Sinoseal Holding Co., Ltd. engages in the research and development, manufacture, and sale of mechanical seals and their auxiliary systems in China and internationally. The company offers mechanical seals for pumps; dry gas seals for compressors; agitator mechanical seal; seal auxiliary systems for pumps; dry gas seal support systems for compressors; dry gas seal and support system for pipeline compressor; split mechanical seal; engineered seals; carbon ring seal; bearing protector; rotary jet pumps; seal intelligent monitoring system; sealing components; shield tunneling machine seal; seal manufacturing system; and sealing materials. It also provides training, maintenance and servicing, and on-site services. The company serves oil and gas, refinery, petrochemicals and chemicals, power, and other industries. The company was founded in 1993 and is based in Chengdu, China.