Bolt Type Medium Pressure Test Plug

For Simple Reliable Testing Without Tube Wall Damage


  • Pressures to 250 psi (17 Bar)
  • Sizes for 1/4" to 10 1/2" (6.4mm - 266.7mm) Pipe and Tube I.D.

EST's Bolt Type Medium Pressure Test Plugs are designed for simple, reliable testing of pipe and tubing, without the tube wall damage associated with other test plugs. That's because our Bolt Type plugs feature a neoprene seal - the only part of the plug that comes in contact with the tube I.D. To use, simply install into the open end of the pipe or tube and tighten the large compression nut to expand the seal element. Then begin testing.

Features & Benefits

  • Heavy-Duty Construction: Corrosion resistant plated carbon steel with neoprene seal elements.
  • Versatile: Wide range of available sizes. For larger sizes or special configurations - Contact factory.
  • Brass Anti-Gall Washer and Thread Lubricant: Protects threads and facilitates test plug installation and removal.
  • Long Wearing Full Disk Seals: Extend plug life.
  • Easy to Maintain: Replacement seals readily available.
  • Optional Pipe Cap: Allows plug to be used in either a ported or solid configuration.
  • Super Stock: Sizes from 1/2" to 8" in Sch 40 and 80 are available for same day or next day shipment.
  • Optional Construction: 300 Series Stainless steel. Seals available in Silicone or Viton®.
  • Quality Assurance System: Manufactured under a Quality Assurance Program certified to ISO 9001 and several U.S. nuclear industry standards including ANSI N45.2, NQA-1, 10CFR 50 Appendix B, and 10CFR 21.                                
Bolt Type Medium Pressure Test Plug
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