Perhaps no such statistics can be obtained in the ED ring marketplace. Since different channels may be established by manufacturers. This shouldn't be a key if you think about whether to perform. As a purchaser, you are expected to do research into the market to work out the requirement. You might have design or own product idea. Then OEM/ODM should be found.

Suzhou Ultimate Sealing Technology Co.,Ltd. Seal is an expert maker of a wide range of various rubber parts. The rubber parts is one of the main products of Ultimate. Ultimate NBR ED ring complies with the most important European safety standards. These standards include EN standards and norms, REACH, TüV, FSC, and Oeko-Tex. The product is earth-friendly, low energy, and long-lasting, helping users save energy, replacement costs as well as cut electricity demand.

Since its inception, Ultimate Seal has been adhering to the 'sustainable innovation, the pursuit of excellence' spirit of enterprise. Ask!