Silicone Tapered Plugs

  • STP Silicone Tapered Plugs
  • Powdercoaters, anodizers and other metal finishers need a wide variety of 
                                            standard tapered plugs to mask the range of holes found on metal parts to be 
                                            finished. Viadon stocks plugs that can mask holes as small as 1/16 inch up to 4.75 inch 
                                            in diameter.
    Silicone Masking Plugs from 1/32 inch to 5 inch
  • STP Silicone Tapered Plugs
tapered plug diagram

Diagram of Dimensions for Tapered Plugs

STP series masking plugs, 600°F

The industry standard and most popular style of masking plug used in powder coating, plating, anodizing and Cerakote: Viadon’s silicone tapered plug. Ideal for blind holes, through holes, threaded holes or nearly any round opening that cannot have a coating applied. Flexible enough to mask slightly out-of-round holes too.

The fully cured, high temperature silicone rubber material withstands up to 600°F / 315°C. They will not leach into plating or anodizing tanks and are free of dye or colorings.

Not sure what size plugs you need? Download and print our free Tapered Plug Sizing Charts to select the right size plug, every time. Also use for identifying the part number of an unknown plug - just match up the top, bottom and length.

Custom sizes and shapes are available with low cost tooling. Contact Us today for a quote! Stock items are subject to availability, but are usually available for shipment within 24 hours.