We source premium PTFE resin from global top brands, ensuring superior chemical stability and mechanical strength.
Proprietary bi-axial stretching creates a micro-fibrous structure for excellent flexibility and sealing performance.
ISO 9001:2015 certified. Rigorous testing on density, tensile strength, and compression set at every stage.
20+ years of sealing industry experience. We provide professional material selection and engineering support.
Standard products shipped within 3 days. Custom orders delivered in 7–15 days with efficient production management.
FDA, UL, and DVGW approved. Meeting strict standards for food, gas, and semiconductor industries.
Custom sizes, thicknesses, and shapes. One-stop service from design drawing to mold development.
Committed to sustainable sealing. All products comply with RoHS and REACH environmental regulations.
Kaxite products meet the most rigorous international requirements
Kaxite expanded PTFE products are trusted in demanding applications worldwide
Get a free sample and tailored quote within 24 hours.
Quick answers to the most common questions about our expanded PTFE products and services.
Quick reference for material properties and performance data
-200°C to +260°C
Continuous service temperature, peak up to 300°C
pH 0 – 14
Inert to virtually all chemicals except molten alkali metals
0.5 – 50 mm
Sheet thickness, custom dimensions up to 1500×1500 mm
ISO 9001 · FDA · USP VI · RoHS · REACH
DVGW gas-grade and UL recognized options available
3 – 15 Days
3–5 days for stock items, 7–15 days for custom orders
40+ Countries
Global shipping via sea, air, DHL, UPS, FedEx
Ningbo Kaxite Sealing Materials Co., Ltd. is a professional manufacturer and supplier of premium expanded PTFE products, headquartered in Ningbo, Zhejiang Province – one of China's most dynamic industrial and export hubs. With over 20 years of dedicated experience in the sealing industry, Kaxite has grown into a trusted partner for industrial clients across more than 40 countries worldwide.
Our core expertise lies in the research, development, and production of high-performance expanded PTFE materials – including sheets, tapes, gaskets, rods, and tubes. Through proprietary bi-axial stretching technology, we convert virgin PTFE resin into a micro-porous, fibrous structure that delivers superior sealing performance, chemical resistance, and conformability to irregular flange surfaces. Our products are widely used in chemical processing, pharmaceutical, food & beverage, semiconductor, oil & gas, and aerospace industries.
Kaxite operates under a strict ISO 9001:2015 quality management system. Our products comply with international standards including FDA 21 CFR 177.1550, USP Class VI, RoHS, REACH, and DVGW for gas applications. We are committed to delivering consistent quality, on-time delivery, and responsive technical support – from material selection and custom design to after-sales service.
With an experienced R&D team, flexible production capabilities, and a customer-first mindset, Kaxite is dedicated to providing tailored sealing solutions that create lasting value for our partners. We welcome inquiries for standard products, custom orders, and OEM projects – and we offer free samples to help you qualify our quality before you commit.