Spirotallic®
They are manufactured under specifications such as ASME B16.20 (from 1/2” to 24” NPS), suitable for ASME B 16.5, ASME B 16.47 series A or MSS SP flanges 44, ASME B 16.47 series B or API 605, MIL G 15342 and MIL G 24716.
Recommended for flanged joints, female/male flanges, tongue/groove, body-bonnet joint on valves.