This is a pack of five Lucky 7 RC Exhaust Gaskets. Lucky 7 gaskets are made from high-tensile strength silicone, providing the user with a product that is highly resistant to tearing and heat deformation. They are used to seal the engine/manifold or manifold/pipe connections on most .21-.28 size engines and pipes, and will provide a durable, long lasting seal that will help to prevent an inconsistent tune due to an exhaust leak. Dont roll the dice with your equipment, get Lucky.
Exhaust gaskets lose their seal over time due to the intense heat created by the engine and pipe. If the gasket is leaking around the exhaust port or the tuned pipe/manifold connection, it will make the engine behave erratically so it is a good idea to replace them when they get old or if you find they are leaking.
NOTE: Misaligned pipe and manifold connections, as well as loose pipe mounts will cause pre-mature wear to the gasket. If your gaskets are torn, verify that your pipe is installed correctly and securely before installing new gaskets.