Aflas O-Rings
                     What are Sealing Ring 
Sealing Rings are round shaped mechanical gaskets which are also known as O-rings, Packing Joints 
and Toric Joint. As the name suggests, these rings are used for sealing liquid or gas in various 
applications. These can be used in static applications as well as dynamic applications where there is 
relative motion between the parts and the Sealing Ring. The rings are largely used in rotating pump 
shafts and hydraulic cylinder pistons due to their reliable performance, simple mounting 
requirements and cost effective prices.
Made from different basic materials, These rings are a loop of elastomer with a disc-shaped cross-
section; these are designed to be seated in a groove and compressed during assembly between two 
or more parts, creating a seal at the interface. Sealing Rings are rigid in design and can withstand 
high temperature, pressure and chemicals.
Available in various metric and inch standard sizes, are the most useful sealing elements ever 
developed. These are sturdy and appropriate for vacuum applications, high temperature applications
etc.
Sealing Rings are available in various materials, but the most commonly used materials include 
different synthetic rubbers and elastomers. Various types of Sealing Rings available in the market; 
some of them are EPDM, CR, NBR, HNBR and SIL.
Here in this article, buyers can find details about various types of Sealing Rings:
CR: These are resistant to sun rays, weather conditions and ozone. The operating temperature of 
these rings varies from from-55-12 Celsius degrees.
EPDM: Made from ethylene propylene terpolymer, these rings are resistant to weather, ozone 
resistant, water and chemicals. Inappropriate for Food Industry, these rings can be used in alcohol, 
allied liquids and in high-temperature vapor environment. EPDM find applications in automobile 
radiator, braking system and in sanitary bath equipment. The operating temperature of these rings 
varies from -55 to 150 Celsius degrees.
HNBR: These rings are known for their corrosion proof, tear proof and deformation proof properties.
The HNBR can also withstand wear caused by ozone, sunshine and other weather conditions. These 
are widely used in washing machines, automobile engines and refrigerating systems. The working 
temperature of HNBR ranges from -40 to 150 Celsius degrees.