FEP Roll Covers
Heat shrink tubing is ideal where protection from adverse environments is required. Its simplicity of installation reduces maintenance and down time costs. It also provides excellent corrosion resistance, protection from physical abuse, shock and abrasion resistance, excellent electrical properties and high purity and transparency. Shrinkage is approximately 20%. The shrinkage temperature is 350°F. The grip force is 5-8 psi and the surface finish is 40 micro inches. The continuous use temperature for Teflon® FEP is 400°F. However, under higher loadings, this drops substantially. For roll cover applications where higher pressure is involved, the temperature should not exceed 200°F. In those higher pressure and heat applications, an etched I.D. tube should be used with an adhesive.
Select nearest nominal diameter larger than desired size. Choose lengths based on approximate 3% shrinkage in length. For roll covers, also allow an additional 2" or 3" in length for end cuffs. Scissors or a sharp utility knife can be used to cut tubing. The part to be covered should be clean and dry. Slip tube over part to be covered. For critical applications, care should be taken not to nick or gouge tubing. To shrink tubing onto part, apply 250-400°F, depending on application. This can be done by using a hot air oven or a commercial hot air gun. For roll covers, it is recommended two hot air guns, one on each side of roller, be used. The roller and tube should be uniformly rotated while applying heat.
How to determine roll cover size. Measure the roll diameter exactly and then use the nominal diameter in the chart to select the appropriate roll cover size. Non-standard diameters are available.
Standard Lengths: 10, 12, 14, 16, 18 & 20 ft.
Standard Thickness: nominal .020"
FEP ROLL COVERS AVAILABILITY
|Nom. I.D. Diameter (in.)||Min. I.D. before shrinkage (in.)||Min. I.D. after shrinkage (in.)|