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Cover Gasketing

Cover Gasketing

For making Dedicated Fixtures for the smallest of parts. Cover gasketing allows for maximum vacuum surface area based on the shape of your specific CAD part.

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Cover Gasketing products were created for those customers that are making dedicated fixtures, but for the smallest of parts. These small parts, those with tight angles and/or or narrow portions, make it difficult to gasket for using a radiational Dedicated Fixture / In-Board Gasketing approach due to the size constraints. So there is no better way to MAXIMIZE vacuum surface area than by utilizing All Star’s Cover Gasketing approach.

products cannot hold due to the limited surface area of the part. in this case for the smallest of parts. are for small and/or narrow parts that would be difficult to gasket if using one of the other methods because of the limited surface area of the part. By covering the entire fixture with gasketing, users can route parts directly into the gasketing, and then create custom vacuum pocket areas to match the size and shape of their parts.

Cover Gasket can be supplied in pre-sized sheets or custom widths in all thicknesses and densities. Things to keeping mind when evaluating Cover Gasketing:

  • Just like with On-Board Gasketing, the rule of thumb is the thinner the better. The thinner the gasket, the less the Jell-O effect that gasket will cause. But enough thickness is needed to counteract for the variances of the materials attempted to be vacuum clamped.
  • For that reason, many customer routing plastics and other extremely flat surfaces will use the 1/32″ thickness, know as the CR 03 products.
  • Many customers cutting wood products, due to the slight variances, will use the 1/16″ thickness, CR 06 being most common.
  • 1/8″ thick products best for very uneven surfaces.
  • A non-porous material should be used for the fixture board to prevent vacuum loss.
  • Cover Gasketing products are offered as SBC (Spoilboard Covers that are typically enough material to do a 4×8 board). The ZBC (Zone Board Cover) are custom width rolls at extended lengths. This is a great option once a shop starts utilizing a specific size fixture board often. And the LFC (Lineal Foot Cover) for ordering by the square foot.
  • The Cover Bit is great tool that can be used for cutting the gasketing sheet
  • The SBC CR 0656 is the most commonly ordered Cover Gasketing product.


    • Dedicated Fixture environment
    • Small repetitive parts
    • Parts with excessive holes
    • Uses existing CAD work, offsetting to create custom die-cut gasket sheet
    • Maximizes vacuum surface area
    • Low set-up time as CNC does work
  • Who is Cover Gasket intended for?

    Anyone looking to make Dedicated Fixtures. Specifically, those looking to do repeat cuts of the smallest of parts, tight angles, and/or anyone with multiple holes throughout the

  • Cover Gasket Guidelines and Tips

    • Essentially an On-Board Gasketing product, same rules apply
    • Engraving tool allows for accuracy and clean edges
    • Off-cuts and plunge holes need to be accounted for
  • How to utilize Cover Gasket

    Using a non-porous fixture board to prevent unnecessary vacuum leaks, the self-adhesive Cover Gasket is laid out across the Fixture Board. By offsetting the existing CAD program, cut parts directly through the gasket sheet making custom vacuum pockets that completely match the part for maximum custom clamping.

  • What Cover Gasket Product is best for me?

    We have options in fitment size and lengths, to custom fit or match the dimensions of your workspace. Our experts can help you select and guide you to the right product just for you.

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    The First in CNC Vacuum Gaskets and Vacuum
    Clamping Techniques
    13355 Grass Valley Ave Suite B
    Grass Valley, CA 95945
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