The Importance of O-Rings

O-rings are basic simple circular seals, set in many cylindrical applications to prevent un-wanted things passing through joints and other breaks in construction.

O-rings are cheap, easy to install, versatile and handle intense pressures and materials. O-rings feature in many mechanical equipment.

An O-ring also known as a toric joint, is a mechanical gasket in the shape of a torus. O-rings are designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal.

Sealtec Hydraulics Workshop offers this service.

What are O-rings Made of?

O-rings can be made from many types of materials dependent upon the application. Because some O-rings are exposed to noxious chemicals or tremendous heat, different materials are needed for different situations.

Lubricants are commonly used on O-rings and other elastomeric seals. Using grease or an oil at assembly, helps protect the O-ring from damage.

O-rings can be constructed of polyurethane, silicone, neoprene, nitrile, rubber or a number of other elastomeric.  There are a number of standardized O-ring sizes, some O-rings are not always round. There are different shapes, including: squares, x-shapes, circles and a whole lot of other types of shapes and sizes.

Applications of an O-ring

O-rings offer many advantages to an assorted collection of opportunities.

As we said, O-rings are cheap and easy to install and can withstand a serious amount of wear and tear. When an O-ring fails, it is usually because of the combined adverse effects of several environmental factors.

The most common O-ring failures include: allowing far too much or too little compression, not enough for seal expansion. O-rings have a high versatility; they prevent leakage in a number of places.

For instance, hydraulic cylinders move very quickly and put massive amounts of pressure on their seals. O-rings also prevent laptops and a computer mouse. O-rings are dominant in this automotive field.

Contact Us Today

For more information on what we do at Sealtec Hydraulics Workshop, contact one of our consultants here at Sealtec Hydraulics or visit our website today for more details.

Leave a reply



+27 16 428 5190/1/2/3/4/5/6/7


(+27) 16 428 4197 (GENERAL FAX)
(+27) 16 428 5040 (SALES FAX)



3C Houtkop Road, Duncanville Vereeniging, Gauteng, South Africa GPS: 26 38'56"S 27 56'21"E


Monday to Thursday - 8:00AM till 16:30PM
Fridays - 8:00AM till 14:00PM
Public Holidays Closed

Please note for an urgent breakdown we are available 24/7

Barry Jacobs Senior (Managing Director)

082 478 6959

Barry Jacobs Junior (Sales Director)

083 654 5195

Jacque Jacobs (Technical Director)

082 825 6174

Fanie Campher (Sales Representative)

082 354 1703

Meiring Van Heerden (Sales Representative)

083 375 7338

Sealtec Logo