Hey all, We have a Hudson Reed A383 body jet in our shower. One of the o-rings / washers / gasket (not sure which is correct term) recently broke, and I'm trying to track down the correct part to replace it with. It's a ball joint, and the gasket is domed so the ball can fit inside it. Outside diameter is approx 13/16 inch Inside diameter is approx 5/16 inch Height is approx 1/4 inch Any ideas? Thanks!