Our PTFE Sealing Rings are manufactured from premium polytetrafluoroethylene (PTFE) material, known for its outstanding chemical resistance, low friction coefficient, and excellent temperature stability. The material maintains reliable sealing performance even under extreme chemical, thermal, and pressure conditions, making it ideal for applications in chemical processing, food, pharmaceutical, and mechanical industries.

We support full customization according to your requirements, including different shapes, dimensions, and composite structures (such as PTFE with bronze, glass fiber, or carbon fillers). Whether for static or dynamic sealing, we can provide precision-engineered PTFE seals to fit your specific applications.

Customizable Size Range

● Inner Diameter: 1mm – 5000mm (Extra-large sizes available upon request)

● Outer Diameter: 3mm – 5020mm

● Thickness: 0.5mm – 50mm

● Shapes: O-ring, rectangular, lip type, and customized profiles (available per drawing or sample)

Deeply rooted in sealing, leading the industry in valve fit: Founded in 2002 as "Lianyi Seals Factory," we have specialized in the production of PTFE seals for valves for over 20 years. In 2012, we expanded into full-service valve manufacturing. Leveraging years of accumulated sealing expertise, we achieve valve seal precision and valve body fit far exceeding industry standards.

Brass base material, ensuring quality from the source: 100% of the brass raw material used in our valves complies with national standards, strictly avoiding impurities. This core material ensures long-term stable operation of the valves, eliminating safety hazards and performance failures caused by base material issues.

Full-service chain, backed by over a decade of OEM/ODM experience: With over a decade of OEM and ODM experience, we offer a comprehensive service offering from product design and R&D to production and delivery. We precisely match customer needs and efficiently support the entire process, from solution implementation to delivery.