This Black Buna-N Rubber Push-In Grommet Bumper is designed for reliable wire, cable, and cord management in indoor applications. With an inner diameter of 3/16", this grommet securely fits into a 5/16" panel hole to provide protective insulation for cords or wires passing through metal or panel openings. Its medium hardness of Durometer 50A offers both flexibility and resilience, making it ideal for installations that need to accommodate vibration and movement. The Buna-N material provides superior temperature resistance, operating in a range from 0°F to 250°F, ensuring durability under various indoor conditions. Built to military standards with certifications such as AN931-A3-5 and NASM3036, this grommet meets rigorous specifications, making it suitable for precision applications. Perfect for use in electronics, machinery, and other enclosed environments, this push-in bumper is a dependable solution for securing and protecting cables in settings where outdoor exposure is not required. RGR31651618