Product Information Material: CF8M Stainless Steel Seat: 15% glass reinforced RTFE Select a Product Part NumberSize BV2GG-050CC-A1/2" BV2GG-150CC-A1-1/2" BV2GG-400CC-A4" BV2GG-075CC-A3/4" BV2GG-200CC-A2" BV2GG-250CC-A2-1/2" BV2GG-300CC-A3" BV2GG-100CC-A1"