Although silica gel is non-toxic, it does not rule out the phenomenon of allergy after the first contact, but this is only a small number of people, and most people are not allergic to silica gel. You don't have to worry at all. Usually it will be fine in a few days. If it's still not good in a few days, you can get an industrial disinfection needle.
I wonder what technology is used to make the silicone sleeve over there. As far as I know, most silicone rubber sleeves are HTV high temperature vulcanized silicone rubber. If your factory also adopts this technology, the temperature of the working environment will inevitably be higher. Working in a high temperature environment for a long time is bound to sweat a lot. In addition, the high temperature in the working environment is inevitable. So it is recommended to take a towel with you. You can wipe your body with a towel when you go to work or go to the toilet. Keeping your body clean can also effectively avoid skin allergies.