Home / Catalog / Two-Piece Backing Rings to fit FRP Pipe: Reinforcement Rings - Stand Alone Rings - Spacer / Compensation Rings / Fiberglass Pipe Backing Rings / Page 2 Fiberglass Pipe Backing Rings Showing 21–22 of 22 results Compare 14″ Class 150 T-316L Stainless Steel Two-Piece Reinforcement Ring to Fit Molded Fiberglass Flanges Read more Compare 14″ Class 150 Carbon Steel Two-Piece Reinforcement Ring to Fit Molded Fiberglass Flanges Read more ← 1 2 Request Information