This tutorial demonstrates how to create a simple underwater world in Kodu Game Lab.In this tutorial we add a fish to move around in the water.1  Education.his tutorial demonstrates how to create a simple underwater world in Kodu Game Lab.
An O-ring is a round ring that is used as a gasket for sealing a connection. O-rings are typically constructed out of polyurethane, silicone, neoprene, nitrile rubber or fluorocarbon. These rings are commonly used in mechanical applications, such as pipe connections, and help to ensure a tight seal between two objects.
The O-ring is one of the simplest, most common types of seal for a wide range of static and dynamic applications. The design of the O-ring groove is relatively straightforward -- by following well-developed rules for groove geometry, an economical and reliable seal is obtained. The tendency of the O-ring to return to its original shape when the cross-section is compressed is the basic reason an O-ring makes an excellent seal.