How to select O-Rings

There’s an increasing range of size and material used to make O-Rings in the rubber, plastic and metal industry. The production of O-Rings has gone up recently. The demand of O-Rings is also on the rise. This means that O-Rings are now used for countless reasons. Therefore, you can easily get confused when selecting the best O-Ring for your home/ work use.
In this guide, I give the best tips to use when selecting the right O-Ring for your intended purpose. Please read on.
What is an O Ring?
Also called Toroidal Seal, an O-Ring is a doughnut-shaped object (a torus) that is crafted from an elastomer, and can be used as a seal to stop the flow of fluids.
O-Rings are often simplified and economical products that ship in several forms and can be used for several uses. For instance, you can use an O-Ring as a static seal to replace a sealing washer. You can also use the product as a both single and double acting dynamic seal. Others prefer to use the O-Ring to radially seal cylinders from either internal, external or axial positions.
O-Rings can be manufactured effortlessly, in both small and large volumes depending the required size. This is thanks to their circular form that can be elastic and often features an ring-shaped cross section.
Here some of the common factors to consider when selecting O-Rings:
• The size of the object being sealed – inches or metric
• Predicted applied pressure
• Anticipated temperature levels
• Application type – static or dynamic application
• Type of material – solvent, abrasive, caustic, acid
• If dynamic – speed of moving surfaces
Different instances when you have to select an O-Ring
When replacing an old or damaged seal
• Start by measuring the cross-section “W” to determine if it’s an imperial size (BS 1806), a metric size (BS 4518), or any other metric standard.
• Measure the inside diameter (I.D.) readings of your cylinder using a Vernier caliper to get accurate readings. Bear in mind that an O-Ring is usually differentiated by its I.D. x section – say, 5 x 16. This means you can use these I.D. readings to select the closest O-Ring that’ll fit.
• If you’re not sure, select a sighly larger O-Ring size, given it can easily compress to fit a smaller I.D. – but I advise landing the exact O-Ring size.
When the O-Ring is missing and only have housing metalwork
If somehow you’re lacking an O-Ring but have the shaft, rod or piston, you can use the procedure above to get the right O-Ring.
When at the design stage
• In this instance, you have a series of options. Opt for ex-stock O-Rings both in size and material.
• Ask for customized products when you lack alternatives.
• Stick to commonly preferred material finishes and durability.
• Know how and where the product will be used, whether static or dynamic. This will determine the size and material you’ll select.
For example, temperatures will determine the material of the O-Ring, while the applied pressure will decide the rubber hardness, size of groove and the extrusion gap of the product. This means that if the pressure applied is high, opt for a minimum gap. Alternatively you have to include the back-up washers, and larger grooves.
When factors are unknown
• In this case, I advise performing a rather overall assessment.
• Choose the largest O-Ring section to match the nominal groove I.D. – allows for extreme temperature withstanding and high pressure torelance. It’ll also tolerate several metalwork sizes, and surfaces.
• You should also deliberate how to install the O-Ring – where up to 7% range is allowed, but about 4% of the outside diameter is recommended.
• Apply a considerable squeeze to the cross-section to improve its effectiveness. Avoid applying too much pressure on dynamic uses.
• Maintain the deformation size recommended at the depth of the groove.
• Mind the sizes used when you seal dynamic applications
• Remove all sharp edges and try using fitting tools as well as desirable lubricant when installing
How to select the material used
O-Rings are mostly created from an elastomer called Nitrile 70 Shore ‘A’ (NBR 70). The elastomer can seal a larger part of normal applications, such as water, petrol and oil. These fluids alongside balmy chemicals that record up to 1000 C as well as 1500 psi, offer mating surfaces and adequate housing metalwork.
Bear in mind of the following:
• Low temperatures – often below -350C
• High temperatures
• Hightened pressures
• Hazardous chemicals
The industry is also increasingly demanding for peculiar materials – certified to be used alongside Food Machinery (FDA), and Potable Water (WRC).

About Lusida Rubber Products

Lusida rubber products is an excellent manufacturer of industrial rubber, plastics and metal components. The company is established in the US, where it’s registered and operates, but maintains its manufacturing facilities in China. Lusida supplies quality industrial products to OEMs such as O-Rings, oil seals, custom molded rubber, fabric reinforced hoses, seals, gaskets, extruded profiles and much more. Lusida Rubber can help you develop your products from concepts to prototype to final production.

With every passing year there is always advancement in technology in the manufacturing world. However, there are certain things that are still in use for years now and a classic example of that would be the O-ring. It was first patented way back in 1896. It is a loop that resembles the shape of a doughnut used to prevent liquids and gases from passing through it. It is used all over the world for sealing products and has stood the test of time. It is basically a gasket.

The materials that an O-ring is made up of include plastic, metal and rubber. Find the different types of materials listed below:

Fluoroelastomer – This material is used in applications that involve heat. O-rings of this material are long-lasting and resistant to heat.

Silicone rubber – These O-rings are generally used in the food industry as they are non-toxic.
Thermoplastic polyurethane – This material is resistant to degradation.

Ethylene propylene diene monomer – This material is resistant to steam, moisture, grease and silicone.

A classic example of the use of O-rings is in automotive engines. O-rings are used in preventing the oil from getting into the combustion chamber. It may be a rather simple component but it does its job really well.

The O-rings work as a seal by preventing fluids from escaping from the gaps in the two mating hardware surfaces. Usually made out of rubber, these are soft and are mechanically plugged into the hole between two surfaces.

O-ring is a loop that resembles the shape of a doughnut and is used for sealing products. It is made out of many different materials.

In our daily life we get to see a lot of rubber products in different forms. Almost everything you pick up will have rubber in some form or the other. As you must be aware, rubber is a natural product that is extracted from rubber trees worldwide with Asia being the main source.

Rubber can also be produced synthetically and is used widely in many industrial and household applications. One of the largest consumers of rubber is the automobile industry as it is used in huge amounts to manufacture tires and tubes. Rubber is used to make hoses, belts, gloves for medical uses and much more. It is also used as an adhesive in industries. The reason why rubber is so versatile is because of the fact that it can easily change its shape and form. Additionally, to make rubber harder and stronger it is made to go through a process called vulcanization. It is obvious that when the rubber used is strong by nature, the end product will be durable.

Lusida Rubber Products, Inc is a China based manufacturer of rubber products. They have their headquarters in the US as well. Lusida caters to the needs of various industries. The products of Lusida Rubber are of top notch quality but at the same time are reasonably priced.

Rubber is used in several industrial and household applications. The automobile industry is one of the largest consumers of rubber. Lusida Rubber Products, Inc is a manufacturer of good quality rubber products.

There is a need of rubber products for a plenty of industrial applications. Rubber is used in almost all the major industrial sectors for different purposes. In general, the rubber products industry has been able to witness a solid growth over the years. Lusida Rubber is one such rubber products manufacturing company that has a wide and varied list of industrial rubber products. Located in China with a corporate head office in the US, Lusida gets sufficient global exposure and is able to get plenty of orders from different industrial sectors worldwide.

Lusida Rubber Products caters to the needs of industries such as health care, medical, transportation, agriculture, automobile, chemical, food & beverage and many more. It manufactures sealers, hoses, insulators and a number of other products. With the changing requirements of most industries, the firm is putting in a lot of efforts to meet them. What makes Lusida Rubber Products stand out from the rest is the fact that all the products manufactured by Lusida pass through stringent quality control. No stone is left unturned to ensure that only the best gets delivered to the clients and that too in a timely manner. Another parameter that the company keeps in mind always is affordability. You can get good quality products at competitive prices here.

Lusida Rubber Products manufactures industrial rubber products. It caters to the needs of industries. The product quality is always maintained with on time delivery and competitive pricing.

In the manufacturing world, there is always the need for several products and one among them is a seal. The most commonly found seals are O-rings. They have a simple design yet are able to serve the purpose really well. By definition, O-ring is an object made out of an elastomer and resembles the shape of a doughnut.

Lusida Rubber Company manufactures these rings and supplies them to various industries. O-rings are not costly but at the same time they are quite easy to install. The sealing ability of these rings is superb. O-rings are divided into two main types and they are:
•Static seals
•Dynamic seals

With static seals there is nil or very little movement between the mating surfaces. Dynamic seals are meant for applications in which there is relative motion between the surfaces. Both these seals are manufactured by Lusida Rubber Products Inc.

The selection of O-ring is based on the following factors:
•Chemical compatibility
•Application temperature
•Sealing pressure
•Lubrication requirements
•Quality
•Quantity
•Cost

Apart from the above, the material used in making it and the different sizes are also taken into consideration. Manufacturers like Lusida Rubber Products Inc. produce good quality O-rings and the credit goes to their experience.

O-rings are the most commonly found seals in the manufacturing world. These rings are divided into two main types and they are Static seals and Dynamic seals. The selection of O-ring is based on a number of factors.

Rubber has been an integral part of our lives for a really long time now. There are a plenty of rubber product manufacturing companies and Lusida Rubber Products is one such firm. At Lusida Rubber Products Inc, there are wide and varied rubber products that are immensely useful for various purposes. They make products out of solid as well as sponge rubber as per the specifications given by the client. Even standard products are manufactured but customization is also their forte. Affordable pricing and timely delivery are attributes that can be easily given to Lusida. The firm also gives the assurance of great product quality. The products that Lusida Rubber Products company has expertise in manufacturing are O-Ring, grommets, washers, bushings and oil seals to name a few. There is a lot more. Lusida always makes products using materials that are approved by FDA much to the happiness of prospective clients.

Lusida Rubber Products has a corporate office in the US in Los Angeles where the customer care and shipping department function from. In China, there are three facilities of the company. Having an office in the US has made things easy for US-based businesses as they can easily reach out to the team of the company and make the necessary enquiries.

Lusida Rubber Products is a manufacturing company in China with their corporate office in the US. They manufacture a number of different rubber and related products and give the surety of competitive pricing, high quality products and timely delivery. The materials used are FDA approved.  

Rubber industry is a versatile industry which has impacted the world’s growth.it holds a lot of importance since it provides a path for manufacturing different types of industrial rubber products. Lusida rubber products have seen the rubber industry as the game changer and adding so much to the economy.

Experience: The Company has been in the business for over 18 years and they have acquired enough wealth of experience. The reputation is built up by the constant feedback from the consumers of the goods.it is among the leading manufacturers of industrial rubber products.

Versatile: Lusida Rubber is a correct definition ofversatility; it covers almost every sector of the industry as well as government sectors. The company is expanding itself any plans to unfold more creation with the rubber material for the benefit of the user.

Motto: Lusida rubber products have a clear aim of satisfying its customers. It targets making superior quality products and delivering them fast for proper utilization. The products are high-performance rubber bands which can molded rubber goods and rubber extrusions according to users need.

The requirements of the market have been very well served by the company and ensure top quality at rational prices. Good guidance is provided by the support team for the existing as well as potential customers.

Lucida rubber is one of the pioneer and behemoth in the international rubber industry. The products are made from top quality materials and aimed to serve industries like automobile, home installation to name a few.

One of the popular and most sought after rubber product supplier is located at Pasadena, California. Lusida Rubber Products, Inc. is specialized in the manufacture and export of industrial rubber components. They are extensively used in the field of engineering and industries. The industrial rubber components are best known for their tensile strength and resilience. They also deal with customization of various rubber components that comply with the demand of the valued clients.

Lusida have produced durable and top quality automobile rubber parts catering to the needs and expectations of customers. They do manufacture a wide range of automobile rubber silencer parts which is rigid. Each rubber components are supplied in standard grades within a short period of time.

The company manufactures HDPE pipe joining gaskets which is best known for durability. Furthermore, top quality rubber products are also manufactured at a reasonable price. At Lusida, they provide technically updated range of Pharmaceutical Rubber Wads which has a very high compressive strength. They meet the high quality standards since it is prepared by a team of highly skilled and industrious engineers. All the orders are processed and shipped through a reliable courier service company free of cost. The estimated transit time is about 3-4 days.

Lusida Rubber Products Inc. is an accomplished supplier of rubber products in Pasadena, CA. USA. They have been dealing with the manufacture and customization of superior quality industrial rubber components sold at attractive rates. 

Thermoplastic Elastomers are cluster of polymers, which can be easily molded and extruded. However, it displays properties to that of a thermo set rubber. Lusida Rubber Products, Inc. is specialized in the manufacture of thermo plastic rubbers. They are processed like plastics and easily recyclable. Thermoplastic Elastomers, which are soft and flexible, can be easily stretched to any extent. The process can be repeated any number of times without hampering the structure of thermo plastic Elastomers.

Thermo plastic rubber has the ability to regain its original shape. It is widely used in the field of markets as well as consumer goods. Thermoplastic Elastomers can be molded into rigid thermo plastic materials. It is best suited for bottle cap liners and sealing rings. In addition, it can be used for various automotive components, wires, cable insulation, home appliances and HVAC.

One of the major benefits of Thermoplastic Elastomers is that it can be re-molded. At times, it can be easily molded, stretched and hard which is based on the mixture of compounds contained in it. The process is extremely easy without any sorts of vulcanization or mixing. It is highly durable. Both rubber components and scraps can be recycled multiple times.

Another advantage of using recycled products is that it fetch you a great return in the end. It completely reduces traces of carbon foot print thereby reducing landfills.

Lusida Rubber Products is the ultimate producer of rubber components sold at reasonable rate.

Lusida Rubber Products, Inc specializes in the manufacture of rubber products. It is a process by which latex is gathered from a rubber tree. A groove is sliced deep into the bark of a tree using a hooked knife and later the bark is peeled off from the bark. Before tapping rubber, one should make sure that the tree is approximately six years old with six inches in diameter.

Rubber tapping does not pose threat to the forest since it does not involve trees to be cut down for the latex to be extracted. Jungle rubber is presumed to be the secondary forest. The primary objective of a rubber tapper is to eliminate a thin layer of bark from the tree. If it is done in an appropriate manner, tapping panel extracts latex for duration of about five hours.

The process of rubber tapping is executed during nights or early in the morning. As a result, latex would drip much before coagulating and sealing cuts. Additional chemicals are mixed to the latex cup in order to preserve the latex for a longer period of time. Natural coagulation is blocked using ammonia solution thereby enabling latex to remain in its liquid form.

Plastic bags that contain coagulant replaced cups across various plantations situated at Malaysia. This type of latex is primarily used as a raw material for latex concentrate.

Introduction to Elastomers
The term ‘Elastomers’ refers to long chain polymers that are capable of cross-linking. This process is known by the name ‘Vulcanization’.

The Lusida Rubber Products based in Pasadena, California aims at the distribution and supply of only superior quality rubber products.