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Color Name
Black
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Outside Diameter
.250 or 1/4 or 6.4 mm
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Inside Diameter
.125 or 1/8 or 3.2 mm
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Tube Type
Straight
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Packaging
1000' Foot/Reel
Polyurethane was invented in 1937 by German chemist, Friedrich Bayer. His first fibers, named Perlon U, gained popularity during World War II as a replacement for rubber. Its first commercial application was as a thread to make lightweight, stretchable fabric, spandex.* Polyurethane is comprised of two basic materials, isocyanate and polyol. Since Bayer's invention, polyurethane polymers have been improved with various additives to enhance its qualities and make it more resistant to heat and light. There are two general classes of polyurethane and both are commonly found in the market: ether-base and ester-base. Chemically, these are made from two different polyol alcohols that cause similar, but different reactions in the isocyanate. From the users standpoint, the ester-based polymer is less expensive however it degrades when exposed to moisture. Because of this, we manufacture our Fre-Thane polyurethane tubing using the ether-based material. Using urethane tubing reduces the chances of deterioration due to contamination or brittleness.