STP00 Tapered Silicone Plug – High-Temp Powder Coating Masking Plug

The STP00 is a high-temperature tapered silicone masking plug used to block holes and ports during powder coating, e-coat, and anodizing. It withstands oven cure temperatures and creates a clean paint-free boundary, protecting threaded holes and precision surfaces from coating contamination.

STP00 tapered silicone plugs are rated for high-temperature use, typically withstanding continuous cure-oven temperatures up to 500°F (260°C). This makes them suitable for standard powder coating cure cycles without melting, deforming, or leaving residue on finished parts.

The STP00 is one of the smallest tapered silicone plugs in the STP series. Its tapered profile accommodates a range of small-diameter holes, providing a secure friction fit in holes from approximately 3/16" to 5/16" depending on insertion depth. Verify fit against your specific hole diameter before ordering in bulk.

Insert the STP00 small-end first into any hole or threaded port you want to keep coating-free before racking the part. The taper grips the hole wall as the plug is pressed in, sealing the bore. After the powder coating cure cycle, the plug pulls out cleanly without adhesive residue, leaving a protected surface ready for assembly.

The STP00 is used across automotive, aerospace, agriculture equipment, and general metal fabrication finishing operations. Any production facility that powder coats or liquid-coats machined parts with threaded holes, dowel bores, or bearing bores relies on tapered silicone plugs to prevent rework and maintain dimensional accuracy.

The STP00 is among the smallest in the STP line, designed for fine-pitch or small-diameter holes where larger plugs like the STP2 or STP3 would not seat properly. The full STP series covers a broad range of hole diameters, so buyers can standardize on silicone masking plugs across an entire production range from the same supplier.

STP00 plugs are available for direct online purchase at creativecoatingsolutions.com/skp1059. Orders ship from stock and volume pricing is available for industrial buyers. Contact Creative Coating Solutions for bulk quotes, net-terms accounts, or questions about compatibility with your masking program.