Backup rings are made of a relatively hard material. They are installed in the gland between an O-ring (or an X-ring) and the low-pressure side of the seal to prevent the O-ring from being forced into the extrusion gap. Backup rings are commonly used when an application operates under pressures exceeding 1,500 psig, or when components are designed with a relatively large extrusion gap through the gland. Backup rings enable slightly lower machining tolerances and increase the seal performance and seal life. CTG supplies backup rings in different styles, including solid rings, split rings, and double (spiral) rings. We manufacture backup rings in any size, and in your choice of material.\ Applications High temperature High pressure Glands with a relatively large tolerance gap Static or dynamic systems Corrosive environments