15% Glass-Filled PTFE Tube
Model:KXT GU980
15% glass-filled PTFE tube (model KXT GU980-15) is virgin PTFE reinforced with 15% glass fibre by weight. The glass filler raises compressive strength, stiffness, wear resistance and creep resistance well above virgin PTFE, while keeping the chemical resistance and electrical insulation of PTFE. Density 2.15–2.25 g/cm³, tensile strength 14–20 MPa, elongation above 180%, Shore D hardness 60–63, service temperature −200 °C to +260 °C. Outer diameter 6–200 mm, inner diameter 3–180 mm; custom sizes and inert-gas sintered versions available. ISO 9001 certified factory in Ningbo, China. Reply within 2 business hours.
What Is a 15% Glass-Filled PTFE Tube?
15% glass-filled PTFE tube (also called glass-filled PTFE tube, glass-fibre reinforced PTFE tube or KXT GU980-15) is a virgin PTFE tube reinforced with 15% glass fibre by weight. The glass filler increases compressive strength, stiffness, wear resistance and dimensional stability well above virgin PTFE, while keeping the chemical resistance and electrical insulation of the base polymer. 15% glass-filled PTFE tube is machined, moulded or extruded to the required outer diameter, inner diameter and length.
Glass fibre is used as a PTFE filler because it offers much improved compression and wear properties. The material may also be inert-gas sintered to further reduce porosity and gas permeability, with a consequent reduction in tensile properties. 15% glass-filled PTFE tube is available with outer diameter 6–200 mm and inner diameter 3–180 mm, with custom sizes and tolerances on request.
15% Glass-Filled PTFE Tube — Key Specifications
ModelKXT GU980-15
Material15% glass fibre + virgin PTFE
Specific Gravity2.15 – 2.25 g/cm³
Tensile Strength14 – 20 MPa
Elongation at BreakAbove 180 %
Shore D Hardness60 – 63
Service Temperature−200 °C to +260 °C
Outer Diameter6 – 200 mm
Inner Diameter3 – 180 mm
ColourWhite to off-white
Why Choose 15% Glass-Filled PTFE Tube
15% glass-filled PTFE tube is selected when pure PTFE tube does not provide enough stiffness, wear resistance or dimensional stability. The 15% glass-fibre content is a middle ground: enough filler to noticeably improve mechanical properties, but not so much that the material becomes brittle or loses its chemical resistance. Key advantages of 15% glass-filled PTFE tube include:
- Enhanced strength and stiffness — the glass fibre reinforcement raises compressive strength and rigidity compared with virgin PTFE.
- Very good electrical insulation properties — retained from the PTFE base polymer.
- Extremely good chemical resistance — resistant to almost all industrial chemicals, including strong acids and bases.
- Improved dimensional stability — lower thermal expansion and less creep under load.
- Enhanced creep resistance — holds shape under sustained compression at high temperature.
- Good sliding properties — low coefficient of friction retained from the PTFE base.
- Inert-gas sintered option — reduces porosity and gas permeability for high-vacuum or high-purity service.
15% Glass-Filled PTFE Tube — Technical Data Sheet
| Property | Test Method | Value |
|---|---|---|
| Specific Gravity | ASTM D4894 | 2.15 – 2.25 g/cm³ |
| Tensile Strength | ASTM D4894 | 14 – 20 MPa |
| Elongation at Break | ASTM D4894 | Above 180 % |
| Shore D Hardness | BS EN 13000-2 | 60 – 63 |
| Service Temperature Range | — | −200 °C to +260 °C |
| Material | — | 15% glass fibre + PTFE |
Values above are typical for the KXT GU980-15 family. Please request the current data sheet for the exact grade and tolerance you require.
15% Glass-Filled PTFE vs Virgin PTFE Tube
Buyers often compare 15% glass-filled PTFE tube with virgin PTFE tube. The table below summarises the main differences to help select the right material.
| Property | 15% Glass-Filled PTFE | Virgin PTFE |
|---|---|---|
| Compressive strength | Higher | Lower |
| Stiffness | Higher | Lower |
| Wear resistance | Improved | Moderate |
| Creep resistance | Enhanced | Lower |
| Dimensional stability | Improved | Moderate |
| Elongation | Slightly lower | Higher |
| Chemical resistance | Very good | Excellent |
| Food-contact suitability | Not recommended | Widely used |
For pure chemical resistance or food-contact service, choose virgin PTFE tube. For load-bearing, wear-resistant or high-precision mechanical parts, choose 15% glass-filled PTFE tube. See PTFE Tube for the full range including virgin, 5% glass, carbon, graphite and bronze-filled grades.
Typical Applications of 15% Glass-Filled PTFE Tube
15% glass-filled PTFE tube is specified wherever the chemical and electrical properties of PTFE must be combined with higher mechanical strength. Common applications include:
- Pump and instrument construction — bushings, liners and wear rings in chemical pumps.
- Food and medical technology — non-food-contact mechanical components and equipment housings.
- Chemical engineering parts — valve liners, seals and corrosion-resistant tubing.
- Electrical industry — high-frequency insulators, spacers and connector sleeves.
- Pump housings — bushings and bearings in chemical and process pumps.
- Shaft bearings — sleeve bearings in aggressive chemical or high-temperature environments.
- Valve seats — seats and seals in chemical valve assemblies.
Custom Fabrication & Ordering Options
We supply 15% glass-filled PTFE tube in the form that best fits your production line. Tell us the OD, ID, length and application and we will quote the closest standard size or a custom run.
| Option | Available Range |
|---|---|
| Form | Straight tube, cut-to-length tube, machined bushing, machined sleeve |
| Outer diameter | 6 – 200 mm (custom on request) |
| Inner diameter | 3 – 180 mm (custom on request) |
| Length | Custom cut-to-length or standard 1 m / 2 m lengths |
| Sintering | Standard or inert-gas sintered on request |
| Tolerance | To be confirmed against your drawing |
| Branding | Neutral packing or your own label — OEM / ODM welcome |
Send us a drawing, a sample or simply the OD/ID and application details and we will quote the most economical 15% glass-filled PTFE tube layout. Related grades: 5% Glass Fiber-Filled PTFE Tube, Carbon Fiber-Filled PTFE Tube, Graphite-Filled PTFE Tube.
Need a price for 15% glass-filled PTFE tube today? Tell us OD, ID, length and quantity — our technical sales team replies within 2 business hours.
Quality Assurance & Supplier Commitments
ISO 9001:2015Manufacturing under an ISO 9001 certified quality management system.
Material ListFull incoming material traceability: PTFE resin grade, glass fibre grade and batch number recorded.
Response SpeedTechnical sales team replies within 2 business hours for quotes and technical questions.
Batch TestingSpecific gravity, tensile strength, elongation and Shore D hardness tested per batch.
Third-Party InspectionSGS, BV, TÜV or your nominated inspector welcome before shipment.
Free SamplesFree short tube samples for evaluation; courier cost deductible from the first order.
Ordering, Packing & Delivery
| Item | Details |
|---|---|
| Minimum order quantity | 200 kg for standard sizes (negotiable for trial orders and mixed containers) |
| Sample policy | Free short tube samples for evaluation; buyer covers courier cost |
| Lead time | Typically 15 – 25 days after order confirmation; stock items ship faster |
| Packing | Tubes packed in protective sleeves, then in export cartons or plywood cases on pallets |
| Shipping | Sea, air or express; FOB Ningbo/Shanghai, CIF, DDP on request |
| Payment | T/T, L/C at sight, and other terms to be agreed |
| Documentation | Commercial invoice, packing list, bill of lading, certificate of origin, test report |
Lead times are indicative and confirmed per order.
Frequently Asked Questions
What is 15% glass-filled PTFE tube used for?
15% glass-filled PTFE tube is used where virgin PTFE needs improved stiffness, wear resistance and dimensional stability without losing its chemical resistance and electrical insulation. Typical applications include pump and instrument components, food and medical technology, chemical engineering parts, electrical insulation, pump housings, shaft bearings and valve seats.
What is the difference between 15% glass-filled PTFE and virgin PTFE?
Virgin PTFE has excellent chemical resistance and low friction but relatively low stiffness and high creep under sustained load. Adding 15% glass fibre increases compressive strength, stiffness, wear resistance and creep resistance while keeping most of the chemical and electrical properties of PTFE. The trade-off is slightly lower elongation and a rougher machined surface finish.
What is the service temperature range of 15% glass-filled PTFE tube?
The typical service temperature range is −200 °C to +260 °C, which is comparable to virgin PTFE. Short-term excursions above +260 °C should be avoided, and prolonged exposure to temperatures near the upper limit reduces mechanical properties over time.
Can the tube be inert-gas sintered?
Yes. Inert-gas sintering reduces porosity and gas permeability, which is useful in high-vacuum or high-purity applications. The trade-off is a modest reduction in tensile strength and elongation, so it is selected only when low permeability is more important than maximum mechanical strength.
What sizes of 15% glass-filled PTFE tube are available?
Standard outer diameters cover 6 mm to 200 mm and inner diameters cover 3 mm to 180 mm. Custom sizes, wall thicknesses and tolerances are available on request. Send us a drawing with OD, ID and length and we will confirm the closest standard size or quote a custom run.
Is 15% glass-filled PTFE tube food-contact safe?
Virgin PTFE is widely used in food and medical applications, but glass-filled PTFE is generally not recommended for direct food contact because the glass fibre may be exposed on the machined surface. For food-contact or medical use, choose virgin PTFE tube instead. Please confirm the specific end-use regulation with our engineers before ordering.
What is the MOQ and delivery time?
Standard MOQ is 200 kg, negotiable for trial orders and mixed containers. Production lead time is normally 15–25 days after order confirmation, and stock sizes can ship sooner.
Can I get a free sample before placing an order?
Yes. We provide free short tube samples for evaluation; the buyer covers the courier cost, which can be deducted from the first order. Send us your OD, ID, length and application details so we can send the most suitable sample.
Send your specification — get a quotation and a free sample Include OD, ID, length, quantity, sintering requirement and annual demand for the fastest response.
Technical review: This 15% glass-filled PTFE tube product page was reviewed by the Kaxite application engineering team.
Data sheet version: KXT GU980-15-2026-09. Specifications subject to change without notice.
Last reviewed: September 2026.
Data sheet version: KXT GU980-15-2026-09. Specifications subject to change without notice.
Last reviewed: September 2026.
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Contact Info
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Address
No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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