1, O-ring is an annular seal made of rubber or elastic material. White ring refers to an annular seal made of polytetrafluoroethylene (PTFE), also known as PTFE ring.
2. Different uses. O-rings have a circular cross-section and can withstand high pressure in sealing applications. O-ring forms a seal by compression in the sealing process, which can provide reliable sealing effect in high pressure environment. O-rings are commonly used in high-pressure pipelines, joints, valves and other equipment. The material of white circle has low friction coefficient and excellent chemical corrosion resistance. White rings are usually used in sealing applications that require high temperature, high pressure and corrosive media. White circle is mainly suitable for special industries such as chemical industry, petroleum and pharmacy. And some key positions in the high-pressure hydraulic system.