First, determine the direction of movement. First determine the direction of movement of the location of the seal, such as reciprocating, rotating, screwing or fixing; Second, determine the key points of the seal. For example, determine whether the active point is a tie rod seal on the inner diameter or the active point is on the outer diameter Third, the temperature grade. Check the operating temperature from the original mechanical operating instructions or evaluate the working temperature according to the actual working environment, and determine the required materials. For the description of the temperature grade, please refer to the following precautions for production users; Fourth, Pressure level. Check the relevant data from the original mechanical operating instructions, or infer the working pressure level by observing the hardness and structure of the original seal. For the description of the pressure level, please refer to the following precautions for production users; Fifth, size. Most users will buy according to the old samples that have been used, but the original size of the seal will be greatly affected by factors such as temperature, pressure and wear after a period of use. It is the size of the metal groove that measures the location of the seal, and the accuracy will be higher. Company website: https://www.orksealing.com/