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 & 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 & valves, and 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 for 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, and are a suitable choice for sealing high speed rotating shafts & low pressure lubricants.