Classification Information
Seals and seal units for oil and gas equipment, namely, tieback seal stem mandrels and tieback seal stem assemblies for casing strings, liner strings, and other oil and gas wellbore tubulars
MachinerySeals and seal units for oil and gas equipment, namely, tieback seal stem mandrels and tieback seal stem assemblies for casing strings, liner strings, and other oil and gas wellbore tubulars
Machinery