... ring and flange, polycarbonate window, brass or stainless Liquid Filled Gauge-SSFor anti-shock use, stainless steel ... threads: npt, bsp, bspt 4) Material of the case, roll ring and flange: stainless steel5) ... Material of the connection and internal: brass, chrome plated brass, stainlesssteel6) Scale: single or double with psi ( ... packed in PVC/Steel/Wood Pallet Liquid Filled Gauge with flange