Kapton Tape Discs are small precut tapes that are primarily used to cover up certain areas on a circuit board. They are constructed of polyimide film and is lined with a silicone adhesive. The silicone adhesive has a thickness of 1.5 Mil. These Kapton tape discs can withstand a maximum temperature of 260°C, or 500°F. These discs are also flame retardant and has a UL of 510.