Filcoflex now offers an additional padding seal on flange surfaces and end cuffs of flexible connectors and sleeves to provide a perfect seal combined with easy installation. Available in a number of soft rubber materials, for hose clamp cuffs and bolt pattern flanges.
Flange or Cuff paddings are most often a silicone gasket that is fixed to the flange of the flexible sleeve. Other materials are also available as you can find in our “available materials” table. Most cuff paddings or gaskets are a different material as the flexible sleeve or are not thermoplastics and therefore cannot be welded to the flexible sleeve flange or cuff.
By stitching the padding to the cuff or sleeve it makes it easier for operators and mechanics to fix the sleeve to the machinery because it keeps a better shape. Also the padding cannot be installed wrong because it is fixed in the right place. Factory employees easily recognize how to place the sleeve, and the right slack / extra compression of the sleeve when fitting it speaks for itself.

The surface of the padding and that of the flexible need to be able to move over another when clamping down the hose clamp or bolted flange. That is why Filcoflex stitches the flange or cuff padding to the flexible sleeve along the outer perimeter of the flange or cuff. Once the flanges or hose clamps are installed or the stitching is beneath the hose clamp or the stainless steel flange the yarn or the stitching cannot collect any dust or dirt, and will not be contaminated. The stitching is only exposed when the clamps or flanges are removed again.
Polyurethane padding is welded to the original sleeve cuff or flange, and mostly serves the purpose of providing a more robust cuff or flange, not so because of the softness seeing Poly Urethane is quite hard.

Using a Flange padding you also provide a good surface to clamp in another explosion cover sleeve such as the Filcoflex AWSR2ri aramid with silicone coating explosion pressure covers. The padding allows for the stitched seams of the aramid cover to be airtight using the softness of the flexible sleeve flange padding.
Hoseclamps can be air and dust tight using a cuff padding. Cuff paddings for hoseclamp fittings are always positioned around the outside. This lets the hoseclamp clamp down in the softness of the padding and provide an air-, powder- and fluid-tight seal. Large diameter flanges are easier to fit and made leak free using flange padding.
Filcoflex offers a number of flange padding materials, some are available in various thicknesses.
The encasing can also include an NFC chip together with the printed label.
*Alternatively the encasing can also be made in PVC film Filcoflex products.
** Other items can also be printed to your design. Faded colors are not possible, only solid colors.
| Material | Color | Food contact compliant | Padding |
|---|---|---|---|
| Silicone | Translucent | Food contact compliant | 2 mm / 3 mm* |
| EPDM | Black Antistatic | Food contact compliant | 2 mm / 3 mm |
| Polyurethane | Transparent | Food contact compliant | 1 mm / 1.5 mm |
* Silicone 2 mm and 3 mm are the standard flange padding seal and cuff padding seal
Other materials available on request.