• May 27. 2026

In hydraulic sealing systems, PolyPak seals and U-cup seals are both widely used for rod and piston sealing applications. Because their designs appear similar, many users assume they perform the same function. However, there are important differences in structure, sealing behavior, pressure capability, and application suitability.   So how do PolyPak seals compare to standard U-cup seals, and...

• July 29. 2026

Selecting the right casing hanger seal is an important part of designing or maintaining an oil and gas wellhead. The seal must maintain pressure integrity between the casing and wellhead components while accommodating the actual dimensions, surface condition, pressure, temperature, and well fluids involved.   A seal that matches the nominal casing size may not necessarily be the right choice....