TST406X6 - TechSouth TST40 Thermal Spray Masking Tape, 6-Inch Width

High-Performance Thermal Spray Masking

The TechSouth TST40 6 X 6 Standard System represents a premium solution for masking applications in the thermal spray and surface finishing industries. This product is a specialized single-sided tape constructed from a robust fiberglass cloth backing coated with a high-temperature silicone rubber compound. Designed to withstand the rigorous environments of plasma spray, flame spray, and arc spray metallizing, the TST40 ensures precise boundary definition and protection of critical surfaces.

One of the defining characteristics of the TST40 series is its exceptional thermal stability. Rated for continuous operation at temperatures up to 500°F (260°C), the tape maintains its structural integrity and adhesive properties even under thermal stress. The silicone rubber face serves a dual purpose: it provides a heat-resistant barrier and acts as a resilient shield against abrasive media. This makes the tape highly effective for grit blasting and sandblasting preparatory stages, preventing damage to machined surfaces or areas requiring zero-profile changes.

The adhesive system utilizes a pressure-sensitive silicone formulation that offers high initial tack and long-term holding power. Crucially, this adhesive is engineered for clean removal. After the thermal spray or blasting process is complete, the tape can be peeled away without leaving carbonized residue or adhesive gum, eliminating the need for secondary cleaning operations with solvents. The 6-inch width of this Standard System configuration allows for broad coverage, reducing application time on larger components and minimizing the number of seams where overspray could potentially penetrate.

Engineers and technicians rely on the TST40 for its conformability. Despite its durable multi-layer construction, the tape remains flexible enough to wrap around complex geometries, shafts, and flanges, ensuring a tight seal against the ingress of coating materials. It is an essential consumable for aerospace, automotive, and industrial MRO shops performing component reclamation and surfacing.