Nitrile Rubber Mouldings
Nitrile Rubber Mouldings
One of the thousands of products supplied by ASG include a range of solid rubber mouldings, one type of which is solid nitrile rubber (NBR). Solid nitrile rubber mouldings are generally bespoke shapes often with complex profiles, a ribbed/textured finish or may require a lip or curved edge - for these reasons mouldings can not simply be pressed from sheet material and require specialist machinery.
All our rubber mouldings are made to order and are produced using a combination of samples or drawings provided by our customers, from which a tool or moulded cavity can be made. Nitrile rubber mouldings can be taken in an endless number forms including hoses, feet, buttons, housings and cases, , screws, combs, tubes and o-rings to name a few, all designed to provide protection, prevent the leakage or ingress of air, fluid or gas and to be aesthetically pleasing.
Product Enquiry
For information on Nitrile Rubber Mouldings please complete the following quick enquiry or call us on +44(0)1384 252555.
What Are The Characteristic Of Solid Nitrile Rubber
- Colour: Black (white or blue in food grade)
- Shore: 40 – 70 Shore
- Resistances: Oil, Water, abrasion/wear, petrol/fuel
- Temperature Range: -20°C to 70°C
- Thickness: made to order
Full technical data can be supplied upon request,
or downloaded from our online portal.
What Are Solid Nitrile Rubber Mouldings?
Nitrile rubber is sometimes also referred to as Nitrile butadiene or NBR rubber, which is a synthetic rubber produced from a copolymer of acrylonitrile (ACN) and butadiene. Nitrile rubber mouldings are produced using raw molten rubber compound and a mould or ‘die’ in which the rubber profile is formed and cured (set).
NBR rubber mouldings are available in a range of grades, hardnesses and colours, each with its own set of characteristics, properties and resistances to suit different exposures and environments - each produced using one of the techniques below:
Injection Moulding
Injection moulding is the process by which raw/uncured rubber material is loaded into a hopper or holding unit where it is heated to a molten state and then fed through a nozzle in pre-measured quantities into the mould/cavity. Pressure and heat levels are adjusted within the cavity causing the material to ‘cure’ and the moulded product is formed.
Compression Moulding
Compression moulding is made up of a top and bottom pre-heated steel mould/cavity into which raw material is poured in and the two halves are closed together.
This tool is heated in order to melt the neoprene compound creating the desired shape and the final product. Although this process is great for bespoke moulding, it can be very time consuming for high volume production.
Transfer Moulding
The transfer moulding process is the more complex of the three. The raw/uncured material or charge is loaded into the transfer pot, this pot is then heated as a plunger slowly enters the pot building pressure, forcing the melted rubber through the sprue or channel. The sprue leads to the mould cavity, this cavity is then filled with the melted rubber material forming the desired shape of the component. Once the raw material has cured, the moulding too can be opened and the formed part removed.
Benefits of solid nitrile rubber
- Water, mineral/oil, petrol, abrasion resistance.
- Can be formed into complex seals and extrusions or cut into bespoke parts
- Available in various grades and hardnesses
- Water Proof
- Excellent sea against gasses
- Excellent for automotive applications
The Advantages of Using Solid Nitrile Rubber Mouldings
Our customers will often opt for using mouldings made using solid nitrile rubber as the material brings many advantages, it is highly versatile and robust, combined with the high resistance to oils, gases, fuels, grease, water and most acids makes nitrile rubber highly sought after in many industries including automotive, construction, oil and aerospace.
Nitrile rubber mouldings are highly effective for sealing, keeping out dust particles and hazardous gases. It's a strong and durable material meaning it can be easily moulded and shaped into a desired profile without the risk of tearing or stretching the material.
Nitrile rubber mouldings are available in a range of colours and hardnesses (the shore hardness is measured using a shore durometer which indicates the level of resistance to indentation ,the higher number on the scale indicate a greater resistance - harder the material/lower number indicate less resistance- softer the material).
Nitrile rubber has some flame retardancy, and a working temperature range of -20°C to +70℃, recognised by its resistance to ‘swell’ when exposed to oils and fuel, therefore holding its sealing capabilities making these rolls a popular choice for using in the production of parts used where oil resistance is required including fuel gaskets and seals, automotive seals, o-rings, casings, hoses and rollers for use within the printing industry.
Different Grades of Solid Nitrile Rubber Available
Advanced Seals & Gaskets Ltd have a network of material suppliers and manufacturers, meaning we have access to various grades of nitrile rubber which include:
(British Standard ) BS 2751 Nitrile is higher quality synthetic elastomer compared to commercial nitrile in terms of it’s improved elongation at break, tensile strength and resistance to a broader temperature range of -30°C up to +110°C. BS2751 nitrile is manufactured in shore hardnesses of 40° to 80°.
Blue Metal detectable nitrile rubber is a synthetic elastomer which is manufactured with an additive visible to metal detector scanners. This grade of material has excellent tear and abrasion resistance, and is suitable for food, beverage and pharmaceutical applications as a way of detecting and reducing contamination.
Food Quality (FDA) Nitrile rubber is available in white or blue colour options, both conforming to EC & FDA regulations, for use within food and pharmaceutical processing industries where the material needs to be resistant to vegetable oils, animal fats, fish oils and greases.
Please contact us using the form below or by calling us on +44(0)1384 252555.