Drain Test Plug

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Steel Test Plugs are designed for testing leaks, pressure and to seal off sections of pipelines.

The test plugs are developed with a vent tube for venting excess back pressure, which is suitable for testing pressure in sewage, waste, and stormwater pipes. Before selecting a test plug the maximum allowed back pressure should be pre-determined.

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Terms and Conditions
30-day money-back guarantee
Shipping: 2-3 Business Days

Function of the Test Plug


Crystal Rubber Factory is pleased to present our Steel Test Plugs, a testament to excellence and reliability in drain and sewer testing. Our intricately engineered test plugs are meticulously designed to accommodate a variety of applications, spanning from residential to commercial pipe systems.


Key Features:

  • Available in sizes from 40mm to 600mm
  • Thrust washers fitted as standard on all sizes
  • Zinc plated – corrosion resistant to 90 hours of salt spray test
  • Combines the economy of price with the strength of steel
  • Quality guaranteed
  • One-person, easy installation.

Sizes & Dimensions


Method of use

  • Ensure the correct size of plug is selected to perfectly fit the internal diameter of the pipe.
  • Thoroughly clean the installation point to remove any traces of grease or foreign material.
  • Precisely insert the plug square to the pipe wall for a secure fit.
  • Gradually tighten the peripheral nuts in a diametrically opposite order, ensuring equal tightness. Avoid over-tightening to prevent distortion of the clamp ring.
  • Double-check the sealing cap to ensure a tight seal. If the plug has a second outlet, make sure it is also securely sealed.
  • Remember, for your safety, always support these plugs with an engineered brace to withstand the calculated back pressure. Never use them without proper support.

Inquiry and more information

Kindly complete the form, and our team will promptly contact you within 24 hours to offer professional assistance.