What conditions must be met for a Nitrile rubber O-rings to qualify?

Nitrile rubber O-rings are widely used, and its working environment is also complex and diverse, which requires its compound to have some special properties. In the hydraulic system, to have good oil resistance, temperature resistance, low compression permanent deformation and a certain tensile strength. As a dynamic seal, in addition to the requirements, the compound should also have good wear resistance and tear resistance. For the sealing of special medium, the change of volume and hardness of rubber in the medium is less.

Nitrile rubber O-rings are suitable for all kinds of mechanical equipment, in the specified temperature, pressure, as well as different liquid and gas medium, static or moving state to play a sealing role. In sanitary ware, ships, automobiles, hardware, electronics, toys, electrical appliances, aerospace equipment, machinery, as well as various instruments and meters, a large number of applications of various types of sealing components. Nitrile rubber O-rings is mainly used for static seal and reciprocating seal. When used for Rotary Movement seal, it is limited to low speed rotary seal device. Nitrile rubber O-rings generally installed in the outer circle or internal circle cross-section of the rectangular groove to play a sealing role. Nitrile rubber O-rings in oil, acid, Alkali, grinding, chemical erosion and other environments still play a good seal, damping role. Therefore, the nitrile rubber O-rings is one of the most widely used seals in both hydraulic and pneumatic systems.

In general, the rubber formula is composed of raw rubber, vulcanized antioxidant reinforcing agent system, protective system, reinforcing system, softening system. The aim of formulation design is to seek the best combination of various compounding components so as to obtain good comprehensive performance. A good nitrile rubber has to meet these conditions:

1. First of all, must meet the performance requirements of the seal ring.

2. Secondly, the processing properties of the compound should be good.

3. In the premise of ensuring product quality, try to choose cheap, rich sources, non-toxic or low-toxic, stable performance of raw materials.