Profile: Valley Seal Company specializes in sealing solutions. We offer hydraulic seals, pneumatic seals, piston seals and all types of fastener seals. We provide hydraulic seals for the aerospace and military markets. Hydraulic seals are designed for high-pressure dynamic applications, such as hydraulic cylinders. Pneumatic seals are used in applications with either rotary or reciprocating motions. These are often used in pneumatic cylinders and valves & usually are not under high pressure. Pneumatic seals require minimal lubrication when exposed to air in order to create a tight seal. Piston seals are used from medium to heavy-duty double-acting hydraulic piston seal applications. Rotary shaft seals/oil seals are used in a wide variety of pumps and motors & are a suitable choice for sealing high speed rotating shafts & low pressure lubricants.