1, aging maintenance 
That is, there is no maintenance for silicone rubber and aging phenomenon, so that the silicone rubber is prone to deformation, silicone rubber if there is no complete aging maintenance, not only deformation, its service life and quality will be a substantial decline.
2, the content of silicone oil
Silicone oil content is in fact a direct decision on the quality of silicone rubber, if the silicone oil content in the processing stage to add too much, will lead to the viscosity of the silicone oil is too high, if it is to reduce the content of silicone oil, will lead to the quality of silicone is not good. Therefore, the content of silicone oil directly determines whether the silicone rubber is easy to deform, belonging to the quality aspect.
Reminder:Silicone oil in > <50%.
3, silicone rubber maintenance is not formal
Silicone rubber needs to be maintained to prevent deformation, but the maintenance is not formalized is also easy to lead to deformation, this is how? In the maintenance process, especially in the aging of the maintenance stage, if the silicone rubber abrasive has not been correctly fixed, the abrasive needs to be fixed with the outer abrasive or the inner abrasive bound together, so that you can completely prevent deformation phenomenon in the aging of the maintenance stage of the fixed.
What causes deformation of silicone rubber abrasives? These reasons are common factors that lead to deformation of silicone rubber, silicone rubber is generally well-maintained, correct use is not easy to deform, so pay attention to the details of the use, pay attention to the maintenance of silicone rubber can be avoided deformation occurs.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150A. 
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.