These suction cups are manufactured from both nitrile rubber or polyurethane materials. These suction cups are silicone free and consequently offered for use on A surface steel sheet primarily in the automotive steel stamping industry. Durometers of suction cups vary from 45 shore to 60 shore depending on the suction cup model choice.
If you are unsure of what you need, please contact us and we shall be happy to help with your selection.