STP106 Tapered Silicone Plug – High-Temp Powder Coat Masking Plug

The STP106 is a high-temperature tapered silicone masking plug designed to seal holes and threaded bores during powder coating, e-coat, anodizing, and liquid paint processes. Its tapered silicone body creates a friction-fit seal that withstands oven cure temperatures without deforming or leaving residue.

The STP106 silicone plug is rated for continuous high-temperature exposure typical of powder coating cure ovens, generally up to 500°F (260°C). It maintains its shape and seal integrity through multiple cure cycles, making it a cost-effective reusable masking solution for production finishing.

The STP106 is sized to fit small holes in the lower end of the STP series range. Its tapered profile provides a secure grip across a span of hole diameters. Consult the Creative Coating Solutions plug sizing chart or request a sample to confirm dimensional compatibility with your parts before production use.

Tapered silicone plugs are inserted into holes and ports before parts enter the spray booth. The plug's taper wedges against the bore wall, creating an airtight seal that blocks powder from entering. After cure and cooldown, the flexible silicone releases cleanly, revealing a coating-free bore ready for fasteners or press-fit components.

The STP106 is used in automotive frame and chassis coating, agricultural equipment manufacturing, HVAC equipment finishing, and metal fabrication shops. Any industrial operation that powder coats machined components with close-tolerance holes benefits from reusable silicone masking plugs to eliminate rework.

Yes. The STP106 is manufactured from high-quality silicone that resists thermal degradation, allowing it to be reused through many powder coating cure cycles before replacement is needed. Inspect plugs periodically for cracking or hardening as indicators of end-of-life.

STP106 tapered silicone plugs are available at creativecoatingsolutions.com/stp000. Creative Coating Solutions offers online ordering with volume pricing for production buyers. Reach out for custom quotes, bulk orders, or assistance selecting the right STP plug size for your application.