O-Rings are used in sanitary pipeline systems for the Food, Dairy, Beverage, Pharmaceutical and Bio-Tech industries. Rubber Fab offers a full line of AS568 dash numbers, metric, and specialty o-ring sizes that are manufactured using EPDM, FKM Fluoroelastomer, Buna-N, PTFE, Silicone, Detectomer® and Tuf-Steel® FDA or USP Class VI compliant compounds.