Ningbo Rock Metal Product Co., Ltd.

Manufactures mechanical seals and seal materials for petrochemical equipment, paper and printing machinery, textile and dyeing production lines, and food processing applications. Its product offering covers cartridge seals, component seals, replacement mechanical seals for pump manufacturers, sealing materials, and sleeve, bearing, and bushing parts. Available sealing-material options include silicon carbide, carbon graphite and carbon fiber, tungsten carbide, ceramic, rubber, and stainless steel. Cartridge seals are standard designs intended for straightforward installation and use across varied operating duties.

The company provides seal identification, repair and refurbishing, and engineering and manufacturing services. Its seal identification work supports assessment of existing seals and upgrades where needed, while its 10-step refurbishing process restores mechanical seals. Buyers can submit a sample mechanical seal, drawing, or model for production. The business states that it has installed thousands of seals worldwide and has operated since its 2007 founding. Its cartridge seals are used in chemical, pulp and paper, power, food and beverage, mining, water and wastewater, and general industrial applications.