A PTFE (Polytetrafluoroethylene) 2-fold backup ring is a type of sealing component used in hydraulic and pneumatic systems to prevent leakage of fluid or gas between dynamic sealing elements, such as O-rings or piston seals. Backup rings are typically installed in conjunction with primary seals to provide additional support and prevent extrusion or damage under high-pressure conditions.
A 2-fold backup ring has a double-walled design, consisting of two PTFE lips folded back on each other. This configuration provides enhanced support and stability compared to single-fold backup rings, reducing the risk of extrusion and increasing sealing effectiveness.
The primary function of a PTFE 2-fold backup ring is to prevent the primary sealing element, such as an O-ring or seal, from being extruded or damaged under high-pressure conditions. It helps distribute the pressure evenly across the sealing surface and provides a barrier to prevent fluid or gas leakage.
PTFE 2-fold backup rings are widely used in hydraulic and pneumatic systems, including cylinders, pumps, valves, and actuators. They are suitable for high-pressure and high-speed applications where reliable sealing performance is critical.
PTFE 2-fold backup rings can be customized to meet specific application requirements, including size, shape, groove dimensions, and pressure ratings. Customized backup rings ensure optimal sealing performance and compatibility with existing sealing systems.

A PTFE (Polytetrafluoroethylene) 2-fold backup ring is a type of sealing component used in hydraulic and pneumatic systems to prevent leakage of fluid or gas between dynamic sealing elements, such as O-rings or piston seals. Backup rings are typically installed in conjunction with primary seals to provide additional support and prevent extrusion or damage under high-pressure conditions.
A 2-fold backup ring has a double-walled design, consisting of two PTFE lips folded back on each other. This configuration provides enhanced support and stability compared to single-fold backup rings, reducing the risk of extrusion and increasing sealing effectiveness.
The primary function of a PTFE 2-fold backup ring is to prevent the primary sealing element, such as an O-ring or seal, from being extruded or damaged under high-pressure conditions. It helps distribute the pressure evenly across the sealing surface and provides a barrier to prevent fluid or gas leakage.
PTFE 2-fold backup rings are widely used in hydraulic and pneumatic systems, including cylinders, pumps, valves, and actuators. They are suitable for high-pressure and high-speed applications where reliable sealing performance is critical.
PTFE 2-fold backup rings can be customized to meet specific application requirements, including size, shape, groove dimensions, and pressure ratings. Customized backup rings ensure optimal sealing performance and compatibility with existing sealing systems.