• fiberglass hole former
  • concrete manhole fiberglass hole former
  • fiberglass hole former
  • Manhole former for concrete structures

Fiberglass Hole Formers

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Press-Seal Fiberglass Hole Formers are designed to make precise entry holes for pipe penetrations in concrete structures. Made with fiberglass cloth (rather than chop), they include heavy wood bracing and feature a smooth, low-taper surface for easy release. Fiberglass Hole Formers are available for manholes, straight wall structures, and for offset holes in lift stations and wet wells. Sizes from 8″ to 56″ diameters in a variety of wall thicknesses. Also available with high-strength magnets for convenient mounting to form cores.

Features and Benefits

  • Smooth surfaces and low draft make removal easy.
  • Heavy wooden reinforcement.
  • Made of tough, durable, long-lasting fiberglass.

For Standard Manholes

  • Available in diameters from 8” to 56” (200 – 1422 mm).
  • Manhole ID’s of 36”, 48”, 60”, 72”, and 96” (900, 1200, 1500, 1800, 2400 mm).
  • Manhole wall thicknesses of 4”, 5”, 6”, 7”, and 8” (100, 125, 150, 175, 200 mm).
  • Special wall thickness is also available.

For Straight Wall Structures

  • Available in diameters from 8” to 56” (200 – 1422 mm).
  • 3” to 8” wall thickness (standard). (75 – 200 mm).

Parallel Hole Formers

  • Provides parallel 8” dia. or 11” dia.holes (200 mm and 275 mm).
  • Standard 26.25” center-to-center spacing (667 mm).
  • Available for 48”, 60”, 72”, 84” and 96” ID structures (1200, 1500, 1800, 2100, 2400 mm), such as wet wells, lift stations, pump stations, etc.

Magna-Former Magnetic Holding

  • All fiberglass hole formers can be ordered with Magna-Former magnetic holding system.

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