Expanded soft PTFE sheet 1mm~8mm

Our soft PTFE sheet is produced by a controlled expansion process of high-purity virgin PTFE, creating a highly fibrillated, multi-directional microstructure. This unique structure gives the material exceptional softness, high compressibility, low density, and outstanding recovery properties — characteristics that conventional solid PTFE sheets cannot achieve. The result is a gasket material that conforms easily to flange irregularities, fills surface imperfections, and achieves reliable sealing with significantly lower bolt torque than traditional PTFE or filled PTFE sheets.

 Product Specifications/Parameters 

• Standard Specifications:
• 1.5m x 4.5m / 1.5m x 1.5m
• Thickness: Up to 8mm
• Specific Gravity: 0.8g/cm³ ~ 0.85g/cm³
• Operating Temperature: -200℃ ~ +280℃

 Key Performance Features 

1. 1. Extremely soft and highly compressible (can compress >60–70% under moderate load)
2. 2. Excellent recovery and low creep under fluctuating temperature and pressure
3. 3. Outstanding resistance to all chemicals except molten alkali metals and elemental fluorine
4. 4. Low surface friction and non-stick surface
5. 5. Easy to cut with scissors, knife, or plotter — no specialized tools required

 Typical Applications 

• Flange gaskets for glass-lined reactors, FRP, PVC, and plastic piping systems
• Sealing of fragile or uneven flanges where high bolt load must be avoided
• Food & pharmaceutical equipment (FDA compliant grades available)
• Heat exchangers, agitators, and manhole covers
• Pump and valve bonnet gaskets
• Large-diameter flanges with low available bolt torque
• Applications requiring very low stress-to-seal performance
• Emergency repair and temporary sealing solutions

Because of its high conformability and forgiving nature, soft PTFE sheet is widely regarded as one of the most user-friendly and reliable universal gasket materials for demanding chemical and process industries.