When engineers source components for hydrogen equipment, one question comes up constantly:  This article walks through how we help customers choose the right material — covering permeation resistance, load requirements, tolerance issues, and which parts of a hydrogen system (fuel cells, storage, valves, electrolyzers) each material fits best.

PEEK and PEI are the two go-to engineering plastics for hydrogen fuel cell insulators, seals, and structural parts—but they aren't interchangeable. This guide compares their heat resistance, chemical resistance, and cost, and breaks down which material fits which type of component.

Not sure whether to choose Acetal or Delrin for your application? This guide breaks down the key differences between POM-C and POM-H, including centerline porosity, chemical resistance, and machining performance.