Profile: S F K Polyseal, Inc. concentrates on seals. We supply standard rod seal, piston seal and dirt excluder product lines for hydraulic & pneumatic actuators including eight types of rod seals. Our seals are used in applications from cryogenics to a variety of fluids for fluid power actuators, valves, pumps, motor and process equipment serving all industries. Our seal gland design calculator calculates the parameters for projects using our advanced seal gland design tool and this tool helps to determine rod seal squeeze, extrusion gaps & wear guides parameters.