Quick look Danco 35719B O-Ring 39/64X3/8X7164#74,•Made from compound Nitrile Butadiene Rubber,Bagged, $0.99
Quick look Danco 35706B O-Ring #88 2-1/8X1-15/16,•Made from compound Nitrile Butadiene Rubber,Bagged, $1.06