Reticulated Polyurethane Foam Washers

Thousands of foam washers are manufactured and supplied by Advanced Seals & Gaskets Ltd each week, with Reticulated Polyurethane foam washers being just one of the many materials available.  Reticulated Foam is also known in the industry by the names Retic foam, Reticulated PU, open cell PU, ‘Filter foam’ or Skeletal Foam due to its open cellular structure available in a range from 10ppi through to 100ppi.    Reticulated Foams and the washers cut from the materials are recognisable by their net or mesh like appearance - especially those between 10ppi and 30ppi where the cells are larger. The holes that form the composition of these  these foams vary in size and are referred to as ‘pores’, the material grade is defined by the number and size of of these pores within a square inch of material, hence the term PPI (pores per inch) - these cell or pore sizes range from 10PPI which is a very coarse grade up to 100PPI which has a more compact structure and softer feel.  The lower the PPI, the lower the porosity - allowing more fluid and air flow, in contrast, the higher the PPI, the higher the porosity where the smaller cell and tighter cell structure results in air and liquid flow reduction - this is more the 80ppi - 100ppi range.

Reticulated foams are manufactured in large blocks or ‘buns’ which are held in stock ready to be split down into sheets from which washers can be cut. Reticulated filter 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 batch runs, we have a machine designed to quickly and accurately produce perfectly formed washers everytime. Depending upon the size and quantity of pads required, one of many presses, bandsaws or CNC machines can be used to manufacture the final product, from one off samples to multiple thousand batch runs, which can be supplied as loosely cut parts, or kiss-cut on rolls  -  where a high quantity is required or for use on fast paced assembly lines. Our reticulated Polyurethane foam washers can be supplied in a plain finish, laminated in layers to create greater thicknesses, laminated to other materials or coated with a choice of self-adhesives and foils prior to the washers being cut.