Jiangsu Jintai Sealing Technology Co., Ltd. Home / Product / Non Metallic Gasket&Sheet / Expanded PTFE

Expanded PTFE

Expanded polytetrafluoroethylene (ePTFE) Mifu gasket adopts a strong porous structure, which greatly improves the tensile strength and heat resistance of PTFE, as well as its softness and better chemical resistance, making it suitable for various chemicals. Our company can supply pipeline flanges for products and acid-base solutions and gaskets for valve seals in various sizes at any time.

As the better substitute for traditional asbestos and hard pure PTFE gaskets, expanded polytetrafluoroethylene (ePTFE) sealing sheets are currently the plate seals with better creep and cold flow resistance among all PTFE materials. It requires a small tightening force (2 bar) and can withstand considerable internal pressure in a changing pressure environment. It is suitable for sealing applications of more than any chemicals or chemical processes below 315°C. Expanded polytetrafluoroethylene (ePTFE) gaskets are not affected by steam and cannot withstand rapid temperature cycle changes, so they are also an ideal sealing material for boiler fluid delivery pipelines.

The expanded polytetrafluoroethylene (ePTFE) gasket is a high-density fiber structure. After being compressed, the high-density fiber structure will tangle with each other to form a dense "solid-like" texture that is airtight and watertight. It is still soft and stable in performance after high pressure or long-term pressure. It always maintains high tensile strength. Because of its better creep resistance, it can always maintain better sealing. This product is available in various widths and thicknesses and can be quickly and easily processed without cutting in advance, so it can be constructed on-site. The sealing effect is better than traditional hard pure PTFE gaskets and the required tightening force is low. It can be applied to all metal, plastic and various fragile flange seals. It can also be combined with natural tooth-shaped metal sheets to make new tooth-shaped sealing gaskets suitable for high-temperature and high pressure working conditions.

  • Expanded PTFE
  • Expanded PTFE
  • Expanded PTFE




Applicable temperature range


Pressure, max.




Applicable fluid media

Steam, strong acid, strong base, aqueous hydrogen chloride solution and anhydrous hydrogen fluoride

Fluid pH range


Compression ratio, ASTM F36


Rebound rate, ASTM F36



About Us
Jiangsu Jintai Sealing Technology Co., Ltd.
Jiangsu Jintai Sealing Technology Co., Ltd.
Founded in 2004 , which located on Xingyuan Road, Yuanzhu Industrial Park, in Taixing, Jiangsu Province. With the accumulated years of scientific experiments and manufacture, our company has possessed sound quality management manuals and monitoring systems.
As a large comprehensive sealing technology enterprise, we specialize in researching, manufacturing and selling various types of seals, environment-friendly asbestos-free gaskets, specialized rubber material products and parts insulation materials for pneumatic and hydraulic systems. Moreover, we have formed a complete set with many industries such as shipping, power, iron and steel, chemistry, and machinery for many successive years.
Certificate Of Honor
  • Asbetteros Free Gasket (1)
  • Asbetteros Free Gasket (2)
  • Black PTFE Packing (1)
  • Black PTFE Packing (2)
  • Corrugated Metal Gasket (1)
  • Corrugated Metal Gasket (2)
  • Graphite Composite Gasket (1)
  • Graphite Composite Gasket (2)
  • Graphite Ring Packing (1)
  • Graphite Ring Packing (2)
  • Graphite Spiral Wound Gasket (1)
  • Graphite Spiral Wound Gasket (2)