Notes for production users: The general cause of seal damage is also related to the working requirements of the seal:
2026-01-08
1.Hardening(Aging)-One of the reasons for leakage in seals is that the material itself is hardened by temperature.When the hardness is too high,the seal cannot fill the gap between the mating parts,resulting in leakage.
2.Wear-The wear of seals involves the surface smoothness,movement speed,and transmission media of the mating parts,and different sealing materials adapt to different movement speeds.
3.Extrusion-When the seal is subjected to excessive pressure,it will be extruded into the metal gap,damaging the seal and causing leakage.This situation involves the hardness of the seal itself and whether the metal gap is too large.If not handled properly in design,selection,processing,or installation,extrusion damage can occur.
4.Corrosion-The manifestation is that the seal softens or even dissolves due to media intrusion and material selection errors.Special attention should be paid to media containing water or solvents.
5.Generally,seals can be classified into the following simple categories based on temperature,speed,pressure,and material(for reference only):
Temperature level applicable,material speed applicable,material pressure level applicable,material
110℃Nitrile Rubber/Polyurethane 0.5 M/S Nitrile Rubber 200kg/cm2 Combination Hardness and Design
200℃Fluororubber 0.6 M/S Polyurethane 400kg/cm2 Combination Hardness and Design
260℃Polytetrafluoroethylene 14 M/S Polytetrafluoroethylene 700kg/cm2 Combination Hardness and Design
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