Though we ensure a high pass rate of ED ring thanks to our strict quality control system, there may be some imperfections found owing to the minor incidents occurring during the shipment. In such cases, customers should take some photos of the product with a focus on the imperfections. Once we have confirmed the fact with you through email or phone, we will rapidly ship another product with premium quality to guarantee your interests. Customers can also check out our warranty policy to learn about our compensation terms and conditions.

Suzhou Ultimate Sealing Technology Co.,Ltd. Seal is a leader in manufacturing and exporting operations of rubber strip in China. Ultimate's Oil seal series contains multiple sub-products. The manufacture of Ultimate silicone o rings is strictly under control. Its quality is guaranteed by rigorous control and monitor of each production process, meeting the standards stipulated in the mechanical industry. This product is able to withstand years of uses. Its sturdy frame will not easily deform over the years and will not be vulnerable to warping or peeling.

FKM o ring is the core value of the brand Ultimate. Check it!