Where this tape is used
- Heat-resistant insulation
- Heat-seal release and sliding surfaces

Nitto NITOFLON No.973UL-S combines PTFE-impregnated glass cloth with silicone adhesive for heat-seal release surfaces, heat-resistant insulation and sliding applications. Its glass-cloth backing distinguishes it from PTFE film tape such as No.903UL.
Replacing tape on a heat sealer? Check the full model on the existing roll, required thickness and width, contact surface and operating conditions. Send these details with the quantity and any cutting requirement; a similar-looking PTFE tape is not automatically an equivalent.
| Backing | PTFE-impregnated glass cloth |
|---|---|
| Adhesive | Silicone adhesive |
| Thickness | 0.13 mm |
| Temperature range | -60°C to 200°C |
| Backing construction | PTFE-impregnated glass cloth |
| Standard color | Natural / beige |
Typical properties are not purchasing specifications. Confirm the substrate or cable system, operating conditions, required size, applicable standard, and installation procedure against the manufacturer documentation.
Manufacturer technical dataChoose by construction: No.973UL-S adds glass-cloth mechanical strength and dimensional stability, while No.903UL uses a smoother PTFE film backing.
Nitto documents heat-resistant insulation, heat-seal release, food-processing conveyor surfaces, printer heating areas, chutes, and hoppers.