We produce virgin PTFE, glass/ carbon/ bronze filled PTFE, expanded PTFE (ePTFE), FEP, and PFA in forms of sheets, rods, tubes, gaskets, films, and custom machined seals.
Our materials meet ISO 9001, FDA, RoHS, and REACH standards.
Since 2004, we have been supplying virgin & filled PTFE sheets, rods, tubes, gaskets, and custom machined seals to 100+ countries. Direct factory pricing, 15-day lead time for standard items.
Ningbo Kaxite Sealing Materials Co., Ltd.
Kaxite is a specialized PTFE manufacturer established in 2004, located in Ningbo, China. We produce virgin PTFE, glass/ carbon/ bronze filled PTFE, expanded PTFE (ePTFE), FEP, and PFA in forms of sheets, rods, tubes, gaskets, films, and custom machined seals. Our materials meet ISO 9001, FDA, RoHS, and REACH standards.
With 20+ years of formulation experience, we serve aerospace, chemical processing, semiconductor, food & beverage, and automotive industries. 80% of our production is exported to Europe, North America, and Southeast Asia.
View More
Explore Kaxite's premium PTFE, FEP, and PFA sealing products designed for demanding environments. From high-temperature gaskets to chemical-resistant seals, each solution is precision-engineered for industries like aerospace, automotive, and pharmaceuticals.
Address
No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
Need a custom PTFE part? Provide your dimensions, quantity, and application – we’ll reply within 4 hours with a drawing and quote.
Stay informed with Kaxite's latest updates and expert insights. Our blog offers technical articles, application guides, and industry trends.
30
2026-10
Expanded PTFE tape is designed to form a tight, leak-resistant seal on threaded connections without requiring an additional sealant. This article examines when expanded PTFE tape works on its own and when a compatible sealant may still be recommended for challenging conditions.
22
2026-10
This article explains the maximum working pressure of FEP tubing, covering how factors such as tube diameter, wall thickness, and operating temperature affect pressure limits and how to select the right tubing for safe use.
14
2026-10
PFA tubing is used in semiconductor applications because it offers exceptional chemical resistance, high purity, and thermal stability, allowing safe transport of aggressive chemicals and ultrapure fluids without contamination.
06
2026-10
PTFE has several drawbacks, including poor wear resistance, a tendency to creep under load, difficulty in bonding or welding, and the release of toxic fumes when overheated.
18
2026-09
FEP, or fluorinated ethylene propylene, is a melt-processable fluoropolymer known for excellent chemical resistance, high temperature tolerance, low friction, and electrical insulation. It is commonly used in wire and cable insulation, tubing, linings for pipes and tanks, medical device components, and other applications requiring durable, non-stick, and chemically inert materials.
07
2026-08
PTFE gaskets exhibit exceptional chemical resistance, compatible with nearly all acids, bases, solvents, and industrial chemicals, excluding only molten alkali metals and certain fluorinating agents under extreme conditions.
30
2026-07
PTFE Teflon film typically has an indefinite shelf life when kept in a cool, dry environment away from direct sunlight and contaminants. Its inherent chemical stability prevents degradation over time, though physical damage from improper handling or storage can affect performance.
22
2026-07
Different fillers can significantly affect the chemical resistance of PTFE compounds. This article explores how various filler materials perform in aggressive chemical environments, helping you choose the best option for your application.
14
2026-07
Discover the recommended cutting speeds and feed rates for machining PTFE, helping you achieve clean, accurate parts without melting or deforming the material.
06
2026-07
PTFE packing is widely used in valves, pumps, and other rotary or reciprocating equipment to provide a durable, leak-proof seal that resists aggressive chemicals, high temperatures, and friction.
26
2026-06
PTFE O-rings are manufactured in an extensive variety of sizes, encompassing standard AS568 inch-series dash numbers, widely used metric dimensions, and fully custom configurations to meet specific sealing requirements, with common cross-sections ranging from approximately 1 mm to over 10 mm and inner diameters available from a few millimeters up to several hundred millimeters.
18
2026-06
A PTFE ball typically has a density around 2.2 g/cm³, though the exact value can vary slightly based on the specific grade and manufacturing process of the polytetrafluoroethylene.
