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How to Successfully Install a Gasket

Gaskets may seem easy to install, but a lot of detail and skill goes into ensuring a tight seal and long-lasting application. 

Lewis Peters - Job Role

Gaskets may seem easy to install, but a lot of detail and skill goes into ensuring a tight seal and long-lasting application. 

Understanding the best practices for installing gaskets can save you a lot of time, stress, and money down the road. 

Today, we’ll provide you with the best tips and tricks for ensuring a successful gasket installation. From choosing the right supplies to properly tightening bolts, our guide is designed to ensure the process runs as smoothly as possible.

1. Preparation

Preparation is a key component to ensuring a successful installation. 

Begin by cleaning the flange surfaces of any dust, debris, or old gasket material. Use a brass wire brush to clean the grooves thoroughly. 

Then, inspect the flange, nuts, and bolts for signs of corrosion, such as cracks, warping, or rot. Replace any faulty parts to prevent potential leaks.

Then, gather the following tools:

  • Calibrated torque wrench or hydraulic tensioner
  • Brass wire brush
  • Lubricants for bolts
  • Gaskets 
  • Calipers for measurements 
  • PPE (safety glasses and gloves)

2. Selecting the Right Gasket

Choosing the right gasket is crucial to ensure a secure and long-lasting fit.

The gasket’s inner diameter should match the outer diameter of the flange you’re sealing. Experiment with different gaskets to find the right one which fits properly within the flange’s outer dimensions.

Bolt holes on the gasket should be the right size to facilitate simple installation and accurate centring. Select a gasket material that is appropriate for the environment, taking into account the pressure, temperature, and kind of media that needs to be sealed. 

Read more about choosing the right tubing material here.

3. Installing the Gasket

Once you have gathered the necessary materials and chosen the right gasket for your needs, it’s time to get into the installation process:

  • Align the flanges: Align the flange faces and bolt holes properly before inserting the gasket. Carefully position the gasket between the flanges, aligning it with the bolt holes.
  • Insert the gasket: When holding the gasket, avoid touching the sealing surfaces of the gasket to maintain cleanliness. Ensure that the flange surfaces are free of debris and any lubricants.
  • Hand-tighten the gaskets: Hand-tighten the bolts to secure the gasket in place. This will align the flanges in preparation for the torque application. 

4. Tightening the Bolts

Using a calibrated torque wrench, tighten the bolts in a criss-cross pattern. 

  • First pass: Tighten all the bolts to one-third of the final torque value. 
  • Second pass: Then, increase it to two-thirds of the final torque value. 
  • Third pass: Lastly, tighten them to the full specified torque value. 

Tighten each bolt in a clockwise direction one last time to ensure they all have the same torque. After this, apply lubricant to all the bolt threads and the face of the nut to reduce friction and ensure consistent torque application. Avoid using excessive lubricant, as this can damage the gasket.

After the initial operation, retighten the bolts if necessary. This should only be carried out at room temperature and without pressure in the system. Retightening gaskets after extended exposure to high temperatures should be avoided as this may alter the characteristics and functionality of the gasket material. 

Choose Pure Transfer for Reliable Gaskets

At Pure Transfer, we understand how important gaskets are for the operation fo various industrial applications. 

The significance is not lost on us, which is why we offer high-quality solutions for all of your gasket needs.

Our gaskets are designed to be robust, long-lasting, and effective, ensuring a smooth process. 
From standard gaskets to screen gaskets, there’s something for everyone at Pure Transfer.

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