Well recognized and special developed composite process technology, applied to the body seal, located in the aircraft elevator and bullet fairing. For flange joint、landing gear


Yung Chi Rubber (YCR) is specialized in manufacturing and provide sealing solutions to automotive OEMs. Mold design and mold shop in house.
• Manufacture plants are certified by ISO 9001
• Pre-sale/sale/after-sales support: our sales / quality / R&D / Material engineers team with ability to communicate with customer engineers, provide relevant technical support such as product and material design, and also assist customers to develop professional seal solutions.

Hydraulic & Pneumatic

To satisfy the industries in fluid power transmission, Yung Chi offers the hydraulic and pneumatic seals including wiper seals, rod seals, piston seals, symmetrical rod/piston seals, and dampers. The field of application contains various cylinders, valves, pumps, pipes, automation, engineering equipment, and large construction machineries.
To fulfill the different operating environment, Yung Chi supplies the suitable elastomers, such as NBR, FKM, TPU, HNBR, and so on. Even though under the high or low temperature, or the high pressure, Yung Chi materials can meet the sealing demand of abrasion resistance, low friction, and low swelling, and keep a long-term sealing performance. Yung Chi is also well-experienced in developing the custom-molded parts and compounds to match the different requirement of customers.


Yung Chi Rubber (YCR) is specialized in manufacturing and provide sealing solutions to industry OEMs.

Oil ans gas industry

Yung Chi has developed several unique rapid gas decompression (RGD) resistant elastomer compounds for use in Oil & Gas applications and all have been independently tested & certified by Element Hitchin. Compounds are designed to withstand aggressive chemicals and gases over a wide temperature range while maintaining their sealing properties

Rapid Gas Decompression, RGD

Rapid Gas Decompression (RGD) is a phenomenon that can occur with a rubber sealing device when large pressure gradients exist between its interior and exterior sections. Due to pressure gradients, gas may diffuse or permeate out of elastomers when there is a rapid pressure drop. Therefore, to evaluate RGD resistant for O-Ring seals, we run tests to avoid the seal failure and seal leakage in the rapid pressure drop, the high temperature, high pressure, flammable and corrosion environment. RGD material is usually seen in Oil and Gas market, or in any application that a rapid drop in gas pressure may happen.

Water and food industries

Yung Chi concentrate a continually investment and development of Water & Food industries, and extend full ranges of related seals and customized parts.
We provide FDA, 3-A Sanitary Standards and various water certificated compound (NSF61, WRAS, ACS, KTW, W-270) to guarantee the safety of your specific application.

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