Description:Easy to use: Rubber hole plug has good sealing and corrosion resistance, which can effectively prevent liquid, gas, dust and water vapor from entering the pipeline or equipment. Also it is very suitable for use in special media such as acids.Material: The silicone plug is made of good quality silicone rubber material, which has good temperature resistance and can withstand high-temperature environments up to 250°C.High Stability: While the black silicone plug holes are very easy to install, they can also be adjusted with tools to ensure a tighter fit, increasing their firmness and durability.Easy to install: Normally, Placed by plug cover into a correspondingly sized sealed hole or pipe to complete the installation.Notes: All dimensions are measured manually and there may be small deviations.Feature:Material: Silicone rubberOuter Diameter: 15mm/0.59"Installation Diameter: 8mm/0.31"Total Height: 12.5mm/0.49"Installation Height: 9.2mm/0.36"Package Content: 16pcs x Rubber Hole Plugs