Betaflex Washers

Advanced Seals & Gaskets Ltd produce and supply hundreds of non-metallic washers. By having a network of reputable material suppliers we are able to source materials of the highest quality from across the world for use in specialist sealing, insulating and gasketing applications.

One such material is Betaflex Fibre Jointing which is usually manufactured in continuous rolls 1100mm wide and in various thicknesses from 0.25mm, 0.4mm, 0.5mm, 0.8mm up to 1.6mm from which betaflex fibre jointing washers can be cut or pressed. The quality of the cut and finish of the washer is just as important as the material used to ensure its reliability, therefore we ensure our in-house manufacturing team follow customers' drawings or samples to create an exact match. From a small sample quantity to multi-thousand batch runs, we have a machine to quickly and accurately produce perfectly formed washers in a range of sizes.

Our state of the art onsite conversion facilities consists of various saws and presses, allowing us to take rolls of Betaflex material and convert them into finished cut parts including washers as loose parts or kiss-cut on a roll - all of which can be supplied laminated with a choice of our many self-adhesives.

Betaflex Fibre Jointing Washers

Product Enquiry

For information on Betaflex Washers please complete the following quick enquiry or call us on +44(0)1384 252555.






    What Are the Key Characteristics of Using Betaflex?

    Temperature: Short term operating Temperature up to 180°C

    Colour: black/dark grey

    Thicknesses available: 0.25mm to 1.6mm

    Density: 62.4 lb/cu.ft

    Resistances: oil, petrol, fuel, water, antifreeze

    Help and guidance

    If you would like to speak to a representative to discuss your specific application or requirements please call our sales office direct on 01384 469100, alternatively you can send an E-mail. Simply click on the link and forward us your details along with your question and we will contact you immediately.

    Samples - Technical Betaflex Washers

    Samples can be submitted for testing upon request.

    Call now for sample requests or further help.

    What Are Betaflex Fibre Jointing Washers?

    Washers are a flattened ‘ring’ of material, manufactured using Outer Diameter (OD), Internal Diameter (ID) and the thickness measurements. Betaflex fibre jointing washers are placed between 2 surfaces to reduce friction, prevent unsteadiness, to create a smooth, level surface for nuts or bolts to rest on (or to allow for a better fit) and to create a seal.

    Betaflex is an asbestos-free cellulose based paper with an NBR (Nitrile) binder, recogniseable by its dark grey/black colour. Fibre jointing materials like Betaflex are constructed from fibre strands held together with a resin or binder, creating a strong and compressible material, which can be supplied in pre-cut finished parts such as betaflex fibre jointing washers or taken in sheet and roll form where they give the customer and end-user the flexibility to be able to cut their own parts out as and when they are required.

    Why Use Betaflex Fibre Jointing Washers?

    Washers made from Betaflex Fibre jointing can be found used in a similar way as a gasket where they cushion and seal. Choosing the right material when designing seals such as washers has become very important for industries where they need to ensure harmful chemicals and emissions are kept contained or where there is risk of electric shock as Health & Safety regulations are tightened.

    Betaflex is a high quality material offering low compressibility and good elastic recovery, with washers often being used in industrial sectors where there is a risk of leaks of or exposure to oils, petrols, diesel fuel, water, antifreezes etc which would cause decomposition and damage to other materials, resulting in the seals failure.

    Betaflex washers can often be found as seals where there is high volume fluid flow such as within plumbing , industrial pumps or automotive transmission seals.

    The Benefits of Using Betaflex Fibre Jointing

    • Can be machined into a range of components
    • Low compressibility
    • Excellent electrical insulating properties
    • Resistance to oil, petrol, fuel, water, antifreezes, etc
    • Short term operating Temperature up to 180°C

    Other Grades of Fibre Jointing Available:

    When choosing ASG for your fibre jointing applications, such as our betaflex fibre jointing washers, you are sure to be offered a number of material options, thanks to our network of material manufacturers and suppliers - some of our other popular materials include:

    Ceramic Fibre material is constructed using ceramic fibres and an organic binder, designed for extreme temperature applications reaching up to 1250℃. Ceramic fibre pads have excellent strength and flexibility, excellent insulating properties and thermal resistance.

    Gasket Paper pads have a high resistance to petrol, oil and water, therefore often utilised within automotive applications (within fuel/oil pumps and filters). It is not recommended for industrial use due to its lack of resistance to chemicals and heat.

    Graphite foil is available in a number of grades, and is an excellent sealing material suitable for high temperature and high pressure liquid, steam, gas and chemical transfers. Graphite foil pads can be used where there is exposure to oil, petrol and gas - even nuclear or power generation applications.

    Millboard is made using a material composed of ceramic fibres, clay, insert fillers and binders. Although these padss can not be used with direct flame, they can handle temperatures of up to 1037℃.

    Non-asbestos fibre - Non-asbestos fibre has been designed to not only replace the original ‘Asbestos’ material, but also to be a more superior product with countless desirable properties as the material is manufactured in various formulations, each giving a combination of properties suited for different applications. Non-asbestos fibre can be blended with nitrile, thus giving fuel and oil resistance properties, with EPDM to create a potable water safe product or with PTFE for chemical resistance, they can also be supplied with a graphite coating to give steam and non-stick resistance properties.

    Presspahn is manufactured using kraft wood pulp, giving its distinctive ‘buff brown’ colour. Presspahn pads have excellent physical and mechanical properties, generally used as electrical insulation.

    Vulcanised fibre material is laminated plastic composed of only cellulose, with great mechanical strength and conformability. Vulcanised fibre gaskets can work in temperatures up to 110 ℃ anything more will result in the material fibres burning or breaking down.

    Advantages of Betaflex Fibre Jointing Washers

    Using Betaflex fibre jointing washers offer a number of advantages to users. Betaflex can be used within temperatures of up to 180°C (short term) and is suitable for sealing within industrial sectors and applications where there is a risk of exposure to or leakage of oils, petrols, diesel fuel, water, antifreezes, etc.

    Betaflex fibre jointing components such as washers can also be used for electrical insulation applications where they restrict the flow of electric current, ensuring the health & safety of users and people around the appliance.

    Betaflex fibre jointing materials are manufactured in roll form, giving customers the option and flexibility of taking the material in full rolls, cut sheets or converted finished parts, which in return saves the customer money and reduces waste as there is no need for them to take excess material.

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