The hoselike rubberized canopy inflatable seal (fig. 2-9) is retained in a channel around the circumference of the canopy assembly frame. When inflated, the seal fills the gap between the frame and aircraft structure.

Canopy Seal Pressure Regulator 

The canopy seal pressure regulator is on the turtle deck (fig. 2-10). It consists mainly of a check valve, shutoff valve, bellows, spring-loaded ball, and plunger. The regulator regulates its 80 psi bleed air input to the 25 5 psi required by the canopy seal system, and controls inflation and deflation of the canopy inflatable seal. The regulator also relieves pressure in excess of 6 to 8 psi above the regulated value.

Figure 2-10.- Canopy seal pressure regulator location.

Figure 2-11.- Electrically actuated canopy pressure seal system.