High Load Bearing Carbon Loaded Molded PTFE Tube for Compressor Piston Ring

Product Description

Product Description

We can supply PTFE products  filled with various other materials, such as bronze, carbon, glass fiber, and so on.

PTFE TUBE

1.Material:100% virgin PTFE,no recycle.
2.Certificate:ISO9001,MSDS,RoHs,REACH,FDA,Certificate of origin.
3.Own best performance,can be filled other material such as Bronze,Fiber glass,Carbon,Graphiteand so on.
4.Payment item:T/T,L/C,DP or others.
5.Price item: FOB,CIF,CFR and so on.
6.Delivery time: As your request,usually within 7days.
8.Free samples can be offered as your requirements.

Product description

SPECIFICATION

Item	Specification
	Outside diameter(mm)	Wall thickness (mm)	Length(mm)
Pressed Tube	1~25	0.1~2.5	As your requirement
Extruded Tube	12.4~213	1.5~15	As your requirement
Die Pressed Tube	30~2000	10~500	100~300

MAIN PROPERTIES

Our service

1. Your inquiry will be replied within 2 hours during working time, within 24hours when rest time.
2. Our working time is 7:30am-17:30pm, Monday to Saturday.
3. General samples time can be arranged within 2-5days.
4. Orders will be produced exactly as request and approved samples.
5. When mass production, we send photos to show the production line and confirm the estimate time again.
6. At the end of mass production, photos and samples will send to you for approval. You can arrange the inspection.
7. Before shipment, our QC will have inspection to make sure the quality
8. We always try best to ensure every order to delivery in time.

Payment Terms

1. T/T, Cash, L/C
2. 30% deposit, 70% balance before shipment.
3. Lead time: 15 days after received deposi for 2 tons.
4. Delivery way: By sea, By air, By EMS, DHL,UPS,TNT, FedEX.

Packing&Delivery
For sample:By EMS, DHL,UPS, TNT,FedEx
         Around 5-7 working days to arrive

For Bulk order

1. Qty of 2 tons within 15 days
2. Via sea
3. Delivery time: we finish production in 15 days for 2 tons
4. For 20 GP, may need around 30 days

Product Application

Company Profile

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.

Our Advantages

Certifications

Packaging & Shipping

FAQ

Q1: What is the main function of carbon filling in this PTFE tube for compressor piston rings?
A1: Carbon filling significantly enhances compressive strength, creep resistance, and wear resistance, maintaining dimensional stability under high-load reciprocating motion, which reduces wear and extends piston ring replacement intervals.

Q2: What is the load-bearing capacity of this molded PTFE tube?
A2: Carbon-filled molded PTFE achieves compressive strength above 30 MPa with minimal deformation under heavy loads, making it suitable for medium- to high-pressure compressors (e.g., discharge pressure 2-10 MPa). Specific ratings can be calculated based on wall thickness and dimensions.

Q3: Can it operate under oil-free lubrication conditions?
A3: Yes. The carbon-filled PTFE offers excellent self-lubrication with a low friction coefficient (approx. 0.15-0.25), maintaining low friction even in dry or boundary lubrication, effectively preventing scoring of the cylinder wall.

Q4: What is the continuous operating temperature range, and does performance change at high temperatures?
A4: Continuous service ranges from -200°C to +260°C. The carbon filler helps maintain rigidity and prevents softening at elevated temperatures, while the friction coefficient decreases as temperature rises, which helps reduce heat generation.

Q5: Which chemicals can it resist, and is it suitable for compressed air or industrial gases?
A5: The PTFE matrix resists almost all strong acids, alkalis, and organic solvents, and the carbon filling does not affect its chemical inertness. It is suitable for compressed air, carbon dioxide, and most chemical gases, but is not recommended for strong oxidizers at elevated temperatures.

Q6: Can the tube be directly machined into piston rings, or does it require further processing?
A6: The tube is ready for machining. We can also supply finished piston rings per your drawing, including cuts, chamfers, gaps, and radial grooves. Just provide your design, and we deliver ready-to-install parts.

Q7: What are the advantages and disadvantages compared to metal piston rings?
A7: Advantages include no cylinder wear, no metal debris contamination, self-lubrication allowing dry running, and excellent corrosion resistance for wet or aggressive gases. The main disadvantage is slightly lower load capacity than metal rings, so it is more suitable for medium-to-low pressure applications, but can be compensated with thicker walls or composite designs for higher pressures.

Q8: Is this product ROHS and REACH compliant, and can you provide relevant documentation?
A8: Yes, the carbon-filled PTFE material meets ROHS and REACH requirements. We can supply MSDS technical data sheets and declarations of conformity with each batch to facilitate your compliance for export markets.