Conical Plugs (EPDM) are the most common and general masking plugs made of EPDM and suitable for use with screw sizes ranging from M5 to M20. Made with a tapered profile, Conical Plugs are solid, and able to seal holes from as small as 3.2mm up to 26mm. Use them for a peace of mind. Conical Plugs (EPDM) are suitable for holes with or without screw threads. Compared to silicone, Conical Plugs made from EPDM have a lower heat resistance, but are great for blasting applications. Buy a Conical Plug (EPDM) from your trusted supplier here in Singapore!