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The company specializes in the field of mechanical seals, offering a product portfolio that includes seals for industrial pumps and agitators, as well as cartridge seals and metal bellows seals.
These products serve a wide range of industries, including petroleum, chemicals, oil refining, pharmaceuticals, power generation, and automotive manufacturing. Leveraging deep expertise in materials science and sealing technology, Hange provides customized sealing solutions tailored to specific operating conditions.

To address the high-temperature, high-pressure, and corrosive media encountered during crude oil extraction, transport, and refining, Ruida provides mechanical seals made from high-performance materials such as silicon carbide and tungsten carbide. These ensure long-term, stable equipment operation

Chemical production involves corrosive media such as strong acids, strong alkalis, and organic solvents. Ruida's sealing products utilize corrosion-resistant materials like PTFE and expanded graphite, maintaining excellent sealing performance in extreme chemical environments and ensuring production

Pharmaceutical manufacturing demands exceptional equipment cleanliness and sealing reliability. Ruida offers sanitary-grade sealing solutions that eliminate the risk of cross-contamination, helping clients achieve certifications such as GMP.

Pump sets and turbine equipment in thermal, nuclear, and new energy sectors require highly durable seals. Ruida's products, such as metal bellows seals, perform exceptionally well under high-temperature and high-pressure conditions, ensuring the safe, long-term operation of power facilities.

Ruida supplies specialized lip seals and mechanical seals for automotive cooling pumps and air conditioning compressors. With an operating temperature range of -30°C to +200°C, these products meet the powertrain requirements of various vehicle models.

The pulp media used in papermaking is highly abrasive. Ruida's highly wear-resistant sealing products effectively extend equipment maintenance intervals and reduce downtime losses, creating sustained economic value for clients.

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