Alveo Foam Washers

One of the most popular material types available from Advanced Seals & Gaskets Ltd is Polyethylene, available in numerous grades, densities and colours, which can be cut and supplied into a range of products including washers.  One such type is Expanded Cross Linked  Closed Cell Polyethylene, which is also sold under the trade names Alveolit® or Alveo.   

This physically cross-linked, closed-cell polyethylene foam is produced in densities of 33kg, 67kg and 100kg in continuous roll lengths in thicknesses between 2mm to 10mm, however, greater thicknesses can be manufactured in sheet form from which washers can be cut.   Alveo Foam washers are manufactured on-site using drawings or measurements provided by our customers, with whom we work closely to ensure the final product is to their exact specification.

Depending upon the size and quantity of washers required, one of many presses or CNC machines can be used to manufacture the final product -  from one-off samples to multiple thousand batches runs, we have a machine designed to quickly and accurately produce perfectly formed washers every time.

What are Alveo Foam Washers?

Alveo is a physically crosslinked, closed-cell polyolefin (a family of polyethylene and polypropylene thermoplastics)  foam produced in continuous sheets in a three-stage process: extrusion, crosslinking, and vertical foaming produced by the process of polymerisation of ethylene and propylene using oil and natural gas.

Alveo polyethylene is manufactured in a range of densities, in black (anthracite) or white colour options and with the advantage of being easily split or laminated in order for us to offer non-standard thicknesses and then cut into a variety of finished parts including washers.  

Alveo Foam washers are a flat ring with an outer diameter (OD) and inner diameter (ID) measurement, cut from a sheet of material which is placed between two surfaces creating a level surface, acting as a spacer, seal or between nuts and bolts to spread the pressure when tightened.   

Manufacturing washers in-house even means we can supply them in a plain or self-adhesive backed finish and even laminate multiple types of material together to create bespoke and unique variations.

Alveo Foam Washers

Product Enquiry

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






    Product Specification & Key Characteristics

    • Colour: Black (anthracite) or white
    • Cell Structure: Closed Cell
    • Available Densities:  33kg, 67kg and 100kg
    • Available Thicknesses:  2mm to 10mm (skin on both sides)  can be split or laminated to create non-standard options
    • Temperature Range: -60 to +90
    • Resistances: most chemicals, ozone, UV, mildew and bacterial growth

    Full technical data can be supplied upon request,
    or downloaded from our online portal.

    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 Alveo Foam Washers

    Samples can be submitted for testing upon request.

    Call now for sample requests or further help.

    Why use Alveo Washers?

    Alevo polyethylene foam is manufactured with a fine regular close cell structure that is soft and flexible, with skin on both faces.  It is manufactured in a range of standard thicknesses, but can easily be split or laminated to create non-standard thickness, and converted into a range of products including washers.  

    Alveo polyethylene foam offers low water absorption, excellent vapour permeability with good chemical, ozone and UV resistance.    It’s an odourless material, offering a wide operating temperature range which can also be manufactured and supplied in a flame retardant grade.  

    Alveo Foam washers are often taken for use with sealing against dust, air and moisture, gap-filling between uneven surfaces, for reducing unwanted noise and vibration or for use between fixtures and fittings.

    This soft compressible foam creates an excellent seal as its closed-cell and easy to compress, which is essential for an effective washer where they are needed to fill deformities and gaps.

    Advantages of using Alveo Washers

    Using Alveo polyethylene for the production of washers offers countless advantages, the material is highly durable and resistant, inert to many chemicals, weather resistance and has excellent insulation properties and a wide operating temperature range of  -80°C to +100°C

    These qualities make Alveo washers highly desirable in a variety of applications such as packaging, protection and cushioning with automotive, construction and manufacturing.

    Alevo polyethylene is manufactured in continuous rolls, in a range of roll widths and thicknesses, however, the material can be easily converted into a range of converted parts such as washers and other seals for use in many gap-filling, air and moisture sealing, anti-rattle or vibration and packaging applications. 

    Benefits of using Alveo Polyethylene Foam

    • Closed-cell and cross-linked structure makes the material impermeable to air and water 
    • Good temperature resistance.
    • Lightweight and durable.
    • Odourless
    • Inert to many chemicals
    • Good weather resistance

    Different Grades of Polyethylene Available

    Having a network of manufacturers and suppliers, allows ASG to offer a full range of polyethylene materials, many of which are readily available from stock for a quick turnaround.  Below is just a selection of some of our popular polyethylene material types we can offer:

    • Polyethylene (Block foam)
    • Anti-static
    • Ethafoam
    • Eva foam
    • Flame retardant
    • Chemically cross-linked 
    • Plastazote
    • Stratocell
    Have a Question about Alveo Foam Washers?

    Please contact us using the form below or by calling us on +44(0)1384 252555.