Product Description: Name: Rubber gasket Meterial: New synthetic rubber Color: Black Size: 4*7mm-25*30mm Specification: Eg.4*7mm(Inner Diameter=4mm, Plate Hole=7mm). Environmental protection level: E1-E3 Hardness degree: 30-100 degree Temperature resistance:-60℃-250℃ Features: high elasticity, insulation, air-water tightness, wear resistance, oil resistance, corrosion resistance, antistatic and other excellent properties. Purpose: Suitable for high and low voltage electrical cabinets, boxes, outlets, etc., to protect wires from scratches on the cabinet or box