Annular BOP must be used with hydraulic control system．It is usually with ram type BOP，but it can also be used independently. It can be used for
following operations：
It can seal on almost any shape of size-Kelly，drill pipe, tool joints, drill collars, casing or wireline．
When there is no drilling tool in hole, it can completely shut off the hole．
With an accumulator，forced tripping with 8° ／35°welded tool joints is allowed.
| List 5 Parts list | ||||
| No. | P/N | Description | Qty. | Notes |
| 1 | America standard G2150 |
D-type shackle 11/2″ | 4 | |
| 2 | 02-1009 | Upper housing | 1 | |
| 3 | 02-1007 | Nut 2.25″-8UN-2B | 24 | |
| 4 | 02-1008 | Bolt 2.25″-8UN-2AX338 | 24 | |
| 5 | 150576 | Spherical rubber | 1 | Same as F35.11.00 |
| 6 | 031094 | Top O-ring,dust-proof ring | 1 | |
| 7 | 02-1012 | Dust-proof ring | 1 | |
| 8 | 030772 | Bottom O-ring,dust-proof ring | 1 | |
| 9 | 031096 | Inner seal ring,dust-proof ring (top) |
1 | |
| 9A | 030771 | nner seal ring,dust-proof ring (bottom) |
1 | Same as F35.14.00 |
| 10 | 150613-4 | Wear strip,dust-proof ring | 1 | |
| 11 | 031097 | Seal ring,body(top) | 1 | |
| 11A | 030770 | Seal ring,body(bottom) | 1 | Same as F35.16.00 |
| 12 | 150613-6 | Wear strip,body | 1 | |
| 13 | 031029 | Seal ring,piston | 2 | |
| 14 | 150613-5 | Wear strip,piston | 2 | |
| 15 | 02-1011 | Piston | 1 | |
| 16 | 02-1010/A | Body | 1 | |
| 17 | RS11888.23 | Plug NPT11/2″ | 2 | |
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