STP101XL Tapered Silicone Plug for High-Temp Masking & Powder Coating

The STP101XL is a high-temperature tapered silicone plug used to mask threaded holes, bores, and ports during powder coating, blasting, and industrial surface finishing. Its tapered profile creates a secure seal without adhesive, making it reusable across multiple production cycles.

The STP101XL corresponds to the STS0187x0750-F series, with a small-end diameter of approximately 0.187 inches and an overall length of approximately 0.750 inches. The tapered body expands to seal a range of hole sizes within that specification.

The STP101XL silicone plug is rated to withstand continuous temperatures up to approximately 400°F (204°C), making it suitable for standard powder coating cure cycles and high-temperature spray applications without melting or deforming.

Yes. The STP101XL is a universal high-temp silicone masking plug compatible with any powder coating oven, blast cabinet, or industrial finishing line that requires threaded hole or port protection. It is not application- or brand-specific, fitting standard production masking workflows.

To install, simply press the tapered end into the hole or port you wish to mask. The plug's tapered geometry self-seals under light hand pressure. Remove after coating or blasting and inspect for wear. No tools or adhesives are required.

The STP101XL is compatible with all standard blast cabinet masking applications and powder coating systems. It is designed for use wherever a 0.187" small-end tapered plug is required, regardless of cabinet brand or oven manufacturer.

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