From - DaTong Tech

3M Tape : 

3M UHMW Film Tape 5421,

Additional Information :
Helps protect plastic and metal chutes, guide rails and containers from wear.

Detailed Description :
Transparent, 6.7 mil (0.17 mm) UHMW polyethylene film with rubber adhesive. Low coefficient of friction combined with abrasion resistance make this tape an effective solution for many noise and vibration problems.