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Zhejiang Smart Sealing Co., Ltd. – Leading manufacturer of industrial seals, packings, gaskets, PTFE products, lapping machines, and precision etching shims in China. Trusted by global partners for over a decade.
Explore Our Products
Zhejiang Smart Sealing Co., Ltd. is a professional manufacturer located in Hangzhou, Zhejiang, China — just minutes from the scenic West Lake and Hangzhou International Airport. Our strategic location ensures fast logistics and seamless global delivery.
We specialize in the design and production of high-performance sealing components including spiral wound gaskets, metal jacketed gaskets, PTFE packings, graphite seals, non-asbestos sheets, rubber gaskets, and precision etching shims. Our advanced machinery line supports both in-house manufacturing and OEM solutions.
With a strong focus on innovation and quality control, we serve industries such as oil & gas, chemical processing, power generation, automotive, and aerospace. Our products meet international standards and are exported to over 50 countries.
State-of-the-art manufacturing facility in Hangzhou, China
From sealing materials to fully automated machinery, we offer a comprehensive range of industrial solutions designed for durability, precision, and performance.
Improved model with PLC size control and automatic spot welding. Suitable for ID 300mm–3200mm spiral wound gaskets. Supports 4.5mm thickness (also 3.2mm, 6.4mm, 7.2mm with roller change).
Machines for Gaskets
Newest design with full automation: PLC size control, SS strip forming roller, automatic spot welding, and automatic SS strip cutting. Top-tier performance in China.
Sealing Machinery
High-precision machine for surface finishing of sealing rings and components. Ensures flatness and smooth finish for optimal sealing performance.
Lapping Equipment
High-strength, chemically resistant yarn ideal for braided packings and seals in aggressive environments. Excellent thermal stability up to 260°C.
Raw Material
Flexible, non-stick tape/rope for pipe thread sealing. Resistant to extreme temperatures and corrosive chemicals. Ideal for maintenance and OEM applications.
PTFE Product
Semi-automatic horizontal ring bending machine for SWG inner and outer rings. Features PLC size control and automatic cutter for fast, continuous processing.
Gasket Machinery
Designed to polish the surface of spiral wound gasket inner and outer rings. Ensures smooth finish and dimensional accuracy for critical sealing applications.
Finishing Equipment
Precision stainless steel U-slotted shims used primarily for wheel alignment. Available in various thicknesses with high corrosion resistance and durability.
Etching Shims
Vacuum packages small gaskets in a clean, convenient, and visually appealing way. Customizable film width based on customer requirements.
Packaging Solution
High-performance flexible graphite packings for pumps, valves, and rotating equipment. Excellent thermal conductivity and chemical resistance.
Sealing MaterialsWe combine cutting-edge technology, strict quality control, and customer-first service to deliver reliable sealing solutions worldwide.
All products undergo rigorous testing and meet international standards including ISO, API, and ASME. Full traceability and documentation provided.
Strategically located near Hangzhou International Airport for rapid export. DHL, FedEx, and sea freight options available.
We support custom designs, private labeling, and engineering collaboration. From prototype to mass production — we’ve got you covered.
Our factory is located in Yanghu Industrial Zone, Xiaoshan, Hangzhou, Zhejiang, China — just 30 minutes from Hangzhou International Airport.
Yes, we provide full OEM and ODM services including custom packaging, branding, and product design based on your specifications.
Our products are exported to North America, Europe, Southeast Asia, the Middle East, and Australia.
Yes, we offer free samples for qualified buyers. Shipping costs may apply depending on destination.
We accept T/T (Telegraphic Transfer), L/C (Letter of Credit), and Western Union. Terms negotiable based on order volume.
Reach out to our team for product inquiries, technical support, or partnership opportunities.
Company: Zhejiang Smart Sealing Co., Ltd.
Address: Yanghu Industrial Zone, Xiaoshan, Hangzhou, 311201, Zhejiang, China
Phone: 0086-571-82769011
Mobile: 0086-13758127676 (Jessica Chen)
Email: sales@smartsealing.com
Alternate Email: jessica_chen25@163.com
Website: www.smartsealing.com
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