• 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...

• October 16. 2026

Seals are vital for stable hydraulic system operation. Wrong material selection causes leakage and premature aging, leading to costly downtime. Nitrile Butadiene Rubber (NBR), Fluoroelastomer (FKM) and Polyurethane (PU) are the most common hydraulic sealing materials, with distinct performance in temperature, pressure and fluid compatibility.   NBR (Nitrile Butadiene Rubber) NBR is a cost-eff...