The SLR75906 silicone gasket is a rocker box / valve cover sealing gasket used on Continental and Lycoming piston aircraft engines depending on configuration. It is made from high-temperature silicone rubber and is designed to replace traditional cork or fiber gaskets in rocker cover applications.

Its main purpose is to provide a reusable, oil-tight seal between the rocker cover and cylinder head while maintaining clamp load stability over repeated maintenance cycles.

Key features include:

Silicone rubber rocker box / valve cover gasket
High-temperature resistant elastomer material
Reusable sealing design (can be reinstalled multiple times)
Maintains sealing under engine heat and vibration
Reduces oil leakage compared to traditional cork/fiber gaskets
Designed for aviation piston engine rocker cover applications
Application-specific fit per Continental/Lycoming engine models (IPC dependent)
Resistant to engine oil and thermal cycling
Used in certified aircraft engine maintenance and overhaul procedures