configurations installed in a gland to close off a passageway and prevent escape or loss of a fluid or gas and to provide protection against compression or wear in moving parts. It is the most basic form of sealing between two surfaces , O-Rings are successfully used in static as well as dynamic applications.

O-Rings is specified by three of its features: O-Rings dimensions, O-Rings material, and O-Rings hardness. Material and hardness specify the elastomeric compound and Shore A (durometer) hardness of the compound that is used to manufacture the o-rings. O-Rings dimensions are described by stating its inside diameter (I.D.) and its cross-section. Designing for o-rings depends on three major and interrelated variables: the operating conditions or environment the seal will experience, the gland geometry into which the seal will be installed.

O-Rings is also spelled as O’ring,”O”ring or oring. Standard O-Rings are available in various materials, sizes in metric and imperial international standards such as as AS568 , DIN ISO 3601 and JIS sizes , thus providing the quality assurance required to meet the world’s most demanding applications of O-Rings