Medical PTFE tubing is not simply industrial PTFE tubing made in a smaller diameter. For catheter liners, guidewire components and multi-lumen structures, the requirements extend to material selection, dimensional control, surface condition, clean manufacturing and traceability.

WITFLON's medical PTFE range includes precision catheter tubing, ultra-thin-wall PTFE liners, etched PTFE liners, multi-lumen tubing, PTFE heat-shrink tubing and guidewire-related products. Its published manufacturing information states that the company operates 2,000 m² of cleanroom space, has 12 medical-grade pipe production machines, and maintains ISO 13485 certification.

1. Is PTFE suitable for medical devices?

Yes. PTFE is used in medical devices where low friction, chemical resistance, dimensional stability and a smooth internal surface are important.

WITFLON specifically develops medical PTFE tubing for applications including:

Catheter systems

Endoscopic instruments

Laparoscopic devices

Minimally invasive medical devices

Guidewire systems

Fluid delivery

Irrigation and suction systems

The company's medical PTFE material information highlights its low coefficient of friction, chemical resistance, non-stick surface and resistance to high and low temperatures. (Hubei Zetai New Material Co., Ltd.)

The low-friction bore is particularly useful for catheter and guidewire applications where an internal component needs to move through the liner with limited resistance.

For medical-device manufacturers, however, material suitability should be assessed against the finished device, intended use, sterilization method and applicable regulatory requirements rather than treating "medical-grade PTFE" as an automatic approval for every device.

2. What medical grades are available?

WITFLON manufactures medical PTFE tubing using medical-grade, high-purity PTFE raw materials. Its medical product range includes several structures rather than a single universal "medical PTFE grade." (Hubei Zetai New Material Co., Ltd.)

Current product categories include:

Medical PTFE Multi-Lumen Tubing

Multiple independent channels are integrated into one tube.

Possible functions include:

• Guidewire passage
• Irrigation
• Suction
• Gas transmission
• Instrument operation

WITFLON states that it can mass-produce 8-lumen and 12-lumen tubes, while other lumen configurations can be customized according to the customer's design.

Ultra-Thin-Wall PTFE Liner

Used where the catheter structure has very limited space.

WITFLON currently lists an ultra-thin PTFE liner with wall thickness as low as 0.03 mm for a specific product.

Etched PTFE Liner

The PTFE surface is treated to improve bonding with another catheter material.

Medical PTFE Heat-Shrink Tubing

Used for covering, positioning and assembly of medical-device components.

PTFE Guidewire Products

WITFLON also lists PTFE-coated guidewire and related medical guidewire products.

For an OEM project, the correct material and structure should be selected according to the device design rather than simply ordering a generic "medical PTFE tube."

3. Can PTFE tubing be manufactured in a cleanroom?

Yes.

WITFLON states that its manufacturing facilities include 2,000 m² of cleanroom space, alongside dedicated medical-grade pipe production equipment. (Hubei Zetai New Material Co., Ltd.)

Cleanroom production is particularly relevant for:

• Catheter liners
• Multi-lumen medical tubing
• Ultra-thin-wall tubing
• Guidewire components
• Medical heat-shrink tubing

A clean manufacturing environment helps control airborne particles and contamination during production and handling.

For medical OEM projects, it is useful to confirm not only whether the supplier has a cleanroom, but also:

• Cleanroom classification
• Which production steps occur inside the cleanroom
• Cleaning procedures
• Packaging conditions
• Environmental monitoring
• Product handling procedures

WITFLON's website identifies cleanroom production as part of its medical tubing manufacturing capability.

4. Can you control ultra-thin wall thickness?

Yes.

Ultra-thin PTFE liners are one of the more technically demanding products in WITFLON's medical tubing range.

Its Ultrathin Teflon Tube PTFE Liner Precision Catheter is specified with wall thickness down to 0.03 mm for the listed product. 

WITFLON also lists an etched ultra-thin-wall PTFE liner with wall-thickness tolerance controlled to ±0.003 mm for that specific product. 

For ultra-thin tubing, control focuses on more than nominal wall thickness:

• Wall thickness uniformity
• ID
• OD
• Concentricity
• Surface condition
• Length
• Dimensional tolerance

The reason is straightforward: when the wall is only a few hundredths of a millimeter thick, a small dimensional change represents a significant percentage of the total wall.

For a custom project, the required minimum wall, average wall, tolerance and concentricity should be specified on the engineering drawing.

5. Can you manufacture multi-lumen tubing?

 

 

Yes.

WITFLON manufactures customized medical PTFE multi-lumen tubing using precision extrusion. The company states that the following can be customized:

• Number of lumens
• Lumen diameter
• Lumen position
• Overall OD
• Wall thickness
• Tube length
• Cross-sectional design

 

 

The current product information identifies 2-lumen, 3-lumen and multiple-lumen configurations, while WITFLON states that it mass-produces 8-lumen and 12-lumen tubes. (Hubei Zetai New Material Co., Ltd.)

Each lumen can be assigned a different function, such as:

Guidewire → Fluid Delivery → Suction → Gas → Instrument Passage

This allows several functions to be incorporated into one compact tube.

For a multi-lumen project, the engineering drawing should show the complete cross-section rather than only the overall OD.

Recommended Drawing Information

 

• Overall OD
• Lumen quantity
• Each lumen ID
• Lumen center position
• Wall between lumens
• Overall wall thickness
• Length
• Tolerance
• Surface requirement

WITFLON's published quality-control process includes lumen dimension measurement using optical projection or microscopic measurement equipment to verify lumen ID, wall thickness and concentricity.

6. Can PTFE medical tubing be sterilized?

Yes, depending on the specific tube design, material and sterilization process.

WITFLON's medical multi-lumen tubing specification lists:

EtO

Steam

as available sterilization methods. (Hubei Zetai New Material Co., Ltd.)

The appropriate sterilization method should be confirmed for the actual finished medical device.

Important factors include:

Sterilization temperature

Exposure time

Number of sterilization cycles

Tube wall thickness

Tube structure

Other materials in the device

Packaging system

For example, steam sterilization introduces considerably different thermal conditions from EtO sterilization. A medical OEM should therefore confirm sterilization compatibility during product development rather than after mass production begins.

For reusable devices, the number of expected sterilization cycles should also be specified.

7. What certifications are available?

WITFLON states that its quality system is certified to:

• ISO 13485
• IATF 16949
• ISO 14001
• ISO 45001

The company also states that its products comply with RoHS and REACH, while its medical products are associated with FDA-related requirements and biocompatibility standards. Its website specifically states that PTFE medical tubing has passed biocompatibility testing. (Hubei Zetai New Material Co., Ltd.)

For medical procurement, it is important to distinguish between:

Company certification

and

Product-specific compliance or test evidence.

ISO 13485 demonstrates a medical-device quality management system. It does not by itself mean that every tube is approved for every medical application.

Depending on the project, the buyer may need:

ISO 13485 certificate

Material certificate

Biocompatibility test report

Sterilization compatibility information

RoHS / REACH documentation

FDA-related documentation where applicable

Inspection report

Certificate of Conformity

Batch traceability records

The exact documentation package should be agreed before production.

8. Can medical tubing be customized from drawings?

Yes. This is one of WITFLON's main medical tubing capabilities.

The company states that its medical custom PTFE multi-lumen tubing is manufactured according to customer drawings or technical specifications. 

The drawing can define:

Tube Dimensions

• ID
• OD
• Wall thickness
• Length
• Tolerance

Internal Structure

• Number of lumens
• Lumen ID
• Lumen location
• Lumen shape
• Wall between lumens

Surface Treatment

• Smooth bore
• Etched surface
• Special surface requirements

End Configuration

Straight cut

Tapered section

Special end treatment

For an OEM medical project, WITFLON recommends providing the product drawing, material requirements, tube dimensions, annual demand and application information when requesting a quotation. 

Custom Medical Tubing Development Flow

Customer Drawing

↓

Engineering Review

↓

Material Confirmation

↓

Tooling / Process Design

↓

Prototype

↓

Dimensional Inspection

↓

Sample Approval

↓

Production

↓

Final Inspection

↓

Batch Traceability

↓

Packaging

This approach is particularly useful for catheter manufacturers because the tubing is often one component within a larger device rather than a standalone finished product.

Medical PTFE Tubing: What Should the Buyer Provide?

For a quotation, sending only "medical PTFE tube, 2 mm OD" is usually not enough.

A useful RFQ should include:

WITFLON's published multi-lumen specification gives a dimensional tolerance of ±0.03 mm to ±0.05 mm for the relevant product, while its ultra-thin-wall product lists substantially tighter wall-thickness control. These should be treated as product-specific published capabilities, not a universal tolerance applicable to every medical PTFE tube.

Medical PTFE Tubing Manufacturing Capability

WITFLON's medical tubing capability is supported by a dedicated manufacturing infrastructure rather than only catalogue trading. The company reports:

• 10,000+ m² production facilities
• 2,000 m² cleanrooms
• 12 medical-grade pipe production machines
• 45+ extrusion production lines
• 5 senior engineers + 5 technicians
• ISO 13485 certification

Medical PTFE biocompatibility testing

Standard and custom production lines

The product range also gives a useful indication of the manufacturing scope: multi-lumen tubes, etched liners, ultra-thin-wall liners, precision catheters, heat-shrink tubing and guidewire products are all currently listed on the WITFLON site.

Request a Custom Medical PTFE Tubing Sample

For an OEM medical tubing project, the most useful starting point is a drawing plus application information.

Send:

ID + OD + Wall Thickness + Length + Tolerance + Material + Lumen Structure + Application + Sterilization Method

If the tube is a multi-lumen or ultra-thin-wall design, include the complete cross-sectional drawing and identify the critical dimensions.

WITFLON's current medical tubing range and manufacturing information support customized PTFE tubing development for medical-device OEMs, including multi-lumen, ultra-thin-wall and etched-liner structures.