In addition to the commonly used ones, you also need to know about these rubber bellows

Rubber bellows are a type of flexible, expandable, and compressible rubber tubing that is used in a variety of applications. They are commonly used in industrial and automotive applications, as well as in medical and laboratory settings. Rubber bellows are designed to provide a seal between two components, such as a pipe and a valve, or a pipe and a flange. They are also used to protect components from dust, dirt, and other contaminants.

Rubber bellows are made from a variety of materials, including natural rubber, synthetic rubber, and neoprene. Natural rubber is the most common material used in rubber bellows, as it is highly durable and resistant to wear and tear. Synthetic rubber is also used, as it is more resistant to extreme temperatures and chemicals. Neoprene is a synthetic rubber that is often used in medical and laboratory applications, as it is resistant to bacteria and other contaminants.

Rubber bellows are available in a variety of sizes and shapes, depending on the application. They can be round, oval, or rectangular in shape, and can range in size from a few millimeters to several meters in length. The size and shape of the bellows will depend on the application and the components that need to be sealed.

Rubber bellows are typically used in applications where a tight seal is required. They are often used in automotive applications, such as in the exhaust system, to prevent exhaust gases from escaping. They are also used in medical and laboratory settings, such as in the connection between a syringe and a needle, to prevent contamination.

Rubber bellows are also used in industrial applications, such as in the connection between a pipe and a valve, or a pipe and a flange. They are used to provide a tight seal between the two components, and to protect them from dust, dirt, and other contaminants.

Rubber bellows are also used in a variety of other applications, such as in the connection between a pipe and a pump, or a pipe and a filter. They are also used in the connection between a pipe and a pressure gauge, or a pipe and a pressure regulator.