O-type rubber sealing ring is one of the commonly used sealing rings at present. Many people are not very clear about the material, hardness and other performance and technical requirements of the sealing ring when making choices. Next, Dongsheng sealing will tell you.

As rubber is an elastic material, it will deform under load, especially under high pressure, it will squeeze the sealing ring into the sealing gap, affect the floatability and make the sealing failure. Therefore, the hardness and section diameter of O-type rubber sealing ring should be reasonably selected according to the service pressure. Generally, the sealing ring with high hardness is selected at high pressure and the sealing ring with low hardness is selected at low pressure. The hardness of common rubber O-type rubber sealing ring is shore 70 ± 5.

The parting surface of abrasive tools for manufacturing O-ring for machine seal can bypass the excavation working faces on both sides and left and right sides as far as possible. Generally, 45 ° die out is selected to ensure excellent sealing performance. The cross section specification shall be symmetrical. The surface of O-type rubber sealing ring must be smooth and flat, and there shall be no irregularities, bubbles, residues and other defects.

Therefore, when selecting O-type rubber sealing ring, everyone is required to be determined according to their own working conditions. If it is difficult to select, you can consult the sealing ring manufacturer. Dongsheng sealing product R & D, production and manufacturing of 26 sealing ring manufacturers with working experience can select suitable sealing rings for customers' design schemes.