Profile: Gallagher Fluid Seals, Inc. is a distributor and manufacturer of fluid sealing products. Our piston seals are used in hydraulic cylinder systems. Machined grooves in the cylinder piston allow the piston ring to seal directly against the cylinder bore. The sealing lips are accurately machine trimmed to ensure low pressure sealing while the material resists extrusion at high pressures. We also offer rod seals, wiper seals, buffer seals, and wear rings.