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WebMaintain pressure inside cylinders and prevent fluid leaks 55 products Buffering Seals Protect hydraulic cylinders from pressure spikes and shock in high- pressure applications 24 products Head Seals Maintain a seal even under fluctuating pressure; more reliable than an O-ring with a backup ring WebUL Recognized (UL Type 4X/6 enclosures) and IP66/68 rated, Seeloc Washers provide a high-performance, air- and liquid-tight seal that is ideal for applications where spray, … WebPiston seals maintain sealing contact between a piston and cylinder bore. The moving piston rod generates high pressure on the piston seal which increases contact forces between the seal and cylinder surface. For this reason, the surface properties of the sealing surfaces are critical to proper seal performance. east kentucky power careers