Winborne We provide precision machined gaskets in common sizes (R, RX, BX) and materials including Low-Carbon Steel, Soft Iron, 316 Stainless, 304 Stainless, Inconel, and Rubber … We provide precision machined gaskets in common sizes (R, RX, BX) and materials including Low-Carbon Steel, Soft Iron, 316 Stainless, 304 Stainless, Inconel, and Rubber …