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What is Nitrile Bonded Cork

Nitrile Bonded Cork

Nitrile Bonded Cork - cork granules bonded together using Nitrile rubber to give resilience and flexibility

Nitrile Bonded Cork is made from cork granules which are then bonded together using Nitrile rubber, which creates a brown material with black pigments of rubber. Mixing these two materials produces an economical material which has the resilience and flexibility of rubber combined with the compressibility of cork. In addition it has;

  • Good resistance to oil and other fuels
  • Temperature resistance -20C to +120C

 

Where can it be Used?

With the properties outlined above, Nitrile Bonded Cork is understandably an excellent material for multi purpose gaskets and other sealing solutions. It is also often found in anti-vibration settings, roller coverings, valve covers, electrical transformers and general seals, in numerous automotive and other general engineering applications. It may also be used in construction and plant & machinery environments, where anti vibration insulation and expansion joints/building spacers are needed.

 

Are there any limits to using Nitrile Bonded Cork?

This material should not be used where weather resistance is needed, and it has limited high temperature resistance.

 

Fun Fact! 

Cork is harvested from the Cork Tree, found in the Mediterranean and is combinable with many different rubber-based products. As well as Nitrile, there are several other rubber materials which can be combined to produce rubber compounds, including Neoprene cork, Silicone cork and moulded cork. Each display different attributes and qualities to suit varying application requirements.

 

Need any material advice or assistance?

Here at Delta Rubber, we are able to supply numerous products using a large variety of different grades of Nitrile Bonded Cork, including sheet, strip, seals and gaskets.

Please contact us for our expert advice on materials for any project.

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What is Viton Rubber

Viton Rubber Sheet Tubing

Viton is a high performance fluoroelastomer subcategorised into four grades; A, B, F and specialty types.

Viton Rubber is a high performance fluoroelastomer which was created in 1957. Viton is a synthetic rubber which can be subcategorised into four grades; A, B, F and specialty types. The different grades have varying fluorine content – the higher the fluorine level the greater the chemical resistance. The main advantages and properties of Viton Rubber are;

  • Outstanding resistance to broad range of fluids including aggressive fuels and chemicals
  • Heat resistant from -25C to 275C
  • Durability and hard wearing
  • High performance and good resistance to compression
  • Weather resistant

 

Where is Viton Rubber Used?

Due to its broad range of chemical resistance, Viton provides the best fluid resistance of any commercial rubber and so it is used frequently in automotive and aerospace for a variety of products including O rings and sealsgaskets, sheet, hosing and tubing. In addition, its high temperature tolerances lends itself to commonly being the material of choice in the energy sector, specifically the oil and gas industries as well as more generic industrial settings.

 

Are there any limits to using Viton?

Whilst it heat resistance is high, Viton is less tolerant to extreme cold temperatures below -20C, so other materials might be a better alternative in colder environments. We offer expert advice on rubber types and product suitability, please contact us for assistance with your project.

It is also one of the more costly rubber materials available.

 

Fun Fact! 

It is often very difficult to tell which material many rubber products are made out of at first glance, as they are nearly always black. However one way of telling if a gasket, seal or O ring is made of Viton rubber – they are normally green in colour or black with a green mark on the outer edge.

 

Need any material advice or assistance?

Here at Delta Rubber, we are able to supply numerous products using a large variety of different grades of Viton rubber, including rubber sheet and roll, rubber strip, seals and gaskets.

Please contact us for our expert advice on materials for any project.

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What is Neoprene Rubber

Neoprene Rubber

Neoprene also known as polychloroprene, was the first synthetic rubber invented by DuPont in the 1930s, as an oil resistant alternative to natural rubber

Neoprene Rubber is also known as polychloroprene, and was the first synthetic rubber invented by DuPont in the 1930s, as an oil resistant alternative to natural rubber. It is composed of polymerized chloroprene (carbon, hydrogen and chlorine polymers) which gives it a large number of desirable properties:

  • Extremely tough – it is abrasion and tear proof
  • Heat (-35C- 125C), chemical and oil resistant
  • Excellent elastic metal bonding ability
  • Adhesive and resistant to solvents
  • Weather/ozone and water resistant

 

Where is Neoprene Rubber Used?

As Neoprene has so many varying attributes and qualities, it is a very frequently used material in a whole range of industries. Neoprene Rubber’s chemical inertness makes it extremely valuable for many industrial applications including corrosion resistant coating. It is also commonly used for sealing gaskets. In addition it is often the material of choice in electrical applications as an insulator.

As it is also abrasion, tear and oil/solvent resistant, Neoprene Rubber is commonly used in the Automotive industry (window/door seals, belts, shock absorber seals) and its flexibility and durability also makes it a popular material in the medical arena.

Lastly its weathering and heat resistance qualities mean it is frequently used in the marine environment as well as construction (window seals, gaskets, washers, pads, O rings and Extrusions).

 

Are there any limits to Neoprene?

Neoprene has few practical limitations as it displays so many varied properties. It is higher in price than many other general purpose synthetic rubbers, but often its enhanced performance in many areas such as weathering resistance, oil/chemical resistance and durability make it a cost effective proposition for industry. Another slight downside is that Neoprene is not resistant to oxidizing acids and some other chemicals.

 

Fun Fact!

Neoprene is often the material of choice used in spacesuits and can also be found in many clothing items because of its flexibility and resilience. It is often a regular material in contemporary fashion with the likes of Louis Vuitton, Karl Lagerfeld and Alexander McQueen using it in their collections.

 

Need any material advice or assistance?

Here at Delta Rubber, we are able to supply numerous products using a large variety of different grades of Neoprene rubber, including rubber sheet and roll, rubber strip, seals and gaskets.

Please contact us for our expert advice on materials for any project.

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What is Natural Rubber

Natural Rubber

Natural Rubber - this rubber is obtained from a latex sap which is found in the cells of rubber tree bark

Natural Rubber is obtained from a latex sap which is found in the cells of rubber tree bark. Its main attributes are;

  • Flexibility and strength – resistant to cutting, tearing and abrasion.
  • Water resistance as well as being resistant to some chemicals
  • It has excellent tack properties so is able to stick to itself and other materials.
  • Temperature tolerance is between -51C to 80C

 

Where is Natural Rubber Used?

There are numerous applications of Natural Rubber, where a high level of wear and tear is needed. Popular for engineering applications; rollers, anti-vibration mounts, bearings, springs and adhesives. Natural Rubber is also a material of choice in the automotive and aerospace industries due to its strength and is also used in heat resistance – typically used in tyres, extrusions, gaskets, seals and other automotive parts. In addition, because of its adhesive properties Natural Rubber is often the material of choice in construction.

 

Are there any limits to using Natural Rubber?

Natural Rubber has limited resistance to damage from heat, light and ozone exposure, so broadly speaking is intolerant to extreme weather conditions. In addition, Natural Rubber is intolerant to oil and non-polar solvents.

 

Fun Fact!

Natural rubber is made from latex emulsion collected from a tree called Hevea Brasiliensis – which is widely known as the rubber tree. It is planted in very large plantations in tropical countries in Asia, such as Thailand, Indonesia and Malaysia. An average rubber tree yields 19 pounds of rubber latex annually. Trees are six years old before “tapping” for rubber begins, where the bark is cut into a V allowing the latex to drip out, collected and processed, and they may be tapped for up to 28 years.

 

Need any material advice or assistance?

Here at Delta Rubber, we are able to supply numerous products using a large variety of different grades of Natural rubber, including rubber sheet and roll, rubber strip, seals and gaskets.

Please contact us for our expert advice on materials for any project.

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What is Nitrile

Nitrile Rubber

Nitrile Rubber - a type of synthetic rubber polymer, also known as Buna – N or NBR (nitrile-butadiene rubber).

Nitrile is a type of synthetic rubber polymer, also known as Buna – N or NBR (nitrile-butadiene rubber). It’s main attributes are;

  • Oil resistance
  • Durability and tear/puncture resistance
  • Good temperature resistance (from -40C – +108C)

 

Where Is Nitrile Rubber Used?

Due to its oil resistance, Nitrile rubber is an ideal material for the automotive industry, commonly the material of choice for fuel hoses, gaskets, seals, o-rings and other products where oil resistance is required, as well as rubber strip and matting. Also, as result of its inherent strength and resiliency, Nitrile is used in several safety related applications.

Nitrile Rubber is also often the material of choice in Aerospace – used for self-sealing fuel tanks and bladders, and in Healthcare for adhesives, sealants, sponges and foams.

More generically, because of its durable properties, Nitrile is also use across industry in roll covers, conveyor belts, hydraulic hoses and industrial plant & machinery.

 

Does Nitrile have any weaknesses/limits to application?

The major drawback to using Nitrile is that it is intolerant to weathering, ozone and sunlight, which makes it impractical to use for outside applications. It also has little flame resistance, and is intolerant to most chemicals. Another slight drawback is that it is relatively inflexible compared to other materials.

 

Fun Fact!

The higher the acrylonite (ACN) content in a grade of Nitrile Rubber, the higher the oil resistance will be and stronger/less permeable from gases it becomes. However there is a trade off as increasing the ACN content and therefore its oil resistance,  will result in a worsening of its low temperature tolerance.

 

Need any material advice or assistance?

Here at Delta Rubber, we are able to supply numerous products using a large variety of different grades of Nitrile rubber, including rubber sheet and roll, rubber strip, seals and gaskets.

Please contact us for our expert advice on materials for any project.

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What is Silicone

Silicone Rubber

Silicone Rubber is a hugely adaptable and popular elastomer made from silicon, carbon, hydrogen and oxygen

Silicone Rubber is an elastomer made from silicon, carbon, hydrogen and oxygen. It is hugely adaptable and one of the most popular rubber materials supplied by Delta Rubber. Its main properties are;

  • Very flexible and lightweight
  • Extreme temperature resistance (-60C up to +270C)
  • Environmental resistance from water, ozone, UV and general weathering
  • It is a sterile elastomer
  • High electrical insulation properties

 

Where is it Used?

As Silicone Rubber has so many useful and adaptable properties it is frequently used across many types of industries. Its weathering durability makes it popular in construction (adhesives, sealants, coatings) and the marine environment. As it is also a flexible compound it is also used in aerospace (tooling, coatings, adhesives, seals, gaskets), and its sterile and biocompatible nature makes it a popular choice in the medical and healthcare instances (tubing, adhesives, seals, catheters etc.) and food and beverage (tubing, seals, gaskets) sectors.

In addition, it is commonly used in the automotive industry due to its flexibility, which makes it a great shock absorber and its heat/oil fuel resistance.   Silicone, with its excellent insulation properties is also a frequent material of choice in the electrical/electronics industry

 

Are there any limits to using Silicone?

One of the major drawbacks from using Silicone is that is relatively expensive compared to other rubber materials available. It also displays a poor tear strength as it does not offer very high abrasion resistance or strength. In addition some silicone rubbers can be bulky or thick in appearance if aesthetics are a consideration.

 

Fun Fact!

During COVID-19 in Spring 2020, Delta Rubber supplied silicone straps and foam pads to a number of major PPE equipment manufacturers in desperate need of component supplies. We were cutting parts and dispatching the same day to support the production of 15,000+ much needed facemasks for the NHS, at the height of the pandemic. If you’re in the Healthcare sector, please view the Healthcare page on our website to see how we can help you with your project.

 

Need any material advice or assistance?

Here at Delta Rubber, we are able to supply numerous products using a large variety of different grades of Silicone, including Silicone rubber sheet, Rubber Strip, Seals, Gaskets and Extrusions.

Please contact us for our expert advice on materials for any project.

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