O Rings Manufacture

An O ring is usually known as toric joint or packing. It is a mechanical gasket with the shape of torus. It looks like elastomer with round cross-section, which is specially designed to be seated in the groove and compressed during the assembly that is exactly between 2 or more parts. It is usually to create a seal at the joints. 

Where O rings used?

In static and dynamic applications

Static – used where there is a relative motion between their parts and the O ring

Dynamic – used in hydraulic cylinder pistons and rotating pump shafts 

Sizes

O-rings come in different sizes such as British standard, which are metric or imperial sizes. The dimensions of o-ring are thickness, outer dimension, and inner dimension. British standard rings defined by a standard reference, while the metric o-rings defined by thickness x internal dimension. Typical formula is internal dimension x cross section.

How to select O-ring?                 

                                                                                                  

• It’s based on the lubrication requirements, application temperature, size, chemical compatibility, durometer, sealing pressure and cost

• Based on the nature of the application, we can select the type of O-rings because it sustains the pressure adequately

•  Different choices such as Silicone, EPDM, Flurosilicone, etc. Select the best choice based on the application like which O-rings handle the seal, temperatures, etc

•  Just figure out squeeze ratio because how force applied against hardware that results in tightening the seal

• Consider the design of the hardware, so that you can select right type of O-ring which tolerates the pressure and compression                                                                         

•  Choose most sustainable O-ring type for particular application, consider physical factors of pressure and temperature levels                                                       

How to achieve optimum performance?

Metals – It moves over O-rings that have the hard surface such as chrome plated, steel, etc. While selecting soft metals like bronze, brass or aluminium, special attention required

Squeeze – Minimum diametric must observed for a good sealing. When friction is critical, pressure is low the amount of squeeze decreased but caution should excercized

Surface Finish – Surface finish should be held at a maximum finish of 16 RMS, although if you see groove finish have a maximum of 32 RMS

Cleanliness – Clean the systems that make free from the chips, grit, dirt and especially foreign items. Types of abrasive material will cut the O-ring. If you replace O-rings, kindly have a metal chip embedded into O-ring that means a pump issue

Wye-valley - a leading manufacturer of rubber mouldings, rubber components and post moulding operations in the UK over twenty years. We manufacturerubber O-rings and supplies for various industries such as marine, electronic, automotive, medicals, etc. 

                                                                                                                                                                                                                                                                                                

O Rings Manufacture