PRC® pre-formed sealant gaskets and fillets are cast in custom shapes and sizes to a customer's specification for highly specialized applications. One practical application PPG Aerospace has developed is PRC® Drainblocks for BAE Systems' Typhoon combat aircraft. PRC® Drainblocks are applied in the rear fuselage side structure of the aircraft. Pockets near the engine bay can accrue moisture and water which can lead to a variety of issues. The pre-formed sealant gaskets are designed with holes that are used to drain moisture and water build up during flight in the specific part of the aircraft.

Some of the benefits offered by the Pre-formed Sealant Gaskets are:

Customized to meet the needs of the customer and as a result are able to address a variety of issues that accompany sealant application

Since the gaskets are pre-formed, they require minimal tooling

Requires less wet sealant because the gaskets are already cured