A PTFE gasket is a sealing component made from polytetrafluoroethylene, widely used in chemical and industrial sealing applications.
What Is a PTFE Gasket?
A PTFE gasket is a sealing component manufactured from polytetrafluoroethylene. Depending on the application, PTFE may be used for flat gaskets, sealing rings, valve seats, V-shaped seals, piston rings, and other customized sealing components.
These parts can be machined or cut from PTFE sheets, rods, or tubes according to the required dimensions, profile, thickness, and sealing conditions.
Operating Conditions and Seal Selection
The suitability of a PTFE gasket depends on the operating temperature, pressure, chemical medium, flange design, surface condition, bolt load, gasket thickness, and whether the application involves static or dynamic sealing.
PTFE offers excellent chemical resistance and low friction, but it may creep or deform under sustained load. Filled PTFE, expanded PTFE, reinforced structures, or alternative gasket materials may therefore be selected for applications involving higher pressure, temperature, or mechanical load.
The gasket material and construction should always be confirmed according to the actual equipment design and service conditions.
Properties of PTFE Gasket
PTFE provides broad chemical resistance, low friction, electrical insulation, weather resistance, and useful performance across a wide temperature range.
It is resistant to many acids, alkalis, solvents, and corrosive media, although compatibility must still be checked for the exact chemical concentration, temperature, pressure, and operating conditions.
Manufacturing Ability
We manufacture custom PTFE gaskets, rings, valve seats, seals, washers, and other machined plastic components according to customer drawings, samples, dimensions, material grades, quantities, and application requirements.
To review our plastic machining, injection moulding, extrusion, rubber processing, metal casting, CNC machining, and other production options for custom industrial components, explore our complete custom manufacturing processes.
Other types of Gasket or Washer Service
Other Gasket and Sealing Components
In addition to machined PTFE gaskets, we can manufacture or source custom sealing components such as spiral-wound gaskets, graphite gaskets, metal-reinforced gaskets, corrugated metal gaskets, non-asbestos gaskets, and other industrial sealing parts according to customer specifications.
Typical Applications
PTFE gaskets are commonly used in:
- chemical processing equipment
- pumps and valves
- heat exchangers
- pipeline sealing systems
- pharmaceutical and food processing equipment
Typical industries include chemical processing, shipbuilding, power generation, petroleum equipment, automotive machinery, boilers, pumps, valves, and general industrial fluid systems.
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