Product Information Material: Iron Seal: Natural Rubber Working Pressure: 200 PSIG at 70°F (21°C) Select a Product Part NumberStyleSize SL075FSmall Head3/4" SL150FMedium Head1-1/2" SL038FSmall Head3/8" SL050FSmall Head1/2" SL100FMedium Head1" SL200FMedium Head2"