Hydril GL® Annular BOP  

Redefining “Field Proven” for 30+ Years

The GL annular has demonstrated its world-class dependability and quality for more than 30 years. Together with its long-life packing unit, the GL is designed to increase uptime by extending the intervals between packing unit changes and shop repairs. In addition:

  • The Hydril packing unit for the GL is specially molded with two different styles of inserts to reduce closing volume and increase closing cycles when compared to Hydril GK® annulars.
  • A replaceable wear plate eliminates metal-to-metal contact between the packing unit inserts and the BOP head.
  • A long piston design provides complete balance, more reliable operation and ease of assembly.
  • The GL features a latched head design.
  • A bolted-in inner sleeve eliminates the need to stress-relieve if the sleeve is damaged in the field.
  • The GL is available with off-the-shelf deliveries for minimal lead time.

Selected Engineering Data*

Bore Size (inches) Working Pressures (psi)
18 3/4 5,000
21 1/4 5,000
  • Carbon steel, stainless steel, and Inconel® 625 are options for the ring grooves.
  • SermaGuard™ coating on all internal surfaces.
  • Packing units with nitrile or natural compounds.

* See brochure for additional data

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