"O" ring packings function under the principle of controlled deformation to cause the sealing action. They are widely used as static or reciprocating seals in conjunction with hydraulics, pneumatics, and other mediums of operation. Upon proper application, "O" rings have been used successfully as oscillating and rotating seals. "O" rings are available in a wide variety of synthetic rubbers for accommodating a multitude of operating conditions of pressures, temperatures, and mediums.

Back-up washers of leather and teflon are used in static and reciprocating applications where the pressures exceed 1500 psi. Without the back-up or "anti-extrusion" washer the "O" ring would likely extrude and cause premature failure. Back-up washers are available in most "O" ring sizes. For complete information and engineering counsel on "O" ring applications for rotating and oscillating motions, please contact your Chicago-Allis Sales Engineer.

Contact Us for Sizes and Availability

Back to Products