John Guest PP221212W Stem Elbow Connector Polypro - 3/8 Stem x 3/8 PP221212W:10PK. John Guest PP221212W Stem Elbow Connector Polypro - 3/8 Stem x 3/8 Features: White polypropylene construction EPDM O-ring FDA approved material NSF Certified 51 & 61 Suitable for water & food applications 70818C John Guest PP Series Polypropylene Fittings