APS Casing Spacers


Stainless steel, carbon steel and polyethylene casing spacers from Advance Products and Systems are the first choice in ensuring the integrity of a carrier pipe when installed in casing.

Casing Spacers

Mechanically speaking... casing spacers do the job they’re supposed to do.

Problems using wooden skids:

  • No long term integrity
  • Wood rots and pipe will settle
  • Non-insulating
  • Easily dislodged
  • Contributes to point loading of carrier pipe
  • Allows bacterial corrosion

Advantages of Casing Spacers:

  • Securely and uniformly supports the casing pipe
  • Electrically insulates
  • Removable
  • No casing filler needed


When comparing wood skids to casing spacers, we consider the potential liability arising from wood skids to be much higher.

Casing Spacer Range


Wood skids are:

  • Are difficult to install
    Require several workers to attach
    Are resistant to sliding, making pushing of the pipe more difficult
    Require annulus space filler
    Have a high failure rate

Whereas casing spacers:

  • Install easily and quickly
    Are installed by one person
    Slide easily - low coefficient of friction
    Require no backfill
    Have a proven reliability
    Provide long term corrosion protection


Environmentally, it makes more sense to use manufactured spacers, removing the need for wood. In some areas where special hard woods are specified, the growth of hardwood trees has rapidly diminished.

APS’s spacers are made of recycled metal, plastic and polyethylene, use no wood and therefore eliminate the need for the cutting down trees thus helping to preserve our environment.

APS’s casing spacers are made from recycled metal, plastics and polyethylene. We don’t have to build them that way but we feel that it’s important.

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