What Factors To Consider When Selecting Seals And O-Ring?

Using the proper O-Rings in an engineering application is a crucial task that many seals and O-rings suppliers understand. When it comes to Specialist Sealing Products, for that matter, only the professionals can advise on what is the appropriate approach to utilize seals and O-Rings inside the technical application for which they have been intended.

O-Rings are so fundamental to engineering that they have even seeped into the mainstream talks of laypersons. O-Rings were all anybody could speak about following the Chernobyl and challenger tragedies. It drove home to the world how vital they are.

With that in mind, here is a brief list of essential factors to consider before placing an order for them with your seals and O rings suppliers.

Performance vs Durability

When employing an O-Ring in an application, various aspects must be considered before turning to the Viton O Rings suppliers. If they are for a short-stroke application, then a tiny diameter O-Ring will be adequate. Thick cross-sectional O-Rings are best suited to long stroke applications.

Optimum O-Ring performance relies on minor aspects for them to perform and survive for the anticipated lifespan. Engineering applications depend largely on hydraulic and pneumatic seals on any dynamic rod or piston to have a good life. The durability must in no way impact the effectiveness of the seal in the hardware.

Correct O-Ring Material

The O-Ring may deteriorate if the materials in the application are not compatible. The seal material might swell if the improper component causes fluid to build up and leak. During its function, the long-term use of O-rings depends on the lack of chemicals.


Each extreme temperature of the O-ring should be taken into account during the performance. Seals and O Rings are made with some elasticity, lost at severe cold and brittle. In addition, the chosen O-ring will decay if it is subjected to high temperatures if the application cannot resist high temperatures.


It is highly crucial to know what kind of stresses the O-ring will have throughout its operation. Some figures and statistics must be calculated before the correct application for the O-ring can be determined.

Face Materials 

Face materials and the sealed fluid should be mutually compatible. Graphites are frequently employed as major sealing components due to their superior mechanical and thermal qualities. Ceramics, iron, bronze, stainless steel, steel instruments and many other metals may be composed of the opposite element with dense chrome. Ceramics offer the best wear and corrosive qualities and are one of the most rigid face materials available. They cannot withstand tensile stress, however, and are prone to thermal shock cracking.


To avoid early failures, faces should be cleaned before start-up. A buffer zone or a quenching glans should be provided between the atmosphere and seal faces containing liquids that develop abrasive when they come into contact with air. Heating or chilling is essential to dissolve abrasive substances in liquids abrasive at particular temperatures close to the density faces. Fluids that are abrasive intrinsically may be pumped into the sealing chamber with a neutral clean liquid. If the sealed liquid cannot be contaminated, it may be possible to design a double seal or insert a centrifugal splitter before the seal.

It is, however, advisable to work closely with Rubber O Ring suppliers for easy selection of the right seals and O-rings.