Overview of the World's Top Sealing Brands

A tribute to the global leaders in the sealing industry, and a big cheer for the thriving domestic Chinese brands!

Hello everyone! Let’s take a look at these world-renowned top sealing brands. How many of them do you know?

 A true hidden industry powerhouse. Its OmniSeal® spring-energized seals deliver exceptional performance in deep-sea and aerospace applications. For cryogenic liquid nitrogen valve projects, this is the go-to choice. With an operating temperature range from -270°C to +1010°C, its technology is truly industry-leading.

2，Flowserve, USA   A well-established veteran brand. Following the mergers of Durco and BW/IP, Flowserve boasts highly reliable cartridge mechanical seals widely applied in power and petrochemical industries. Its Suzhou facility has been recognized as a national "Specialized, Refined, Differential and Innovative Little Giant" enterprise, offering efficient delivery and thoughtful local services.

3，EagleBurgmann, Germany  It holds a dominant position in the chemical and pharmaceutical sectors. Its dry-running seals and agitator seals serve as a reliable solution for working conditions involving toxic, flammable and explosive media.

The brand provides integrated bearings and sealing solutions. Its Spectraseal engineered plastic seals and new-generation low-friction RSL/RSH seals are widely used in wind power and heavy-duty trucks, supported by sophisticated data-driven management systems.

5，John Crane, USA  The benchmark for mechanical seals. It has played a key role in formulating API standards. Many manufacturers directly adopt "JC Standard" on their drawings, making it a setter of industry norms.

6，Parker Hannifin, USA  A giant in motion control. Its O-rings hold a 65% global market share. Parker hydraulic and pneumatic seals can be found everywhere, ranging from automotive brake systems to hydraulic cylinders on excavators.

7，NOK, Japan  An invisible champion in the automotive industry. Though it has formed a joint venture with Freudenberg and rebranded as NFC, its profound expertise in precision sealing remains a core support for Japanese automakers.

A time-honored enterprise with over 170 years of history. NFC (NOK-Freudenberg) runs three major production bases in Wuxi, Changchun and Taicang across China. The group has made aggressive layouts in sealing products for new energy and hydrogen energy sectors, standing as a low-profile giant with a commanding market presence.

From precision seals for high-speed rail bearings to components operating under extreme conditions in aerospace, Chinese sealing technology has emerged as a group of invisible champions. It proves that genuine strength speaks for itself.

Focuses on sealing technology R&D and the production of high-quality sealing products. As a pioneer in domestic substitution, we strive to catch up with and surpass global counterparts in sealing solutions for extreme working conditions including ultra-high pressure, ultra-low temperature, high temperature and strong corrosion, and commit ourselves to manufacturing premium domestic products.

Kudos to all dedicated domestic brands!