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| Material: | PTFE |
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| Application: | Medical, Electronics, Chemical Industry |
| Certification: | RoHS, MSDS\Reach\FDA |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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PTFE can resist all other chemicals except molten sodium and liquid fluor, and can not change boiling in water.
It is widely used in all kinds of working conditions, such as acid and alkali resistance and organic solvent, sealing, high lubrication, non-stickiness, electrical insulation and good aging resistance, and has a long temperature resistance span (which can be used for a long time at 250 ºC to-180 ºC).
| Item | Unit | Value |
| Gravity | g/cm3 | 2.10-2.3 |
| Tensile Strength | MPa | more than 15 |
| Elongation Break | % | more than 150 |
| Dielectric Strength | Kv/mm | 10 |
Our service
Chunhuan Group (Zhenjiang Chunhuan Sealing Group Co., Ltd.), established in 1985, is a leading manufacturer of fluoroplastic products, chemical semiconductor linings, and new energy sealing gaskets. The company primarily focuses on the research, development, and production of fluoroplastic series sealing products (for hydrogen energy and nuclear power applications) and chemical semiconductor linings. With subsidiaries in South Korea and Shanghai, the group has also established a joint venture with South Korea's Houcheng Group for semiconductor lining equipment. Main production: PTFE products, metal seals series, steel lining anti-corrosion series, engineering plastics series,rubber products series,it is the leading enterprise in the national fluoroplastics industry. The company supplies more than 300 varieties of PTFE composite modified materials,ranging from standard composite modified materials (bronze,glass fiber,carbon,graphite,etc.) to customized solutions to meet different production needs of customers.The company provides flexible quantity and fast delivery service. The engineers have 35 years working experience in the field of PTFE,serving customers in more than 30 countries.
Q1: What material is this sliding block made of? Is it pure PTFE or filled?
A1: The standard product is made of high-purity polytetrafluoroethylene (PTFE) with excellent chemical inertness and low friction. For improved wear resistance or creep resistance, we can also add fillers such as glass fiber, carbon fiber, or bronze per your service conditions.
Q2: What are the advantages of CNC machining over conventional molding or turning? How is drilling accuracy ensured?
A2: CNC machining enables complex geometries, tight tolerances, and smooth surfaces, ensuring precise fit with mating parts. Drilling positions, diameters, and depths are accurately controlled per drawings, with tolerances up to ±0.05mm, and hole walls are smooth without burrs to avoid stress concentration.
Q3: What chemicals can this sliding block resist? Is it suitable for strong acids and alkalis?
A3: PTFE resists almost all chemicals. It is not recommended for molten alkali metals or strong oxidizing agents at high temperatures, but performs excellently in standard chemical anti-corrosion equipment.
Q4: What are the continuous operating temperature and maximum load capacity?
A4: Continuous service temperature ranges from -200°C to +260°C (short-term up to 300°C). Load capacity depends on size and mounting; typically static loads up to 20 MPa and dynamic loads ≤10 MPa for sliding supports. We can perform strength verification for your specific case.
Q5: Can dimensions (length, width, height) and drilling positions be customized? What drawing formats are accepted?
A5: Yes, fully customizable. You can specify any length, width, height, and hole layout. We accept 2D drawings (PDF/CAD) and 3D models (IGES/STEP); our engineering team provides free manufacturability review and optimization suggestions.
Q6: How is the sliding block installed? Are additional fasteners required?
A6: Installation depends on equipment design - typically bolted through the drilled holes or embedded into guide slots. We can machine countersinks, threaded holes, or dowel pin holes per your assembly requirements to fit standard fasteners or special connections.
Q7: What are the main application scenarios in chemical equipment? Can you give an example?
A7: Widely used in reactor agitator shaft supports, valve guide seats, pump slide plates, heat exchanger sliding supports, and pipe expansion joint guides. For instance, in an acid reactor, a PTFE sliding block replaces metal sliders to avoid corrosion and sticking, ensuring smooth agitator operation.
Q8: What are the key advantages over metal sliding blocks?
A8: PTFE is self-lubricating, oil-free, non-corrosive, and non-sticking, reducing maintenance. Its low friction lowers driving energy and does not wear counter-surfaces (e.g., stainless steel rails). In corrosive environments, its service life far exceeds that of metals.
Q9: Does this product meet ROHS and REACH regulations? Is it FDA-compliant?
A9: Pure PTFE meets ROHS and REACH, and MSDS is available. However, standard industrial-grade blocks are not for food contact. For FDA certification, we can use certified raw materials and issue a declaration upon request.
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