O Ring Seal Types

In this post we ll talk about the common types of o ring applications and their impact on o ring sizing and hardware design.

O ring seal types.

They are used to prevent gas and fluid leaks in static and dynamic applications and are manufactured from various types of elastomers. This seal acts similar to the gasket which is squeezed on both ends top and bottom of an o ring cross section. Buna n also know as nitrile o rings are one of the most common general purpose type of seal available on the market today. One type of o ring material.

This type of seal is typically employed in the face flange type applications depicted in illustration 4 1. O rings are mechanical gaskets with a round cross section. With a temperature scope between negative 54 and 149 c nitrile is suitable for use with hydraulic fluids petroleum and water. These seals are used in flange or face type applications.

When compared with an o ring these other seal types may show one or more design disadvantages which might be overcome by use of an o ring. Widely regarded as a general purpose type of o ring nitrile elastomers also known as buna n or nbr offer a respectable temperature range of between 50 c and 120 c with excellent resistance to tears and abrasive treatment. When designing grooves for static axial seals the first consideration is whether the pressure is coming from inward or outward. Some of the common types of o ring materials include ptfe nitrile buna neoprene epdm rubber and fluorocarbon viton.

Nitrile o rings are a popular type of rubber seal gasket that s used in a wide range of applications and environments they re broadly seen as a general purpose o ring type with reasonably resistant sealing properties against water gasoline petroleum oils crude oil propane and some hydraulic fluids. Static axial seals a static axial seal acts similar to a gasket in that it is squeezed on both the top and bottom of the o ring s cross section. A number of common seal types t seals u cups v packing and other devices have been and are still used for both dynamic and static seals. Internal or external pressure must be taken into consideration when it is used as a face seal.

As an aid in assessing the relative merits of an o ring the. The shape can have different profiles an x shaped profile commonly called the x ring q ring or by the trademarked name quad ring. Not only can it hold up against abrasive activity it is also tear resistant.