Product Information Material: Buna-N Select a Product Part NumberSizeThreadIDODThickness CFG100NST1"NST (NH)0.900"1.270"0.125" CFG250NST2-1/2"NST (NH)2.250"3.000"0.187" CFG150NST1-1/2"NST (NH)1.510"1.906"0.125" CFG100S1"NPSH0.900"1.270"0.125" CFG200S2"NPSH1.680"2.340"0.156" CFG150S1-1/2"NPSH1.510"1.878"0.125"