Fire protection sleeve for plastic pipe 600600

Natural Nylon Flat Washer - 4.3 mm | 0.169 in Inside Diameter, 8.0 mm | 0.315 in Outside Diameter This Nylon washer has an outside diameter of 8.0 mm | 0.315 in and a thickness of 0.8 mm | 0.031 in. They insulate against moisture and electricity, resist corrosion, abrasion and most chemicals and provide full insulation, cushioning and spacing.