1. Materials

2. Static

3. Dynamic

4. References

A hydraulic seal is a relatively soft, non-metallic ring, captured in a groove or fixed in a combination of rings, forming a seal assembly, to block or separate fluid in reciprocating motion applications. Hydraulic seals are vital in machinery. Their use is critical in providing a way for fluid power to be converted to linear motion.

Materials

Hydraulic seals can be made from a variety of materials such as polyurethane, rubber or PTFE.^[1] The type of material is determined by the specific operating conditions or limits due to fluid type, pressure, fluid chemical compatibility or temperature.^[2]

Other materials to consider depending on your application are Viton, NBR, EPDM, and filled PTFE.^[3]

Static

A static hydraulic seal is located in a groove and sees no movement - only sealing within its confined space, acting like a gasket.To achieve this the gasket should be under pressure. The pressure is applied by tightening of the bolts.

Dynamic

A type of dynamic hydraulic seal called a rod seal is exposed to movement on its inner diameter along the shaft or rod of a hydraulic cylinder. A type of dynamic hydraulic seal called a piston seal is exposed to movement on its outer diameter along the tube or bore of a hydraulic cylinder.

References

• Strider Farm
• Strider (Half-Life)
• Strider Hiryu
• Strider Hiryu (character)
• Strider Hiryu (series)
• Strider II (video game)
• Strider (NES)
• Strider (NES video game)
• Strider Returns
• Strider Rock
• Striders
• Strider Wildlife Management Area
• Strides
• Stride (surname)
• Striding Folly
• Stridova
• Stridova albigutta
• Stridsbat 90
• Stridsbat 90H
• Stridsbåt 90 E
• Stridsvagn m/21-29
• Stridsvagn m/37
• Stridsvagn m/42
• Stridulate
• Stridulatory