About Us


Sichuan Sunny Seal Co., Limited is the leader and the only listed company in domestic seal industry. From focused research to professional marketing and production, from single product to overall solution, we have forty years of inheritance and accumulation, based on strong technical strength, advanced equipments, ”Sunny Seal” is well known in China and gradually step into global market, strive to become a frist-class international brand.

Sunny Seal will always adhere to core values of “win-win, coordinated development”, take the customer’s demand as our duty, ensure the safety and protect the environment, make persistent efforts and meet the difficulties, take leaps in the course of development.

Glorious History

In 1978, The predecessor of the Sunny Seal "Sichuan Provincial Machinery Research & Design Institute Seal Technology Research Institute " is established.

In 1993, set up a joint venture“Sichuan Nikki Seal Co.,Ltd” with NIKKISO in Japan.

In 2008, the Japanese side quit, Sunny Seal change from a Sino foreign joint venture to a state-owned company.

In 2009, Sunny Seal became a relative state-owned holding company

In 2015, successfully listed on the Shenzhen gem, became the only listed company in dynamic seal industry.


The main products of us include mechanical seal, dry gas seal, auxiliary (control) system, rotary jet pump, rubber and plastic seal and so on. Sunny Seal also customize the whole solution of mechanical seal for different equipment and operating conditions.

The DGS and high performance seal which represented by high pressure, high temperature, high speed, large shaft size manufactured by us takes the largest market share in domestic market.

Sunny Seal has an experienced technology and management team and has established a nationwide marketing network and is moving towards the international market.


Our products are widely used in petrochemical, coal chemical, oil and gas transport, nuclear power, electricity, hydropower, pharmaceutical, metallurgy, food, shipping, aerospace, military industry and other industries, products are exported to Southeast Asia, Central Asia, the Middle East and other regions. And to ensure the safety, efficiency and environmental protection of customers, we can maximize the value of our customers.


Become the international first-class seal company.

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