The design of these plugs is explicitly intended for concealing countersinks and lead-in bevels in threaded holes. The inclusion of a pull tab feature enables the plug to be drawn downward,effectively decompressing the primary diameter, and creating a secure seal upon releasing the pull tab.
Temperature resistant up to 315 °C (600°F) Reusable and chemical resistant Material: Silicone / EPDM / Neoprene Rubber Color: See chart for colour coding