Sioux Chief 558-M23 CTS Pipe Eye Metal Stud Insulator 1/2 inch And 3/4 inch

Sioux Chief

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Sioux Chief 558 series PipeEye metal stud insulators shall be used where necessary to insulate CTS copper, PEX or CPVC piping in residential or commercial applications. Use on metal studs or galvanized metal brackets when 111/32 diameter hole is made. Optional colored grommets are available for easily identifying hot and cold water supply lines.

After tubing passes through the hole in stud or bracket, position insert around tubing and push insert through the hole until the tabs click and lock into place. Offset tubing hole in grommet allows for adjustable positioning.


  • Fits 1 11/32" holes in metal studs or brackets
  • Split design. Offset hole for adjustable tube position
  • Reduces noise caused by expansion and contraction
  • Flame retardant models meet UL94 V 2 flame rating
  • PlenumSafe models meet ASTM E84 25/50 Flame/Smoke Spread and UL94 V-0 flame rating
  • Compatible with copper, PEX and CPVC

Spec Sheet

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