Nitrile vs Viton® - What is the Difference? (2024)

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Polymax are proud to be the largest online distributor of O-rings in the UK. With over 30,000 different materials and sizes available, our unique O-ring search tools help you find your match in seconds.We are also able to supply many other non-standard compounds on a short lead time. Polymers such as Silicone, EPDM, Kalrez®, FFKM, HNBR, PTFE, XNBR, PU, CR and more. We can provide a range of shore hardness (40 to 90 ShA) and a variety of colours.

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Oil seals are commonly used in driveshafts, crankshafts and hydraulic cylinders where a rotating shaft is lubricated by oil or grease. The seal works like a cap, covering the clearance between the shaft and housing, stopping fluids from leaking whilst preventing containments from entering the chamber. If you are replacing a worn part because you have identified a leak, refer to your machinery handbook to find the type of oil seal you require. Whilst this is not always possible there are a few guidelines to help you get the right seal for the job.

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Rubber cord is manufactured when rubber is forced through a die of the required cross-section under pressure of an extruder. Rubber cords come with varying durability to different types of exposure. Common types include EPDM, Nitrile (NBR), Neoprene, and Silicone cords. They are used in various industrial applications including seals, motors and associated machinery, construction equipment, and portable tools and appliances, among others

Polymax can supply Rubber Cords in various different sizes, metric and imperial. Rubber Cord is available on our on-line shop in the following materials; Nitrile (NBR), FKM (Viton), EPDM, Silicone 60sh (various colours) silicone sponge and neoprene sponge rubber cord.

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A rubber sheet is a sheet of rubber or a cloth coated with rubber. It comes in various types, including natural rubber, neoprene rubber, nitrile rubber and EPDM rubber. Rubber sheeting serves a variety of purposes, with industrial, commercial, and residential applications, and is commonly used for soundproofing, waterproofing, and packaging.

Our Polymax rubber sheeting range includes all commercial and specialist polymers including; NBR rubber sheet, EPDM rubber sheet, NR rubber sheet and have specialist polymers including silicone rubber and viton rubber sheets. Rubber sheets can be cut to your requirements.

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Silicone is a synthetic elastomer which provides unique physical properties in compassion to carbon-based rubber materials. It is the preferred choice in the food, beverage and medical industries due to its low toxicity, thermal stability and resistance to micro-bacterial growth. Some grades of silicone rubber can remain flexible down to temperatures as low as -100°C and as high as 315°C.

The Polymax silicone product range includes solid sheeting, sponge or foam sheeting, cord, sponge strips, O-rings, tubing, hoses and edging strips. We also provide a large collection of Momentive primers and adhesives.

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Rubber adhesives are flexible, high-strength bonding agents. Rubber adhesives include acrylonitrile, styrene, natural rubber, neoprene, and polyurethane, among others. Rubber-derived contact adhesives may be used with various surfaces like glass, metal, and natural fibres.

Polymax supplies Mapei Adesilex rubber adhesives. They are ideal for use with our rubber flooring and matting range. We sell a variety of different types to suit indoor, high humidity, or external applications.

This entry was posted on 5th February 2016 by cameron.

This article will explain the main differences between Nitrile vs Viton®. Two of the most commonly approved elastomers, Nitrile (popularly referred to as NBR or Buna-N) and Viton® (Fluorocarbon rubber). Both materials are a great choice for general industrial use, they offer excellent compression set resistance and have a versatile set of properties list of applications and properties.

Nitrile vs Viton® - What is the Difference? (1) Nitrile vs Viton®

However, both these seals have different properties, types of application and characteristics. When considering the use of Nitrile vs Viton® here are some points to consider:

Nitrile Rubber

  • Temperature: Nitrile is effective within a temperature range of -30°C to 100°C.
  • General Suitability: Used for general purpose applications requiring resistance to aliphatic hydrocarbons, petroleum oils, water and hydraulic fluids.
  • Environmental Properties: Nitrile vs Viton®is not resistant to degradation from weather and ozone exposure. Designed to resist most oils and lubricants, more importantly petroleum based lubricants, these seals have other benefits, such as superior abrasion and tear resistance, making them suitable for heavy duty industrial applications.
  • Applications: A cost effective product, that works well with constrained temperatures and chemical resistance.

Viton® Rubber

  • Temperature: Viton® seals can withstand temperatures up between -20°C to 210°C. Viton® seals are prone to failure below -15°C in dynamic applications, as they become inflexible and hard.
  • General Suitability: Viton® is best suited for diverse sealing jobs that require high temperature and chemical resistance. Applications involving contact with petroleum oils, acids, silicone fluids and gases, halogenated hydrocarbons (trichloroethylene and carbon tetrachloride), aromatic hydrocarbons usually have seals and o rings made of Viton®.
  • Environmental Properties: Viton® O-rings and seals have a wide range of chemical resistance (involving mineral acids, fuels, and oils) and this material is also highly resistant to oxidation, UV exposure, fungus, weather, ozone, and mould. This makes Viton® far superior to Nitrile in these regards. They are also designed to resist most oils and lubricants, more importantly petroleum-based lubricants.
  • Applications: Viton® functions well in different automotive, chemical and appliance-processing industries.
  • Cost: As an approximate guide, Viton® compound is ten to fifteen times more expensive than NBR. However, we stock both NBR and Viton O-rings and seals AS/BS, metric, French, German and other metric series at Polymax.

View our extensive Viton® and Nitrile range

As Viton® properties are quite different from nitrile rubber properties.It is crucial to consider the pros and cons of both materials, specifically in the context of their application. You can also consult our chemical compatibility guides or call Polymax on 01420 472000 for more information.

*Viton® is a registered trade mark of Du Pont Dow Elastomers

This entry was posted in Viton® O-rings, Nitrile O-rings, O-rings on 5th February 2016 by cameron.Next Post →

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