O-Ring seal provides positive seal;Zinc Plated for corrosion protection;Mechanically held - Provides maximum pull-out Resistance - tensile strength exceeds requirements of D.O.T., Title 49 of the Code of Federal Regulations, Part 192.283 (b);Available with 2406/2708 OR 3408/4710 P.E. Extensions;Conforms to ASTM D2513 and D2683 and ANSI B31.8 and DOT 192.121;Available with male pipe threaded end or with extended outlet with butt weld end;Metallic outlet available in Steel or Brass