Common PTFE Semi-Finished Products Supplier in China

Taifno is a professional manufacturer of PTFE semi-finished products, offering items such as PTFE tubes, rods, sheets, skived sheets, and molded sheets. Suitable for a wide range of industries, these products feature excellent chemical resistance and a broad operating temperature range. We offer customization options to meet your specific project requirements.

What Are PTFE Semi-Finished Products?

PTFE semi-finished products are basic stock shapes manufactured from PTFE resin through molding, extrusion, or skiving processes. They serve as raw materials for producing seals, mechanical parts, anti-corrosion components, and electrical insulation parts across various industries.

Product Forms in This Category:

PTFE Tube (Hollow): Fluid transfer, wire insulation, pipe lining, heat exchangers

PTFE Rod (Solid): Machining precision parts — valve seats, seals, bearings, piston rings

PTFE Molded Sheet: Thick, dense sheet for heavy-duty seals, structural parts, bridge bearing pads

PTFE Skived Sheet: Thin, wide sheet for precision gaskets, insulation materials, anti-corrosion linings

The problem they solve: Chemical processing, semiconductor manufacturing, food processing, and pharmaceutical industries demand materials that resist aggressive chemicals, handle extreme temperatures (-180°C to +200°C), and provide low friction. Rubber degrades. Metal corrodes. PTFE solves all three.

Product Categories

PTFE Tube

Parameter	Description
Processes	Paste extrusion, ram extrusion, compression molding
OD Range	0.5mm to 2000mm
Wall Thickness	0.1mm to 500mm
Key Features	Hollow form — fluid passage, electrical insulation, chemical resistance
Best For	Corrosive fluid transfer, wire/cable insulation, heat exchanger tubing, pipe linings
Temperature	-180°C to +200°C

PTFE Rod

Parameter	Description
Processes	Paste extrusion, ram extrusion, compression molding
Diameter Range	2mm to 300mm
Key Features	Solid form — machining stock for precision parts
Best For	Valve seats, seals, bearings, piston rings, custom machined components
Temperature	-180°C to +200°C

PTFE Molded Sheet

Parameter	Description
Process	Compression molding + sintering
Thickness	2-100mm (up to 200mm available)
Size	Up to 2000×2000mm
Key Features	Dense structure, high mechanical strength, thick stock
Best For	Heavy-duty seals, structural parts, bridge bearing pads, machining blanks
Temperature	-180°C to +200°C

PTFE Skived Sheet

Parameter	Description
Process	Molding + sintering + rotary cutting (skiving)
Thickness	0.05-8mm
Width	Up to 2700mm
Key Features	Thin, precise tolerance, smooth surface, large width, can be rolled
Best For	Precision gaskets, electrical insulation, anti-corrosion linings, sealing tape
Temperature	-180°C to +200°C

Comparison & Selection Guide

PTFE Tube vs Rod

Feature	PTFE Tube	PTFE Rod
Form	Hollow	Solid
Primary Use	Fluid transfer, insulation	Machining precision parts
Machining Required	Cut to length	CNC turning/milling required
Applications	Piping, wire insulation, heat exchangers	Valve seats, seals, bearings, piston rings

Molded Sheet vs Skived Sheet

Feature	Molded Sheet	Skived Sheet
Process	Compression molding + sintering	Molding + sintering + skiving
Thickness	2-100mm (thick)	0.05-8mm (thin)
Width	≤2000mm	Up to 2700mm
Tolerance	Looser	Precise
Surface Finish	Good	Excellent — smooth
Form	Sheet only	Can be supplied in rolls
Best For	Structural parts, heavy-duty seals	Precision gaskets, insulation, linings

Quick Selection Guide

If Your Application Is...	Choose...	Reasons
Corrosive fluid transfer, wire insulation	PTFE Tube	Hollow — fluid/wire passage
Machined parts (valve seats, seals, bearings)	PTFE Rod	Solid — machining stock
Heavy-duty seals, structural parts, machining blanks	Molded Sheet	Thick, strong, dense structure
Precision gaskets, large width, insulation tape	Skived Sheet	Thin, wide, precise tolerance

Reference Applications Table

Industry	Application	Product Form
Chemical Processing	Corrosive fluid transfer, pipe linings, valve seats, gaskets, pump components	Tube, Rod, Sheet
Semiconductor	High-purity fluid handling, wafer carriers, seals	Tube, Rod, Sheet (high-purity)
Pharmaceutical	Sterile processing, bioreactors, FDA-compliant seals	Rod, Sheet (FDA grade)
Food & Beverage	Sanitary connections, FDA-compliant gaskets, anti-corrosion linings	Sheet, Tube (FDA grade)
Electrical & Electronics	Wire insulation, cable protection, high-frequency insulation parts	Tube, Rod, Skived Sheet
Aerospace	Fluid systems, electrical insulation, lightweight components	Tube, Rod
Mechanical Engineering	Bearings, bushings, slide plates, wear strips, bridge bearing pads	Rod, Molded Sheet
Oil & Gas	Valve seals, wellhead equipment, pipeline components	Rod, Tube

Key Benefits

1. Universal Chemical Resistance

PTFE resists almost all chemicals across pH 0-14, acids, alkalis, solvents, hydrocarbons, and more.

2. Wide Temperature Range

Continuous service from -180°C to +200°C, cryogenic to high-temperature applications.

3. Lowest Coefficient of Friction

Coefficient of friction as low as 0.04, self-lubricating, ideal for sliding applications.

4. Excellent Electrical Insulation

High dielectric strength, they are ideal for electrical and electronic applications.

5. Non-Stick Surface

PTFE semi-finished products prevent media adhesion and buildup, are easy to clean, and reduce contamination risk.

6. Versatile Processing

The products are available in multiple forms, such as machined, molded, extruded, and skived, to meet diverse application needs.

FAQ

Q: What is the difference between PTFE tube and PTFE rod? When should I use each?

A: PTFE tube is hollow, designed for fluid transfer, wire insulation, heat exchanger tubing, and applications requiring a passage through the center.

PTFE rod is solid, designed as a raw material for machining custom parts such as valve seats, seals, bearings, and piston rings.

Quick rule:

Need to convey fluids or run wires through it → Tube.

Need solid material to machine into a part → Rod.

Both share the same chemical and thermal properties, the difference is form and function.

Q: What is the difference between skived sheet and molded sheet? When should I use each?

A: Skived sheet is rotary cut from a molded PTFE billet. It produces thin sheets (0.05-8mm) with tight thickness tolerance, smooth surface, and large width (up to 2700mm). It is ideal for precision gaskets, insulation materials, and large flange gaskets.

Molded sheet is compression molded directly. It produces thick sheets (2-100mm) with dense structure and high mechanical strength, and ideal for heavy-duty seals, structural parts, bridge bearing pads, and machining blanks.

Quick rule:

Need thin, wide, precise thickness → Skived.

Need thick, strong, structural → Molded.

Q: What are the temperature and pressure limits for PTFE semi-finished products?

A: Temperature: Continuous service -180°C to +200°C, short-term up to +300°C.

Pressure: Tube positive pressure up to 1.6 MPa, vacuum up to 77 KPa (depends on wall thickness and diameter). Molded sheet pressure rating depends on thickness and gasket design.

Chemical: pH 0-14, not compatible with molten alkali metals or elemental fluorine.

Important note: PTFE is relatively soft, it may creep under high pressure and temperature. For high-pressure service, consider filled PTFE or metal-jacketed products.