19.500" center hole diameter slpiced o-cord 0.139 + or - 0.005" c/s cut to 61.696 + or - 0125" long -- a solid piece with a nomial 19.500 in made from N7021 nitrile 70 + or - 5 durometer
o-ring cord temp: -30 deg f to +250 deg f -- parker compound general purpose mil-g-21569 cl 1, ul listed -30 deg to +250 deg f --- o-ring cord stock, 22-1/2in long