Carbon steel alloy with corrosion-resistant zinc nickel coating; Sizes and configurations from 1/2 inch to 4 inch; HNBR sealing element for fuels and gases; Graphite separator ring engineered to withstand high temperatures; Most application approvals of any carbon steel press fitting system; For use with ASTM Schedule 5 to Schedule 40 carbon steel pipe Connections in 16 seconds or less; Can reduce labor costs by as much as 60-90%; Smart Connect technology helps identify unpressed connections; Approved for underground use according to local code