... thread, tubing thread, butt-weld; Component Parts: Nut, Male Sub, Female Sub, Seal Ring; Sour Service Models to NACE MR-01 ... thread, tubing thread, butt-weld; Component Parts: Nut, Male Sub, Female Sub, Seal Ring; Sour Service Models to NACE MR-01 ... pressure; Connections Type: butt-weld; Component Parts: Detachable Nut, Male Sub, Female Sub, Seal Ring, Retainer Segment, Retainer Ring; Sour Service ...