Improper use of moulded rubber o-rings from China manufacturer will accelerate its damage and lose its sealing function. Under the working conditions of high pressure and high temperature, the cause of the damage is the permanent deformation and the gap bite caused by being squeezed into the sealing gap, which shows a distorted appearance during movement. Let’s take a look at it briefly below!
1. Void bite
The sealed parts have poor geometric accuracy (including roundness, ovality, cylindricity, coaxiality, etc.), different parts, and the expansion of the inner diameter under high pressure, which will lead to the expansion of the sealing gap and the extrusion of the gap. aggravation of appearance.The hardness of moulded rubber o-rings from China manufacturer also has a significant effect on the appearance of void extrusion. The higher the pressure of the liquid or gas, the smaller the hardness, and the more severe the appearance of void extrusion.The way to prevent gap bites is to strictly control the hardness of the O-ring and the sealing gap. Use sealing material with suitable hardness to control the gap. Those with low hardness are used for low pressure, and those with high hardness are used for high pressure.Maintaining the retaining ring with a proper sealing ring is an effective way to prevent moulded rubber o-rings from China manufacturer being squeezed into the gap.

2. Abrasive wear appearance
When the sealed gap has relative motion, the dust and sand in the working environment are adhered to the surface of the piston rod, and are brought into the cylinder together with the oil film along with the reciprocating motion of the piston rod, and become intruded into moulded rubber o-rings from China manufacturer surface abrasive,Accelerates its wear, causing it to lose its seal. In order to prevent this from happening, a dust ring must be used at the outrigger shaft end of the reciprocating sealing device.