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FEP film for gasket 0.25 0.5mm function FEP (Fluorinated Ethylene Propylene) film is a type of fluoropolymer known for its excellent chemical resistance, high thermal stability, low friction, and non-stick properties. When used as a gasket material in thicknesses like **0.25 mm** and **0.5 mm**, FEP film serves several important functions depending on the application environment. Here's a breakdown of its key functions:---### ✅ **Functions of FEP Film Gaskets (0.25 mm & 0.5 mm):**#### 1. **Sealing & Barrier Protection**- Acts as a **non-permeable seal** to prevent leakage of liquids, gases, or particulates.- Ideal for applications requiring clean, contamination-free environments (e.g., semiconductor manufacturing, pharmaceuticals).#### 2. **Chemical Resistance**- Resistant to a wide range of aggressive chemicals including acids, bases, solvents, and reactive gases.- Maintains integrity even when exposed to harsh cleaning agents (e.g., in cleanrooms or lab equipment).#### 3. **Thermal Stability**- Operates effectively over a broad temperature range: typically **-200°C to +200°C**.- Stable under repeated heating/cooling cycles—ideal for use in ovens, autoclaves, or cryogenic systems.#### 4. **Non-Stick & Low Friction Surface**- Prevents adhesion of materials (e.g., resins, polymers, biological samples).- Useful in processes involving sticky or viscous substances.#### 5. **Electrical Insulation**- Excellent dielectric properties make it suitable for electrical insulation in sensitive electronic components or connectors.#### 6. **Cleanability & Reusability**- Smooth, inert surface allows easy cleaning and sterilization (e.g., via autoclaving or UV treatment).- Can be reused multiple times in controlled environments without degradation.#### 7. **Dimensional Stability**- Minimal shrinkage or creep under pressure or temperature changes.- Maintains shape and sealing performance over time.---### ? Typical Applications:- **Semiconductor & Microelectronics:** Wafer handling, chamber seals, tooling.- **Pharmaceutical & Biotech:** Vials, syringes, bioreactor seals.- **Laboratory Equipment:** Reactors, chromatography systems, sample holders.- **Food Processing:** Non-toxic, FDA-compliant sealing where hygiene is critical.- **Industrial Machinery:** Seals in pumps, valves, and rotating joints.---### ? Thickness Considerations:| Thickness | Best Use Case ||---------|----------------|| **0.25 mm** | Thin, flexible seals; tight tolerances; minimal compression required || **0.5 mm** | Higher durability; better resilience under load; improved gap-filling capability |> Note: Thicker films (0.5 mm) offer more compression resistance and are better for uneven surfaces or higher pressure environments.---### ✅ Summary:FEP film gaskets at **0.25 mm and 0.5 mm thicknesses** provide reliable, chemically inert, thermally stable, and reusable sealing solutions—especially valuable in **high-purity, high-temperature, or corrosive environments** where traditional rubber or silicone gaskets would degrade.If you're selecting one, consider:- Operating temperature- Chemical exposure- Required compression force- Cleanroom (ISO Class) requirements- Regulatory compliance (e.g., FDA, USP Class VI)

Good quality PFA welding rod and solder strip were sold to Taiwan constantly Thanks for our Chinese Communist and Government! And Thanks for all our country people. With our Communist and Government's right Principles, policies and measures, Our China controlled COVID-19. So all people can work and live as usual! Union is strength! With the perfect and peaceful society environment, we can work happily and produce out safe ,good quality products. With above ,our Taiwan client ordered PFA welding rod and solder strips from us constantly. From November to December , they ordered 6 batches . Almost ten days an order . Perfect goods, fast delivery, Best cooperation friendship!

PVDF PIEZO films with silver were reordered again by Russia Client PVDF PIEZO film with Silver, Cu-Ni and Al. It can be made into kinds shape of high sensitive plastic sensors . Thin, light,hihg sensitive and shape free. PVDF PIEZO film is becomming more and more popular. It has been sold to many countries. Germany , Italy, Switherland , Korea ,Japan , Thailand ,Singapore ,Russia ,Canada etc, Many clients of the world ordered this kind of high technology PIEZO film . This month , Our Russia Client reordered the PIEZO film again . For new products, it need many new material . We are doing our test to offer more new materil to help to develop the world together !

Covin-19 is still spreading,Man is still strugling with it,Economic is still developping During the years of many troubles, all countries still have to develop Economic. PEACEFUL IS THE IMPORTANT! Mankind's peaceful life is the important! Economic developing is the important matter! Each country develops together is the Important! Stop war! Stop framing other countries, Some countries! Let's developping together! We, China, Always support to develop together with peaceful policy. Our high quality FEP 3D printing release film , FEP tape-casting film is supporting the economic developping too . Our FEP fillm is not only sold to America ,but also to Russia too. Our Russia client orders our FEP film every year for many years. This year, they didn't stop their steps, they are doing their best to develop the economic too. Let's develop together, all the countries who loves PEACE ! Prochema can offer kinds of FEP ,PFA, PCTFE, PVDF, PTFE,PEEK, PVF ,ECTFE and ETFE products. Prochema can offer PEM ,PFSA membrane and resins Prochema can offer Vanadium battery , Hydrogen battery too !

Width Developping of 3D printing , 3D printing release film is need more and more . Thus FEP film and NFEP film PFA film become the main materials of 3D Printing release film . With about 20 years experience of producing FEP film and PFA film. Our FEP film and PFA film win more and more clients in the world. During May , our Russia clients ordered FEP 3D printing release film after last months order. and quantity is not little. one time ,two clients ordered our FEP 3D printing release film at the same time . Thanks for their beliving and supporting! We will devote our goods to more and more markets in the world.

NEW EMI SHIELDING FILM FOR LCD- IRREGULAR METAL MESH FILM MIANYANG PROCHEMA starts marketing YD-160V1 optical EMI Shielding Film with irregular mesh. This film is with a conductive layer less than 0.5 ohm/sq deposited on PET film substrate, special aiming on LCD EMI shielding market with average 40dB anti electromagnet interruption. Currently most of metal mesh EMI shielding film is with square mesh, this needs to adjust angle on LCD display to prevent moire wave before lamination, this cause high failure rate risk and slow down the job speed. Prochema YD-160V1 is a film no need to adjust angle on LCD,just simply apply to the display without considering its direction. Thus to help clients fast job completion. The irregular metal mesh EMI film is supplied in sheet form 470*600mm at present, OCA coating is optional. Sheet size(L*W) 470*600mm Sq.Resistance ≤0.5 ohm Conductive layer OPI Cu metal mesh 160 OPI Mesh Wire Width 7±1um Mesh size 150um Pattern Irregular mesh hole VLT (T%) ≥85% YD-160V1 has very good dB shielding property, below is the test points record: Frequency 100M 450M 950M 3G 6G 10G dB EMI 60.8 61.6 54.6 48.4 37.6 30.2 We are actively developing larger size for applications other than LCD displays, for example MRI window, smart cooler glass RFID blocking etc. Prochema EMI SHIELDING FILM choices Item Number Substrate thickness Wire width VLT Haze Av.EMI Size OCA Backing YD-160V1 125um 7um >83% ≤2% >40dB 470*600mm Optional YD-250V1 (250 opi) Irregular Mesh 125UM 7um ≥80% ≤2% >40dB 470*600mm Optional MT150(150 opi) 125UM 17UM ≥76% ≤5% >50db 1.48*300m slitting service available With OCA MT85(85 opi) 125UM 15UM ≥80% ≤ 5% >40db Width 694mm roll With OCA ITO PET FILM 125/188UM 2-3 OHM >76% <3% 1250mm * length Optional ITO PET FILM 125/188UM 5-6 OHM >81% <3% 1250mm * length Optional ITO PET FILM 125/188UM 8-10 OHM >84% <3% 1250mm * length Optional ITO PET FILM 125UM 15-17 OHM 85% <3% 1250mm * length Optional

PTFE modified rod is welcomed by my Singapore client High quality , High properties. PTFE modified rod is welcomed by my Singapore client ! After China's Spring Festival Holidays. Our Singapore Semiconductor client put orders one by one to us . Now . PTFE modified ROD orders come again ! What does the PTFE modified rod is so welecomed? DF161 Polytetrafluoroethylene (PTFE) modified material is a high-performance polymer material with excellent characteristics and a wide range of applications. Some of the key characteristics of DF161 PTFE modified material include: 1. Excellent chemical resistance: DF161 PTFE modified material is highly resistant to chemicals, acids, and solvents, making it ideal for use in harsh environments. 2. Low friction coefficient: DF161 PTFE modified material has a low friction coefficient, which makes it suitable for use in applications where low friction is required, such as bearings and seals. 3. High temperature resistance: DF161 PTFE modified material can withstand high temperatures up to 260°C, making it suitable for use in high-temperature applications. 4. Excellent electrical insulation properties: DF161 PTFE modified material has excellent electrical insulation properties, making it ideal for use in electrical and electronic applications. Some of the common applications of DF161 PTFE modified material include: 1. Seals and gaskets: DF161 PTFE modified material is commonly used in seals and gaskets due to its excellent chemical resistance and low friction coefficient. 2. Bearings: DF161 PTFE modified material is used in bearings due to its low friction coefficient and high temperature resistance. 3. Electrical insulation: DF161 PTFE modified material is used in electrical insulation applications due to its excellent electrical insulation properties. 4. Automotive parts: DF161 PTFE modified material is used in automotive parts such as seals, gaskets, and bearings due to its excellent chemical resistance and high temperature resistance. Overall, DF161 PTFE modified material is a versatile and high-performance material that is widely used in various industries due to its excellent characteristics and wide range of applications. We can offer TFM1600 TFM1700 modified PTFE rod ,tube and sheet , also we can offer Japan Daikin M111 and China's DF161 PTFE modified material products. High properties, High quality brings high need !

Chinese DF28 series of chlor-alkali membranes are high-performance ion exchange membranes specifically designed for use in electrolysis processes in the chlor-alkali industry. These membranes are made from a special polymer material that provides excellent chemical resistance, high ion conductivity, and long-term stability in harsh operating conditions. The DF28 series membranes have a unique structure that allows for efficient transport of ions while preventing the passage of unwanted impurities, resulting in high purity and high efficiency in the production of chlorine, caustic soda, and other chlor-alkali products. These membranes are also highly durable and have a long service life, reducing maintenance costs and downtime. Overall, DF28 series of chlor-alkali membranes are a reliable and cost-effective solution for chlor-alkali producers looking to improve the performance and efficiency of their electrolysis processes. Bcs of high quallity and cheaper price than ther countries. our Argentina client sent us bigger order again ! High quality , warm service, suitable price ,Win-win is both aim. Welcome choosing Chinese PEM Chlor-alkaliv membrane! www.china-fluorine.cn

Chinese MODIFIED PTFE Rod is welcomed by Singapore Semiconductor field Our China's Modified PTFE are welcomed by more and more countries and plants. They order them constantly from us. Why ? Bcs : Introduction to the Application of Domestic Modified PTFE Domestic modified PTFE, also known as polytetrafluoroethylene, is a type of polymer material that has been modified to enhance its properties and expand its applications. This material is widely used in various industries due to its excellent chemical resistance, low friction coefficient, high temperature resistance, and electrical insulation properties. One of the main applications of domestic modified PTFE is in the manufacturing of sealing materials. Its chemical resistance allows it to effectively seal fluids and gases in various environments, making it ideal for use in gaskets, O-rings, and other sealing components. The low friction coefficient of modified PTFE also reduces wear and tear, extending the lifespan of the sealing materials. In the automotive industry, domestic modified PTFE is utilized in the production of engine components such as piston rings, valve seats, and bearings. The high temperature resistance of this material ensures that it can withstand the extreme conditions within an engine, providing reliable performance and durability. Another notable application of domestic modified PTFE is in the field of electrical insulation. Its excellent electrical insulation properties make it an ideal material for cable insulation, connectors, and other electrical components. The material's resistance to high temperatures and chemicals ensures the safety and reliability of electrical systems. In addition, domestic modified PTFE is widely used in the chemical industry for lining pipes, tanks, and other equipment that come into contact with corrosive substances. Its resistance to chemicals and high temperatures makes it an excellent choice for protecting equipment and preventing contamination. Overall, domestic modified PTFE is a versatile material that finds applications in various industries. Its unique combination of properties makes it an ideal choice for sealing, automotive, electrical, and chemical applications. The development and utilization of domestic modified PTFE have greatly contributed to the advancement of these industries in China.

Good quality products always bring countinous orders Just about one hour after we informed our Taiwan Client that the products had finished reporting to Customs in the morning , their second order came soon this month . This is just the charm of good quality products. Just keep working hard and control the products quality ! Offering better quality and better service is our Consistent Purpose! WORK HARD, OUR ALL STAFFS !

Imported PFA raw material, Perfect quality ,warm and attentive service. Perfect quality and service keep old clients. During this novel coronavirus spreads year, China controlled all successfully ,companies can work as usally ,companies and supply goods and service for the companies and people in the world. With our goods, our old client from Thailand won the biddings again ,and ordered the goods from us again! We will do our best to produce out quite good PFA welding rod from them and delivery the goods to them in time ! Supporting them is supporiting us! If you have any needs of fluoroplastic products, please don't hesitate to send orders to us,We won't stop our steps,we will working for you without any compaint !

To Dear Clients and Partners out of China: To celebrate ChINESE NEW YEAR, We decide to : 1. Shenzhen Factory Half time working from Jan 30-Feb 8, close Feb 8-21. 2. Mianyang office Close Feb 9-Feb 21 All deliveries may be a little delayed than before, and the freight cost is no sign to keep stable. We have made a certain of stock for films for any urgent delivery. Office people can be contacted at any time during holiday by emails or phone calls or wechat or whatsapp. For your convenience : 1. Conductive film inquiry/service linachen@itotop.com, market1@prochema.cn 2. Printing Film series market1@prochema.cn, market3@prochema.cn 3. Insulation PC,PP,PET film market1@prochema.cn, special@prochema.cn 4. Fluorine products FEP,PFA,ETFE,ION EXCHANGE etc market2@prochema.cn 5.Other products including display,touch solution and assistance to source within our commerce association members market1@prochema.cn Thanks for your interest in our company and our service, wish a NON-VIRUS 2021 AND WHOLE WORLD SAFE! HAPPY NEW YEAR TO YOU ALL! Mianyang Prochema Commercial Co.,Ltd.

Efficient work, efficient order A very kind Korea brother,talking like brothers in Wechat! Before our New Year Day Holidays, a new Korea Client find us,and hope to use our PFA film in 3D UV printer industry. Mr JIN want very transparent PFA film ,high UV transmittance.After confirm the picture ,thickness ,width ,then we decide to send the sample to him the second day . During the chatting time , we knew both are almost the same age ,and Mr Jin likes Chinese and can speak and read some Chinese. So sometimes I speak Chinese to him. Happy chatting lets be friends and call brother each other. The second day ,sample was sent him soon . About 3 days later, we made invoice and Mr Jin paid . Business began with happy steps ! Only you choose use, all will like to be our friends !

Worry about what clients worries , Think What clients think During New Year's Day holiday , we got our Americal old client's order. They need FEP film urgently ,and though the order is not big this time ,we consider what our client considers. With worker's hard work , today we perpared well all goods for our client ,and let the goods fly to our Client today ! Supporting is just when he needs, this supporting is the most important supporting !

With the developping of Greenenergy , With the developping of our company's tecknical and skills and markets promoting, Our companies Vanadium Batteries were sold to Iran Today . Pursue the peace, Pursue the environmental protection ! Let's cooperate hands by hands ,work together ,to build the peaceful and green world !

We are one of Chinese PEM AEM suppliers in China.  Our PEM can take the place of  Westerb Advanced country's some brand with lower cost to help your company save more cost . Our PEM are widely used by many Chinese facotries  and foreign companies abroad.  If you are insterested in our PEM ,Please don't hesitate to tell us when you are free.    How to choose Ion change membrane for producing sodium hypochlorite? 1.Three routes for producing sodium hypochlorite by electrolyzing brine: Membrane-free method (the simplest, but with low product concentration and many impurities) Diaphragm method (asbestos or polymer diaphragm, blocking gas but not selectively allowing ions to pass Ion-exchange membrane method (cation exchange membrane, selectively permeating Na⁺, blocking Cl⁻ and OH⁻, with high product concentration and good purity) 2.Selection of ion-exchange membranes The core uses Cation Exchange Membrane (CEM, Cation Exchange Membrane) Specifically, it is a perfluoride ion-exchange membrane, that is, a perfluorosulfonic acid membrane (PFSA/Nafion type) or a perfluorocarboxylic acid/sulfonic acid composite membrane Perfluorinated ion-exchange membranes for industrial chlor-alkali (such as DuPont Nafion, Asahi Kasei, Togo, etc.) For the sodium hypochlorite generator scenario, research indicates that perfluorosulfonic acid ion-exchange membranes (single-layer) should be used instead of perfluorosulfonic acid-perfluorocarboxylic acid composite membranes (the latter being more prone to foaming and damage). 3.Why choose cation exchange membranes Only Na⁺ (cations) are allowed to migrate from the anode chamber to the cathode chamber Prevent Cl⁻ from migrating to the cathode chamber and prevent OH⁻ from reverse-migrating to the anode chamber Prevent Cl₂ from reacting with NaOH in advance to form NaClO (if it is for the production of caustic soda, prevention is necessary, but in the production of sodium hypochlorite, it is actually Cl₂+NaOH→NaClO+NaCl+H₂O that occurs under controlled conditions). 4.Specific recommendations Industrial grade: Perfluorocarboxylic acid/sulfonic acid composite ion-exchange membranes (such as the Nafion series composite membranes used in the chlor-alkali industry - the perfluorocarboxylic acid layer on the surface faces the anode, and the perfluorosulfonic acid layer is in the middle), this is the standard for chlor-alkali However, for situations where sodium hypochlorite is specifically produced (unlike the production of caustic soda which requires extremely high alkali concentration), using a single-layer perfluorosulfonic acid film is actually more suitable - it has lower resistance and is less prone to foaming For small-scale or medium-scale trials, commercial Nafion membranes (such as N117) can be used.