Annual World Petrochemical Equipment Conference
2025 China International Petrochemical Technology and Equipment Exhibition
It will be held at the Shanghai New International Expo Center
The annual World Petrochemical Equipment Conference -2025 China International Petrochemical Technology and Equipment Exhibition (formerly the 17th Shanghai International Petrochemical Technology and Equipment Exhibition) will be held from June 5-7, 2025 at the Shanghai New International Expo Center. At present, the exhibition is attracting investment and the location is tight. Industry enterprises are requested to book as soon as possible!

Ningbo Dongheng Seal Co., Ltd. will showcase its latest products at the exhibition site (booth number E1922). Industry professionals are welcome to visit the exhibition site for exchange and cooperation negotiations!
企业简介
Ningbo Dongheng Sealing Parts Co., Ltd, mainly develops and produces various sealing materials and products. Our company's main products include metal wound gaskets, PTFE gaskets, graphite composite gaskets, metal toothed gaskets, ring gaskets, packing and automotive parts, etc. At present, the company has mature production technology in the field of sealing, and its products are widely used in industrial fields such as machinery, chemical industry, metallurgy, power, shipbuilding, food, aerospace, medicine, electronics, and automobiles.

The company has ISO9001 and special equipment testing certificates, and has over 20 years of production experience. Our company has various special materials inventory on metal winding pads, toothed pads, and ring pads, such as Monel, Inconel, Hastelloy, titanium, zirconium, and so on. We will rely on our high-quality products, strong technical strength, and excellent after-sales service to establish good cooperative relationships with our customers.
Product Recommendation

Metal wound gaskets are made by stacking V-shaped or W-shaped stainless steel strips and non-metallic fillers, spiral winding, and spot welding at the beginning and end. It has good compression elasticity and is suitable for sealing parts with severe temperature and pressure fluctuations. It is a static sealing element at flange connections such as pipelines, valves, pumps, heat exchangers, towers, manholes, and handholes. Widely used in sectors such as petrochemicals, machinery, electricity, metallurgy, shipbuilding, pharmaceuticals, atomic energy, and aerospace.

Graphite metal composite sealing gasket is made of pure graphite plate or high-strength stone composite plate punched with compression resilience and good strength. It is a sealing component for pipes, valves, pumps, pressure vessels, heat exchangers, condensers, and other applications. High strength graphite metal composite sealing gaskets can also be cut into complex sealing gaskets, which not only maintain the excellent performance of the original gasket, but also facilitate installation and disassembly, are not easily damaged, and can prevent the erosion of the gasket by the medium, thus improving the pressure resistance. The commonly used edging material is 304 or 316 stainless steel.

Various forms of high-precision CNC lathes mechanically cut various materials and produce solid metal ring gaskets and sealing gaskets through machining. Equipped with a small installation area and high preload pressure, they are applied to the high temperature, high pressure, and high corrosiveness of the environment inside the sealed pressure vessel, valve, and cylinder
Contact Information
Ningbo Dongheng Sealing Parts Co., Ltd
General Manager Gao Jiefeng
Mobile/Wechat/Whats app:+86 13566064802
Address: No. 79 Xinhua Road, Xiaolin Town, Cixi City, Zhejiang Province

