Significance of O-rings

The Significance of O-Ring in Sealing off Leakage

If you possess knowledge about some vital manufacturing components, O-Rings would not be a new term for you. O-Rings were first introduced at the beginning of the 20th century, however, this is all because of its exciting benefits and spectacular features that have made this leak-proof component gain a lot of popularity in the recent era. Though a lot has altered (in terms of manufacturing elements) with the advancement in technology over the past years, O-rings, both in terms of shape and functionality have comparatively remained the same. Let’s have a look at how does this donut-like structure functions:

The working for O-Ring Seals

The main form and function of O-Rings have always remained identical no matter if they are sold on wholesale or are traded as a basic o-ring kit to the customers. As the name itself suggests, O-ring is more of a donut-shaped manufacturing component that is specially crafted to offer leak-proof advantages to the people across the board.

This torus-like structure mainly serves as a leak-proof system between two crucial components with the major motive of preventing the unnecessary passage of air and liquid from the same. O-Rings are even compared to the rubber and paper gaskets; however, the former is utilized in the high-pressure settings where common a gasket would not work. In short, O-Rings are placed between the medium of two components that are joined together and create a tight seal to avoid any sort of leakage. Note that in order to achieve the desired results, it is essential to create a proper balance between the components and O-ring size.

Common O-Ring Seal material

It is very obvious to say that O-Rings are made up of multiple O-ring materials that have many comprehensive uses. Therefore, opting for the most accurate type of this donut-like component should be your major concern (If you want it to function the way you need). Here I am presenting the vital materials that are used to design this fabulous manufacturing component. Let’s have a look:

Viton O-Ring Seals
Nitrile O-Ring Seals
Rubber O-Ring Seals
Silicone O-Ring Seals
Metal O-Ring seals
Fluorocarbon elastomer O-Ring Seals
NBR 70 O-Ring Seals
Stainless Steel O-Ring Seals
Buna-N O-Ring Seals
NBR O-Ring Seals

So what are you waiting for? Choose the best O-Ring material as per your needs and enjoy its long-lasting leak-proof benefits.

American Seal & Packing sealing with confidence

O-rings are an essential part of the industrial industry. They are designed to stop leakage where fluids are transferred, and where chances of leakage are high. O-rings may be in place along rotating shafts, sleeves, placed in flange grooves, valve bonnets, or any threaded or bolted connection. They are usually put into a groove to hold them in place and then squeezed between two surfaces. At first look, the concept of O-rings looks extremely simple. However, the correct size, material, and design will determine the type of O-ring needed for the correct job.

Like the name implies, O-rings have a circular shape and their size will be determined by what is needed to be sealed. O-rings are sized by the inside diameter (I.D.) then by the cross section (C/S) or width (W). There will be instances where O-rings cant be made exactly to the dimensions needed, so manufactures are allowed to make them within range of their original dimensions.  They are also made using a variety of materials that include Viton, EPDM, Silicon, PTFE, FKM, FFKM, Buna-N, Nitrile, and Kalrez. Most O-rings are molded from rubber, silicone, or a blend like Flourosilicone. Molded rubbers are made of “compounds” which essentially means it is a blend of materials. Keep in mind that temperature range, application, what is being sealed, pressure being sealed, the size, and speed will determine what type of O-ring you will need.

O-rings that have cheap fillers will often show premature cracking when in service, so it’s essential to be able to identify which O-ring right for you. With all variables that take into play of choosing the correct O-ring, American Seal & Packing can advise on which O-ring will provide the best probability for a successful seal. An O-ring’s designed will vary from each industry and application, but you can assure that American Seal & Packing will help choose the correct O-ring which will bring long term sealing success.

Get the Right O-Rings for all Applications @AS&P O-Rings Sales

O-Rings are a critical sealing element in in today’s industrial world. No matter what mechanical applications an industry develops, O-Rings are necessary to create and maintain the sealing of fluids and gases in Industries rangeing from Aerospace to your home faucet.

O-Rings are basically circularly shaped rubber  used to seal a joint between two flat surfaces. Both surfaces can be static, but often one is dynamic (has motion). Because o-rings conform but also have recovery, they are able to adapt and seal dynamic surfaces.

The varieties of these circular seals available in the market, however, can be very confusing and overwhelming. Choose the wrong O-Ring and your application will fail. Choose the right one and you may have a seal for 20 years or longer.

The real problem is of choosing the right rubber compound for the job. Most rubbers are compounds meaning they are blends of various types of rubber with a primary type of material.  Selecting a reputable source helps ensure the compound you are getting will perform as expected.  Some cheap imports are loaded with clay or inferior material to make them less expensive. There are many primary rubber types including Aflas, SBR, NBR, Buna-N (Nitrile), Silicon, Buna-N, EPDM, Kalrez, PTFE, FEP encapsulated and Viton. Beyond that the difference in compunds makes hundreds of version of each. Some with higher or lower swelling rates when exposed to oil, or higher or lower temperature resistance all depending on the compound. Color can be added:  Silicone can be translusent, orange or Red for example. Viton is often colored brown just to distinguish the expensive Viton o-ring from an inexpensive Buna-N o-ring.

Not only does the material vary from one O-Ring to another, the size plays an important role as well. The standard sizes of the O-Rings manufactured can follow multiple standards including AS-568 (USA Aerospace Standard) Metric, BS (British Standard) JS (Japanese Standard) as well. O-Rings also come in a variety of shapes.  The 3 common shapes are Round, Square Cut and Quad rings (also called x-rings).

With all these variations of O-Rings, how do you choose the right one?  The answer can be simple or complicated depending on the application. In general the key factors are will the selected material withstand the media being sealed, at the given temperature and pressure. Secondly, is the application static or dynamic.  If static, chemical compatibility, temperature and pressure are the key factors (like a gasket).  If dynamic however, the speed and surface finish must also be considered.  Friction can easliy generate excessive heat.  A rough surface can act as an abrasive and greatly reduced the life span of the o-ring.

If your installing an o-ring into an existing application much of the work has been done for you. If however your in the design stage (design guides should be consulted) you must consider how the o-ring is to be held in place, the size of the o-ring groove and if a back-up ring is required to elevate the amount of pressure the o-ring can seal. O-rings seal well because they are conformable, but that same conformability can work against the seal and allow it to be extruded in high pressure applications.

Just consider its usage and the choice can be made. The choice of O-Rings can be made based on the application it is to be used in, the speed of the application, the temperature, pressure, and strength conditions that it might need to endure, and the size of the groove it needs to fit in.

American Seal & Packing O-Ring distributes a complete range of o-ring types, shapes and sizes. Its meticulous staff can also helps you pick up the correct material as well as the size of the o-ring for your application. The O-Ring kits assembled by American Seal and Packing O-Ring sales consists different standard sizes of rings that can be worked with readily in the industry. All these O-Rings are tried and tested on different parameters to provide solid, impeccable seals.

Viton O-Rings

Hi, I’m Hannah with American Seal & Packing here to talk to you about FPM  O-Rings and Gaskets.

The terms Fluoroelastomers: FKM, FPM, and Viton® are all different designations that stand for the same base material, which is fluoro rubber. FKM is the abbreviation according to the ASTM, FPM is the short form for the fluoroelastomer category according to DIN/ISO and Viton® is the registered trademark of DuPont Performance Elastomers.

Elastomer FPM is resistant to heat, oil, solvents and strong acids. Elastomer FPM has limited resistance butyl acetate, acetone, and methyl alcohol.

Fluoroelastomers are not compatible with Skydrol, amines, ketones, hot water, steam, or brake fluids.

The temperature service range for FPM is a low of -20 degrees and a high of 450F

If you’re in need of Fluoroelastomers O-Rings, call American Seal & Packing today. Thanks for watching.

It is important to consider the details of your application to select which material is right for your situation.  The staff at American Seal & Packing can tell you which material is best for you based on the temperature, media, application, and pressure you are dealing with

If you’re in need FPM, FKM, Viton or Kalrez  O-rings or gaskets, call American Seal & Packing today.


A staple in the sealing industry

O-rings have become a staple in the sealing industry. O-rings are used in places where different parts of a mechanism meet and where chances of leakage is high.With their ability to seal and stop a leakage, they have become a key component to keeping things flowing smoothly. O-rings can be found in various industries, but the type of material and size will vary on what type of environment it’s being exposed to. You can ensure that an O-ring will be an optimal piece when it comes to sealing any for of leakage and allowing proper flow.

In the United States, AS-568 has become the standard, but O-rings do come it different shape and sizes. Some of the most important compounds include Buna-N, Neoprene, Silicone, and EPDM, so being able to identify which compound you need is essential. The most commonly used raw materials are synthetic rubber, but they can also be made with plastic or metal. This material is highly versatile and usually comes oversized. It is essential that o-rings are made larger because they shrink in the mold and during the post curing stage. This oversized design will ensure a tighter fight and a longer longevity.  The hardness of the rubber must be taken into consideration as well. The rubber material can be made very soft or very hard. Very soft will be referred to as low durometer reading and very hard will be high. Some sealing surfaces may not totally smooth and some might. Softer material will help aid fluid flow well in areas that aren’t totally smooth and vice-versa.  Understanding the size and material you need is essential in choosing which O-ring is for you. O-rings by default are shaped like a doughnut, but there are instances that there are lobe style o-rings and rectangular cross sectional o-rings each which have their own specialty. O-ring kits are also a viable option when it comes to choosing which is best for you. These kits will contain various sizes, but the material will remain the same.

Understanding what you need will allow you to be able to apply the correct O-ring needed for the correct application. An efficient O-ring is important for every mechanical assembly, and American Seal & Packing can help aid in choosing the correct one for every application.