Features

• O-Ring Material Tester. Handy compact tool to indicate the material composition of 100, 200, 300 and 400 series O-rings of 60 to 80 Durometer, which are already known to be either Viton®, Kalrez®, Nitrile or EPDM O-rings must be within their rated shelf life and be un***d and undamaged Tester releases a weight that falls a set distance; the return bounce from the material indicates the material type The height of the first bounce will rise to one of four calibrated ranges. Highest graduation is EP (Ethylene Propylene [EPDM]), next is Nitrile, then Kalrez®, and the lowest graduation is Viton®