E gaskets, named for their E-shaped cross-sectional profile, are commonly used on windows and doors in uPVC glazing systems. These seals work in a very similar way to wedge gaskets but are manufactured with an arrow foot that allows the section to hold itself in place within the glazing channel. The foot restricts the section from moving and allows you to install the glass without needing to support the actual seal. Manufactured with three sealing fins, the ‘E’ shape provides a degree of flexibility that allows the gasket to accommodate slight movements and tolerances within the frame.
E gaskets are normally used alongside wedge gaskets in uPVC windows and doors. The E gasket will first be fitted into one side of the frame, allowing for the easy installation of the glass. The final step will usually involve pushing the wedge gasket into the remaining gap between the glass and frame. This will apply compression against the glass, creating a seal that keeps your home warm and comfortable.
You will need to take measurements from your existing section to ensure that you purchase the correct replacement product. This will allow you to purchase a replacement seal that fits into the channel groove and is the correct size to create a reliable watertight seal.