The ring seal is designed as part of a universal preventer for sealing the wellhead around any part of the drill string, and for short-term complete shut-in of the well when there is no tool in it.

  • Meets technical requirements API 16A
  • Nominal size, mm (in): 180-430 (7 1/16-16 3/4)
  • Work pressure, MPa (PSI): 35-105 (5000-15000)
  • Service environment: oil, gas, solution, water
  • Work temperature, °С: от -60 до +121
  • Material class: АА, ВВ, СС, DD, ЕЕ, FF, HH

Specifications

№ Type Nominal size Work pressure (MPa/PSI)
mm in 35 (5000) 70 (10000) 105 (15000)
1 UK 180 180 7 1/16 + + +
2 UK 230 230 9 + + +
3 UK 280 280 11 + + +
4 UK 350 350 13 5/8 + + +
5 UK 430 430 16 3/4 + + –