We offer many specs of white ceramic seal rings.

Material: 95%~99.5% alumina.
Size: According customers' request
Price: According to different size, materials, orders

The frictional times is 300, 000 to 500, 000, the density is3.6~3.7g/cubic centimeter, the rigidity is 84~86 HRA, the thickness tolerance is less than 0.02mm, the diameter tolerance is less than 0.02mm, meanwhile, we can manufacture according to customers' drawings or samples.

We have both cheaper price and higher quality than any other companies as we are both manufacturer and exporter...