Shopping Cart

Your cart is empty.

Your cart is empty.

High Temp Masking Supply .187' x .343' STP103 Silicone Rubber Plugs - 250 Pack - Tapered Stoppers for Powder Coating, Painting, Ceramic Coating, Sealing Holes - Non-Toxic, Flexible, Reusable

Free shipping on orders over $29.99

$14.95

$ 7 .99 $7.99

In Stock

About this item

  • Small End = .187" Large End = .343" Length = .625"
  • Withstands heat up to 600ºF (315ºC) - Durable And Reusable
  • High quality synthetic silicone will not crack, shrink, harden or break
  • Use for powder coating, painting, plating, ceramic coating, media blasting, etc.
  • Plug threaded & unthreaded holes to keep coatings, media and liquid out.


HTMS high temp silicone rubber plugs are great for keeping powder coat, ceramic coating, paint, media, liquids, and more out of places you don't want them. Built to take the heat, these plugs can be left in the part during oven curing up to 600° F for 20 minutes. This premium synthetic silicone is flexible to conform to uneven surfaces and works well in both threaded and non-threaded holes. The tapered stopper style design allows these plugs to fit a variety of hole sizes and depths. High Temp Masking Supply is your source for powder coating plugs, caps, high-temp masking tape, hanging hooks, and more.