① when the cable accessories are installed, the cable insulation surface is always uneven after treatment,
It is not easy to make up the gap between ethylene propylene rubber products and cable insulation interface after being covered, which will reduce the performance.
Liquid silicone rubber product material is soft, after the suit, it can fill the gap of the interface and make up for the electrical defects caused by incomplete contact.

② the diameter difference between EPR cable accessories and cable outer diameter is about 5mm, while the allowable diameter difference of silicone rubber cable accessories can be more than 10 mm. The large diameter difference has the following advantages:

A. It can make up for the electrical defects caused by incomplete contact.

B. It can make up for the change of cable insulation outer diameter caused by temperature change. C. It can make up the gap caused by cable bending.

③ when rubber cable accessories are used, due to the deformation, there will be a kind of stress relaxation phenomenon. Compared with EPR, silicone rubber can bear 10 times of stress relaxation.

After 30 years, EPR decreased by 20%. Even if the diameter difference of silicone rubber was nearly twice, the stress relaxation after 30 years was basically unchanged.