Nitrile Seals

What are Nitrile seals?

Nitrile seals can also be known as Buna-N,  Nitrile Buna,  Acrylonitrile Butadiene Rubber and Nitrile Butadiene Rubber (NBR) . They are made from oil-resistant synthetic rubber produced from a co-polymer of acrylonitrile (ACN) and butadiene.  Indeed one of the most important factors in the properties of NBR is the ratio of ACN to butadiene. The more ACN, the higher its resistance to oils, but the lower its flexibility. Trade names include Perbunan, Nipol, Krynac and Europrene.

What are some common NBR applications?

Nitrile seals, gaskets and mouldings are an economic choice for applications requiring high resistance to oil and fuels. It follows that the main uses are in fuel hoses, rubber gaskets, rollers, and other products in which oil resistance is required. However, due to it’s versatility Nitrile is also used for parts requiring resistance to heat, abrasion, water, and gas permeability.

 

Nitrile rubber mouldings

Nitrile Rubber Specifications

Hardness: Shore A
30-90
Tensile Strength PSI
Good 200-3000
Tear Resistance
Good
Impact Resistance
Good
Compression Set
Good
Low Temperature
-30°C
High Temperature
120°C
Intermittent High
150°C
Weather and Sunlight
Poor
Water
Excellent
Abrasion Resistance
Excellent
Solvent Resistance
Good to Excellent
Oils and Gasoline
Good to Excellent
Adhesion to Metals
Good to Excellent

Why choose custom versus standard Nitrile seals, gaskets or mouldings?

DP Seals manufacture custom parts only. If you are currently using standard rubber gaskets, seals or mouldings, but have some level of dissatisfaction with results, read our article with nine great reasons to trade up to custom solutions!

NBR material expertise

At DP Seals we pride ourselves on being able to provide specialist advice in selecting and developing exactly the right blend of materials to meet a vast range of performance requirements.

We also maintain a large quantity and variety of quality raw materials in stock, enabling us to offer fast turnaround and provide for tight deadlines.

The information provided here is only a guide to Nitrile’s primary characteristics and uses. The relationship between material, product performance and blend options is complex.

Below you’ll find many free resources to help you think about material selection and we are always on hand to discuss your requirements and provide expert advice.

Our most commonly used NBR material

Handy Product Development Resources

Customer testimonials

“The level of customer service you provided exceeds the level of most companies in the world today. Outstanding. Simply Outstanding. ”
Colleen Pray : Cubic

Read more customer testimonials

Find out more

  • Speak to our Material Technologists for advice on all of your rubber gasket, seal or moulding needs on +44 (0)1202 674671