STP3 Tapered Silicone Plugs – 0.938" High-Temp Masking Plugs for Powder Coating

The STP3 is a high-temperature tapered silicone masking plug (STS0938L series) used to seal 0.938-inch-class threaded holes, ports, and bores during powder coating, sandblasting, and industrial finishing. It provides a self-locking, adhesive-free seal and is fully reusable.

The STP3 belongs to the STS0938L series, with a nominal diameter of approximately 0.938 inches. This sizing covers standard 15/16-inch bore applications in metal fabrication and finishing environments.

The STP3 silicone plug is rated for continuous high-temperature service up to approximately 400°F (204°C), compatible with all standard powder coat cure cycles and industrial oven finishing operations.

Yes. The STP3 is a universally compatible tapered silicone masking plug that works with all blast cabinet brands, powder coating ovens, and spray finishing systems requiring a 0.938-inch tapered plug.

Press the tapered end of the STP3 into the bore or port by hand until firmly seated. The taper provides a self-sealing lock without tools or adhesive. Remove after the finishing cycle and inspect the plug for wear before reuse.

The STP3 works with benchtop and industrial blast cabinets, powder coating ovens, and liquid spray finishing systems from all major manufacturers that require a 0.938-inch tapered masking plug.

Order at creativecoatingsolutions.com/stp3. Priced at $51.16 per pack, the STP3 is in stock and ships quickly. Contact Creative Coating Solutions for bulk quantities or custom orders.