• September 24. 2021

S seal and O ring both can be used for wellhead casing but they have different functions and suitable for different working conditions. O ring is a static seal. It is suitable for lower pressure, small groove gap and smooth groove surface. O ring is usually combined with back up ring. But in hostile environment, such as H2S, high pressure, high and lower temperature, rough groove surface, o ring w...

• July 28. 2023

In the seals manufacturing process, it is essential to ensure the accuracy of dimensions. Only the correct size can ensure that the seals fit well with the equipment and avoid leakages and failures. Therefore, dimensional measurement becomes an essential job. Preparation before measurement Before you start measuring, you need to do some preparatory work. First, clean the surface of seal to remove ...

• August 17. 2023

Grooves and Glands The physical space occupied by the seal is usually referred to as a groove, but it can also be referred to as a gland. In most cases, it’s a rectangular groove cut into the hardware whether it be on a piston, in the housing for a rod, or in the face of two mating surfaces. Compared to O Ring and elastomer seals, PTFE and polymer seals are critically dependent on hardware conditi...

• May 20. 2026

“Stormy waves on the surface, but peaceful and quiet under the sea” — that is the romantic imagination Jules Verne painted in 20,000 Leagues Under the Sea. For engineers engaged in deepwater oil production, however, the real deep‑sea environment is far from “peaceful”. Instead, it is an extreme world that combines high pressure, alternating low/high temperatures, and ...