... case, roll ring and flange, polycarbonate window, brass or stainless Liquid Filled Gauge-SSFor anti-shock use, ... stainless steel case, roll ring and flange, polycarbonate window,brass ... bspt 4) Material of the case, roll ring and flange: stainless steel5) Material of the connection and internal: ... PVC/Steel/Wood Pallet Liquid Filled Gauge with flange