Silicon is certified by ROHS, which is environmentally friendly.
Silicon covers are soft with good toughness and elasticity to fit reducers.
Silicone terminal covers have high thermal stability from -40 to 230.
Silicone terminal covers have good electrical insulation and excellent water repellency, which is the high reliability for electrical equipment in wet conditions.
Silicone covers have a much longer service life than PVC ones.
Silicone material reaches UL-94V0 flammability rating.