YONSHA Disc suction cup-DS31C is made of NBR, SI and PU material. They come in several diameters to suit different needs ranging from 17 to 46 mm. They are practically a type of anti-static pneumatic element working through the air pressure difference between inner and outer suction cups.
The build material offers different characteristics respectively. General applications include CDs, DVD, electronics, foodstuffs, automotive etc.