Octi-Ring O-rings eliminate problems associated with standard O-rings, such as rolling and twisting of groove and nibbling in pressure cycling. They can be retrofitted into existing grooves instead of re-machining to accommodate U-cups. They withstand pressures to 5000 psi without backup ring and operate in temperatures from -40° to 400° F. They are less likely to be damaged during assembly, especially by long rods or bores. Grades available for water hydraulics.
American High Performance Seals, (412) 788-8815, www.ahpseals.com