When selecting seals, only according to the size or color of the sample, it will only increase the difficulty of selection. You can choose seals in the following ways:
Running direction - determine the position and running direction of reciprocating, rotating, spiral or fixed working conditions such as seals.
Key sealing points - judge whether the movable point belongs to the rod seal with inner diameter or piston seal with outer diameter.
Temperature class - evaluate the working temperature of the component according to the actual working environment, and determine the manufacturing material of the seal.
Size - Because the original size of the seal will change due to temperature, pressure and wear after a certain period of use, the accuracy of measuring the size of the metal groove where the seal is installed will be higher.
Pressure rating - preliminarily infer the pressure rating in the working process of the original seal by observing its hardness and structure.