Seal-Adapter Ring i.d. Upper-FH2821NL-09

Our annular BOPs are designed and manufactured to API Spec 16A standard. Featuring a spherical or tapered packing element our they have a substantial significant volume, low operating pressures and excellent sealing.

Spherical or tapered packing element offers significant storage volume, low operating pressure and excellent sealing.
Bonnet is hemispherical-shaped so there is no stress concentration whenever bearing pressure. Pressure is evenly distributed; convenient for disassembly and assembly (except FHZ5414).
Low position of piston gives a shorter moving distance and less ring wear.
Lip type seal rings means longer service life.