Hengshui Minai Rubber & Plastic Technology Co., Ltd. is one of the leading manufacturers and suppliers of tfe gasket in China. We are committed to providing high quality customized service and OEM/ODM service to global clients. Please feel free to wholesale bulk durable tfe gasket made in China here from our factory. If you have any enquiry about pricelist, please feel free to email us.
Products Description
This series of PTFE gaskets include virgin PTFE gaskets and filled modified PTFE gaskets, available in round, special-shaped and bolt-hole flange styles. Virgin PTFE is pressed from new pure resin without recycled materials for high cleanliness. Filled grades can be added with glass fiber, carbon powder or graphite to improve creep resistance and wear resistance and reduce cold flow under long-term compression. Finished gaskets feature uniform thickness, dense and flat surface without pores or delamination. They form a continuous sealing surface under compression and fit standard flanges and irregular equipment end faces. Working range covers cryogenic to high temperature conditions. Non-water-absorbent, non-adhesive to media and resistant to residue buildup, they withstand most corrosive fluids without swelling or dissolution. Supported by conventional cutting and precision CNC turning, non-standard shapes, thicknesses and holes can be customized according to drawings for static compression sealing of reactors, pipeline flanges, valve covers and tank connections.
Product Advantages
Extreme chemical inertness for full-range corrosion resistance
Resistant to nearly all strong acids, alkalis, oxidants and organic solvents including aqua regia and halide fluids. Suitable for corrosive pipeline sealing where rubber and ordinary plastic gaskets cannot be used.
Stable performance over wide temperature range, resistant to thermal cycling
Continuous working temperature
-200℃～260℃. No embrittlement at low temperature and no thermal decomposition at high temperature. It works reliably for cryogenic equipment and high-temperature steam pipelines without obvious sealing degradation under alternating hot and cold conditions.
Zero precipitation and high purity for sterile production
Virgin PTFE is non-toxic and compliant with FDA food contact standards. It does not absorb materials or release harmful substances, avoiding medium contamination during transportation of liquid medicine, food raw materials and high-purity reagents for pharmaceutical, food and semiconductor clean production lines.
Low friction & non-stick property for easy maintenance
Ultra-low surface friction coefficient prevents material adhesion. The gasket can be easily removed during equipment maintenance without residual glue or scaling, greatly reducing cleaning workload.
Multiple material options for different pressure requirements
We supply virgin PTFE and various filled modified grades. Virgin material focuses on high purity and corrosion resistance; modified reinforced versions improve compression resistance, anti-creep and wear performance, covering low-pressure clean service and medium-pressure industrial pipelines.
Manufacturer Capability
1.Complete material portfolio
Stock virgin PTFE sheets, rods and glass/carbon/graphite filled modified PTFE raw materials. We produce both pure and reinforced PTFE gaskets and provide professional material selection guidance based on working conditions.
2.Diversified processing capacity
Equipped with CNC lathes and precision cutting machines for standard gaskets, special-shaped gaskets and holed flange gaskets. Fast sampling according to drawings or samples. Accept small trial orders and mass bulk orders for equipment supporting projects.
3.Strict quality control
Raw material incoming inspection, batch sampling for finished products covering appearance, thickness and flatness. Material certificates and physical test reports can be provided. Tight dimensional tolerance control to avoid defects such as interlayer separation, pores and uneven thickness.
4.Flexible customization service
Support non-standard customization of thickness, inner/outer diameter and hole layout. Food-grade and anti-corrosion dedicated grades are available for long-term supporting supply for chemical projects, pharmaceutical machinery and new energy equipment manufacturers.
5.Reliable delivery system
Standard circular sizes are in stock for immediate shipment. Reasonable production cycle for non-standard orders. Support graded packaging and label matching, and cooperate with document requirements for foreign trade orders to guarantee stable supply for overseas projects.
Product Q&A
Q: What are the core differences between PTFE gaskets and rubber gaskets?
A: The core differences lie in medium resistance, temperature resistance and service life. PTFE gaskets are rigid inert sealing materials with strong corrosion resistance, ultra-wide temperature range, anti-aging, anti-swelling and zero precipitation performance, suitable for harsh working conditions such as chemical corrosion, high-temperature steam, low-temperature cold chain and food & medical cleanliness. Rubber gaskets are soft elastomers only applicable to normal-temperature, low-pressure, clean water and ordinary oil conditions, unable to resist strong acid, alkali and organic solvents. They are prone to aging relaxation at high temperatures and cracking at low temperatures, with easy leakage and failure after long-term use. PTFE gaskets are preferred for harsh industrial conditions and can completely replace traditional rubber gaskets.
Q: Will PTFE gaskets stick to flanges and be difficult to disassemble?
A: No. PTFE gaskets have excellent inherent non-stick and self-lubricating properties with smooth surfaces and ultra-low friction coefficient, hardly adhering to flange end faces or scaling during use. They can be easily disassembled during equipment maintenance without gasket residue or adhesion tearing, requiring no manual polishing and cleaning of flange surfaces, which greatly simplifies equipment maintenance procedures and saves operation costs.
Q: Can food-grade PTFE gaskets contact liquid medicine and drinking water?
A: Yes. High-purity food-grade PTFE gaskets are non-toxic, odorless and compliant with hygiene and safety standards with no harmful substance precipitation. They can be in direct contact with drinking water, purified water, liquid medicine, food raw materials and other media. Resistant to repeated high-temperature sterilization and boiling disinfection, they produce no precipitation, mildew or medium pollution during long-term use, serving as special sealing gaskets for pharmaceutical, water purification, food processing and sterile pipeline equipment.
