Plastic / Urethane Hole-Formers 

  • Available for ANY Round Wall or Flat Wall
  • CUSTOM MADE in our Machine Shop
  • Ideal for Small Hole Needs
  • Any Mounting Option Available:
    – Coil Insert
    – Magnet
    – Thru-Hole W/Bolt Assembly
    – ETC.


Small Custom Solid Urethane


Round, Plastic Hole-formers – a variety of attachment methods are available
(Magnetic attachment shown above)



ANY diameter, thickness, and taper are available


Custom Urethane Mandrels (Septi-Seal gasket mandrel shown)


Blackthorn’s Urethane Hole-Formers used in a Dry Well Form


Custom Solid Plastic Rectangular Blockout