Do you know what factors should be considered in selecting O-ring? Here are O-ring manufacturers to give you a brief introduction, hoping to help you.

When selecting the O-ring specification, first determine the material of the O-ring. At present, the materials of the O-ring in industrial parts and life include NBR nitrile rubber, NR natural rubber, Cr neoprene, EPDM EPDM, HNBR hydrogenated nitrile rubber, silicome silica gel, FKM, Viton, fluororubber, FLS silicone fluororubber, PU polyurethane, SBR styrene butadiene rubber, Buna Buna rubber, acrylate rubber ACM, PTFE, polytetrafluoroethylene, etc. The above materials have their own destinations and uses, including oil resistance, chemical resistance, high and low temperature resistance, wear resistance, etc. Therefore, when selecting O-ring specifications, you must know where the product is used, what it needs to withstand, what role it plays, and its service life, so as to select the O-ring materials you need.

The specification tolerance of O-ring mainly includes inner diameter tolerance and line diameter tolerance. The specification tolerance of O-ring mainly depends on the size. The larger the size, the greater the tolerance. For example, the tolerance standard of O-ring with inner diameter of 0.05 to 1.79mm is +/-0.10mm, and the tolerance standard of O-ring with wire diameter of 0.05 to 1.79mm is +/-0.07mm.

When selecting the specification of O-ring, the compression amount is very important, because the selection is incorrect. Otherwise, it will not be sealed during product assembly, or it will be too tight during assembly, so it will not play the role required by the product. How can we correctly select the compression amount of the O-ring specification? Here is a reference for you: the compression amount of the O-ring generally depends on the hardness and material of the O-ring. If the hardness of the O-ring is 70 degrees, the compression amount of the O-ring is equal to 20%. Of course, the lower the hardness of the O-ring, the greater the compression of the O-ring. It is mainly used in low pressure places. The higher the hardness of the O-ring, the smaller the compression of the O-ring. It is mainly used in the environment with high pressure, pressure resistance and low resistance. By analogy, you can get the compression amount of any hardness O-ring you need.

The above introduces the factors to be considered in selecting the O-ring specification. I hope it can help you.