Description
DEENPU supplies bonnet rebuild kits, seals and tandem boosters fully interchangeable with Cameron U and UM BOP components. For popular size U BOPs, a bonnet rebuild softgoods kit provides all parts required to reseal the operating system — shrink-firm packed to prevent loss and assure long shelf life, with all parts identified by part number and parts-list index number.
CAMLAST™ bonnet and connecting rod seals are recommended (with CAMRAM 350 packers) when high temperature and/or high H₂S concentrations are expected. Tandem boosters approximately double the force available to shear pipe without increasing wear on the packers.
All DEENPU bonnet seals, connecting rod seals, seal carriers, softgoods kits and tandem booster parts are dimensionally and functionally interchangeable with genuine Cameron parts.
Bonnet Rebuild Softgoods Kit Components
Each bonnet rebuild softgoods kit contains the seals and rings required to reseal the BOP operating system, including: plastic packing ring, plastic energizing ring, connecting rod seal ring, back-up rings, lip seals, tail rod seal, wiping O-ring, and all operating/ram-change piston and cylinder O-rings.
Bonnet Seals & Connecting Rod Seals (Nitrile & CAMLAST)
| BOP Size & Pressure | Nitrile Bonnet Seal | Nitrile Conn. Rod Seal | CAMLAST Bonnet Seal | CAMLAST Conn. Rod Seal |
|---|---|---|---|---|
| 7-1/16″ 3/5/10/15K | 644197-01-00-01 | 212741-37-00-01 | 644573-01-00-01 | 645077-37-00-01 |
| 11″ 3/5/10K | 644197-02-00-01 | 212741-38-00-01 | 644573-02-00-01 | 645077-38-00-01 |
| 11″ 15K (Model 79) | 049272-03-00-01 | 212741-38-00-01 | 644898-01-00-01 | 645077-38-00-01 |
| 13-5/8″ 3/5/10K | 644197-03-00-01 | 212741-36-00-01 | 644573-03-00-01 | 645077-36-00-01 |
| 13-5/8″ 15K | 644196-01-00-01 | 212741-36-00-01 | 644898-02-00-01 | 645077-36-00-01 |
| 16-3/4″ 3/5/10K | 644197-04-00-01 | 212741-44-00-01 | 644573-04-00-01 | 645077-44-00-01 |
| 18-3/4″ 10K | 644197-05-00-01 | 212741-60-00-01 | 644573-05-00-01 | 645077-60-00-01 |
| 20-3/4″ 3K / 21-1/4″ 2K | 046613-16-00-01 | 212741-36-00-01 | 046613-26-00-01 | 645077-36-00-01 |
| 21-1/4″ 5/10K (Model 79) | 644197-08-00-01 | 011741-58-00-01 | 644573-08-00-01 | 645077-58-00-01 |
| 26-3/4″ 2/3K | 644197-09-00-01 | 212741-36-00-01 | 644573-09-00-01 | 645077-58-00-01 |
Bonnet Seal Carriers for U, UM & U II BOPs
| BOP Type | Size & Pressure | Seal Carrier Part No. | Retainer Ring Part No. | Bonnet Seals Part No. |
|---|---|---|---|---|
| U, UM | 11″ 3/5/10K | 645464-02-00-01 | 702645-27-61 | 645484-02-00-01 |
| U, UM | 13-5/8″ 10K | 645507-01-00-02 | 702645-27-91 | 645509-01-00-01 |
| U, UM | 13-5/8″ 15K | 2010145-01 | 702645-27-71 | 2010146-01 |
| U, UM | 18-3/4″ 10K | 2010185-01 | 702645-28-31 | 2010184-01 |
| U II | 18-3/4″ 10/15K | 645464-01-00-02 | 645485-01-00-01 | 645484-01-00-01 |
Tandem Booster Parts — UM 7-1/16″ (3,000–15,000 psi)
| Item | Description | Part No. |
|---|---|---|
| 1 | Cylinder | 644959-01 |
| 2 | Cylinder Head | 2231474-01 |
| 3 | Piston | 644961-01 |
| 4 | Tail Rod | 2231207-01 |
| 5 | Adapter | 2231475-01 |
| 16 | Centralizing Ring | 236488-01 |
| — | Repair Kit (complete) | 2164148-01 |
Tandem boosters also available for U BOP threaded and composite styles, and UM 11″ 15,000 / 13-5/8″ 10,000 psi. A BOP with tandem boosters delivers approximately double the shearing force. Refer to Cameron EB720D for application guidance.
Optional Ram Wear Pads
| BOP Size & Pressure | Left Pad Part No. | Right Pad Part No. | Screw Part No. |
|---|---|---|---|
| 7-1/16″ 3/5/10/15K | 2010071-02 | (both included) | — |
| 11″ 3/5/10K | 2011278-01 | (both included) | 644349-03 |
| 13-5/8″ 3/5/10K | 2011277-01 | 2011277-02 | 644349-01 |
| 13-5/8″ 15K | 644348-04 | (both included) | 644349-01 |
| 16-3/4″ 10K | 2011281-03 | 2011281-04 | 644349-02 |
| 18-3/4″ 10K | 2011280-01 | 2011280-02 | 2010506-01 |
| 21-1/4″ 5/10K | 2231763-01 | 2231764-01 | 644349-01 |
Interchangeable Spare Parts Available
DEENPU supplies interchangeable Cameron bonnet rebuild softgoods kits, bonnet seals, connecting rod seals (nitrile & CAMLAST), bonnet seal carriers, ram wear pads, and tandem booster assemblies and repair kits for U, UL, UM and U II BOPs.
Ordering Information
To order, please specify: BOP type (U / UM / U II), bore size and working pressure, and the items required (rebuild kit, bonnet seal, connecting rod seal, seal carrier, wear pads, or tandem booster parts). Provide the Cameron part number for cross-reference where available.
Contact DEENPU for Orders & Technical Support
Email: SALES@DEENPU-MACHINERY.COM
Phone / WhatsApp: +86 18051728055
ATTN: LINDA HU
Address: Yandu District, Yancheng City, Jiangsu Province, China
Web: www.deenpu-machinery.com


Our company has been in the oil & gas drilling equipment industry for over more years, We are here to serve all your drilling equipment needs.
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