Sealing Double / Single Layer Stuffing Box For API 11B Polished Rod

Stuffing Box Detail information

The stuffing box is a device used in wellheads to provide dynamic sealing between the tubing pipe and the polished rod, sealing the annular space.

The Double Packed Stuffing Box (DPSB) is specifically designed for pumping units and offers several notable characteristics:

1. It features a unique misaligning feature, reducing the need for precise alignment with the pumping unit.
2. The primary packing can be changed under pressure by tightening compression bolts, ensuring ease of maintenance.
3. The DPSB is equipped with cone packing, enhancing the sealing capability of the device.
4. It includes a Lub Upper Gland (LUG) with a grease zerk, allowing for easy lubrication of the rod.
5. Optional components include an Oil Reservoir Gland (ORG) for heightened lubrication and an Anti-Pollution Adapter (APA).
6. The LUG employs two heavy hex nuts on each bolt, providing robust support of up to 20000 lbs. during well servicing operations.
7. A flanged bottom connection is available upon special order, catering to specific installation requirements.
8. Widely utilized within the industry, the DPSB is recognized as one of the most commonly used stuffing boxes.

Stuffing Box Detail information

Puyang Zhongshi Group Co., Ltd., restructured from SINOPEC in 1997 has 20 years experience on manufacturing petroleum machinery products . The company registered capital is 10 million U.S. dollars, with annual export 30 million U.S. Dollars.

We have competitive price of our main products like: subsurface sucker rod pump, pumping unit, cementing tools, wellhead (Christmas Tree), etc, with certificates of API11AX,API11E,API6A,API5CT,ISO14001 and ISO9001 approved. We have 9 factories, 580 employees, including more than 160 technicians and engineers.

With 20 years manufacturing experience and more than 10 years exporting experience, our main clients include all oilfields in China such as: Zhongyuan, Daqing, Shengli, Changqing, Nanyang, Karamay, etc and we have exported to more than 30 countries abroad such as: Indonesia, Thailand, Myanmar, Russia, Kazakhstan, Venezuela, Peru, Columbia, Canada, America, Sudan, Egypt, Iran, Australia etc.

We would like to cooperate with friends from all over the world with high quality products and service to achieve mutual development .