Spears S118 Series PVC Pipe Fitting, Repair Coupling with EPDM O-ring, White, 3/4" Spigot x 3/4" Socket Coupling for replacing damaged fittings Spigot on one end and a socket connection on the other for connecting two pipes with different ends PVC for corrosion resistance, high strength, and less weight than fittings made from metal EPDM seal for resistance to weathering, ozone, UV light, electricity, oils, water, steam and some solvents Meets ASTM D2467 for quality assurance and NSF/ANSI Standard 61, Annex G for potable water