT preferred heat shrink products are made from premium compounds under tight manufacturing controls. Because of this, FIT heat shrink tubing has excellent physical attributes including low longitudinal shrinkage and wide operating temperature ranges, while conferring an elegant appearance when used alone or on OEM equipment.

Features and Benefits

Shrinkage ratio approximately 2:1 @ 121°C
Tensile strength 1500 psi
Longitudinal shrinkage 5% maximum
Dielectric strength 500 Volts/mil
Volume resistivity 1014 Ω/cm
Flammability self-extinguishing

Product Application Information

This heat shrink tubing is for general use including research and development, engineering development and maintenance applications.

Kit Contents



For a secure fit, it is necessary that the tubing's recovered diameter (the diameter after shrinkage) is smaller than the diameter of the area to be insulated. At the same time, the tubing's expanded diameter (the diameter before shrinkage) needs to be large enough to fit easily over the area to be insulated, as well as any connectors attached to it.


UL, CSA, AMS-DTL-23053/5 Class 1

Attribute Value
Sleeve Diameter 6.35 mm, 9.53 mm, 12.7 mm, 19.05 mm
Shrunk Diameter 3 mm, 5 mm, 6 mm, 10 mm
Colour Black
Sleeve Type Heat Shrink
Shrink Ratio 2:1
Sleeve Length 152 mm
Material Polyolefin
Series FIT-221
Available to back order for despatch 18/08/2020
Price Each
£ 24.89
(exc. VAT)
£ 29.87
(inc. VAT)
Per unit
1 - 2
3 - 4
5 +
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