Hydril Annular BOPs

The best annular in the business.

Available in sizes ranging from 7” to 18”, handling pressures from 3k to 15K.

Our models include:


GXP: Hydril’s most advanced Annular BOP for all offshore applications. Available in 13 5/8” (5K), 13 5/8” (10K) and 18 ¾” (10K).


A variation of our GX annular BOP, drilling contractors’ “best annular in the business,” the Annu-Flex combines a reliable subsea annular blowout preventer with a maintenance-free, flexible underwater riser joint.

Other Models

We also continue legacy support of previous models covering a variety of bore sizes and pressure ratings. Contact your sales support team to find out more.

Please contact us at marketing@hmhw.com if you have any questions.