... Parts Brand Name: Jiushun Model Number: 58 mm Style: silica gel circle Products feature1,made of 100% silicone material 2,nontoxic ... good quality and a long service life. Product attributesNamesilica gel circleFull specifications20,25,32,47,58,70mmProduct size58mmFlanging Height11mm, ... resistance is more than 10 Europe.cm, breakdown voltage in 30 kv/mm above), corona resistance and arc resistance.