Last update: Dec. 25, 2000
©By: Craig Smith
Formatted for the Morgan Web page by John T. Blair
It's time to put in prospective the subject of shrink tubing use and types.
There are many types of "tubing":
Tubing has different shrink ratios per the product, 2:1 is a norm up to 4:1
as a high. PVC is what the average person will see in Radio Shack and
other like consumer outlets, to get the original OEM products you need to
do a little research and ask about the applications for the use.
- Irradiated Polyolefin
Each has it's own properties that lends itself to the specific application
It is available in shrink ratios of 2:1 and shrinks at 121c. It is also
available with shrink rations of 3:1, 4:1 and in most colors. In the
electronics OEM world, Irradiated Poly is the norm, not saying that
this is an absolute, some manufactures use a variety of different products
for a variety of different applications.
In the automotive world the use of Irradiated Poly is widely accepted, some
applications call for the addition of an intermelt liner. The intermelt
linner consists of a meltable inner wall that when heated in excess of 135c
softens and forces by the shrinking of the poly makes a weather tight seal.
This is a great seal, but the cost for this product is 4 times the price of
a standard poly.
It is available in shrink ratios of 2:1 and 4:1. Colors available at a
premium. It is rated at 250c. Used mostly in Aerospace, Electronics,
Chemical, Medical, Nuclear, and other extreme applications. The tubing
requires 650f (350c) to start to shrink.
It is available in shrink ratio of 2:1 and shrinks at 135c. It comes in Black only.
It is rated at 120c, very expensive, used in tough flexible applications.
It is available in shrink ratio of 2:1 and shrinks at 150c. It comes in
Clear only and is a derivative of Teflon. A tough thin wall tubing with
outstanding cut - through and abrasion resistance. Used almost exclusively
by the military and other manufacturers of extreme exposure applications.
It is available in shrink ratio of 2:1 and shrinks at 200c. Black is the
standard color. Fluoroelstomeric tubing able to withstand a wide variety
of fuels, lubricants, acids, and highly corrosive fluids at temperatures
up to 200c.
It is available in shrink ratio of 2:1 and shrinks at121c. It's also
avaiable in a 4:1 shrink ratio and shrinks at 121c. Any color! Low
cost, non irradiated tubing that is available at just about any
electronics supplier in the world.
As mentioned earlier, there is a mired of product types to choose from.
As a fellow English Car enthusiast, I wouldn't want to use an inferior
product because I didn't know the difference.
So now you know, Knowledge is POWER.
Greenville, SC 29615
(Ed. If you'd like to order some heat shrink tubing, you can call
Greg at work at: 800/692-2323 ext. 2105, fax him at 864/234-1020, or
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