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STP-H - Silicone Tapered Plugs with Handle

  • STP-H Silicone Tapered Plugs with Handle
  • 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
  • Masking Block STP-H Silicone Tapered Plugs with Handle
STP-H silicone tapered plug with handle diagram

Diagram of Dimensions for Tapered Plugs with Handle

Silicone Tapered Plugs with Handle, 600°F (powder coating, e-coating, anodizing, plating, painting, and thermal spray applications)

Viadon's Silicone Tapered Plugs with Handle (STP-H) make plugging small holes faster and easier. The added length allows for fingers large and small to quickly grasp the handle and insert / remove these smaller plugs. The handle also allows a quick "twist" to push plugs in a bit further and with more friction, helping to avoid blowouts in components that are heated and trap air beneath the plugs. Made from fully cured silicone to avoid leaching into plating tanks, tapered plugs are perfect for just about any metal finishing situation, including powder coating, e-coating, plating, and anodizing.

These plugs can withstand temperatures up to 600°F / 315°C and are clear so they contain no potentially harmful coloring agents.

Not sure what size plugs you need? Check out our free, downloadable Tapered Plug Sizing Charts.

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.

  • Available Parts
    Part #             Color         Bottom Dia. (in.) Top Dia. (in.) Length (in.) Plugs / Bag Quantity (bags)  
    STP99-H Clear 0.031 0.125 0.625 1000 Add to Shopping List
    STP100-H Clear 0.062 0.125 0.625 1000 Add to Shopping List
    STP101-H Clear 0.062 0.187 0.625 1000 Add to Shopping List
    STP102-H Clear 0.125 0.250 0.750 1000 Add to Shopping List
    STP103-H Clear 0.187 0.343 0.625 500 Add to Shopping List
    STP104-H Clear 0.250 0.375 0.750 250 Add to Shopping List
    STP105-H Clear 0.250 0.375 0.500 500 Add to Shopping List
    STP000-H Clear 0.344 0.469 0.812 100 Add to Shopping List
    STP00-H Clear 0.406 0.594 1.000 100 Add to Shopping List

     

    Custom sizes and shapes are available. Contact Viadon for a quote.

    Not sure what size plugs you need? Check out our free, downloadable Tapered Plug Sizing Charts

    Note: Not all of the very large sizes are available for sampling - Contact Viadon for more information.

  • Technical Specifications
    • Temperature Range: Up to 600°F/315°C
    • Typical Uses: Masking threaded holes and straight-walled holes with a small chamfered area at the entrance. Ideal for powder coating, wet spray painting, e-coating, plating, and anodizing.
    • Material: Silicone
    • Color: Clear translucent; yellow
    • Excellent heat resistance.
    • Re-usable.

    Tapered Plug

    tapered plug diagram

    Diagram of dimensions for Tapered Plugs with Handle

     

    Custom sizes and shapes are available. Contact Viadon for a quote.

    Not sure what size plugs you need? Check out our free, downloadable Tapered Plug Sizing Charts

    Note: Not all of the very large sizes are available for sampling - Contact Viadon for more information.

  • Masking 101 Helpful Hints

    Silicone Tapered Plugs with Handle (STP-H's) are an easier way to insert and remove very small tapered plugs. Most often a tapered plug is used to plug blind holes that do not go all the way through a part. Ideally, the plug should rest on the edge of the hole 1/3 to 1/2 way from the bottom before insertion, to allow for easiest removal. The included handle makes working with these plugs simpler, and can speed up the masking process.

    • STP-H's are ideal for use in powder coating, e-coating, plating and anodizing.
    • STP-H's offer excellent high temperature and good chemical resistance.
    • Bottom diameter should be 15% smaller than the hole diameter, for best fit.
    • Top diameter should be 15% larger than hole diameter, to ensure enough plug is outside of hole to aid in removal.
    • Add a slight twisting motion when inserting to achieve higher friction and better "hold", especially in deeper holes that can trap volumes of air that expand when heated during some cure processes.

     

    Custom sizes and shapes are available. Contact Viadon for a quote.

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