Trelleborg Forsheda Pipe Seals

Diamond Core Drills

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Accurate cored openings manufactured to Kor-N-Seal® specifications. Manufactured to meet specific cutting requirements. Manufactured inhouse — Milford, New Hampshire, USA Only new, premium quality diamonds are used. Fast, efficient drilling. Close tolerance allowing trouble-free seal installation.

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  • Accurate diameter control
  • Fast drilling & extended life
  • Shipped from stock

Diamond core drill recrown services are available. To be recrowned, the core drill barrel must be in reusable condition. Services include:

  • Initial inspection
  • Barrel reconditioning
  • New segment installation
  • Repainting
  • Quality control inspection
  • Prepaid overland return freight.
  • A recrowned core drill is 30% less than the cost of a new new
  • diamond core drill


Quick-Change Adapters are available for our A-Flange core drills. They greatly reduce core drill change time and are designed to fit NPC Hydrokor coring machines.