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Repair and Maintenance of Industrial Flanges

At the most basic level, flanges are helpful to add connecting joints, structures, or mechanical parts within an assembly. However, if we talk about pipe fittings, flanges are needed to support, connect, close, and cover systems ranging from basic plumbing to industrial networks.

There are a few useful introductions about the flange cover, high-temperature flange sealing, and flange packing system.

Flange joint (Flange cover)

The use of flange covers is mainly for anticorrosion and flange connection in all industries. The flange head of the product is to produce the flange surface (ring joint or raised surface). It is gaskets and double-ends studs free from corrosion, and the product is suitable for 316 non-metallic (plastic) and stainless steel. Its manufacturing dimensions are ½-144 inch ANSI, AWWA, and API flange connection diameter. A flange sealing system combined with the flange packing is useful in a harsh environment for protection.

Structure of flange sealing cover:

. 316 SS worm gear fixture;
. 316 stainless steel castings;
. 316 stainless steel belt or non-metallic belt;
. ECH rubber pad (temperature: from – 34.4°C to 149°C) safety relief valve can    release 5 psi;
. The chlorinated rubber layer of the sealing groove (temperature: –           34.4°C to 82°C).

The high-quality flange sealing cover is that it is easy to connect, detect and install. In addition, the durability and stability of the UV non-metallic materials make them a good option for reuse.

Packing systems of industrial flanges

It is suitable for the temperature of 80°C. Flange packing is unique and solves corrosion for a long time.

Flange packing is a type of composite polymer polarity based on coating. Paste form makes it reusable without pretreatment. In addition, the viscoelastic formulation allows the materials to lower into the gap and space, resulting in the excellent seal used against corrosion.

Because of its easy use and money and time-saving capacity, the packing system provides long-term protection.

When we talk about the properties of flange packing, keep this in mind that it can be an excellent bonding to steel and iron, FB (melting epoxy powder) polyurethane. Polyethylene high resistance is the temperature and weathering of anti-salt ranging from 51°C to 80°C filling the voids.

The flange surface can be reused/removed without preprocessing using a gas or manual gun with a flexible gun that you can inject gently. It can also ensure that the ring slot is filled with the CZ winding tape before sealing it.

Different packing systems for flanges

Below are a few different systems that are used for packing the flanges:

. E-2400/E2000 is useful to protect the steel flange, structure, pipe, and bold from corrosion by a non-electrolytic method.. E-2400/E2000 is a high-temperature antiseptic flange packing that helps protect the flange connection from corrosion at the temperature of 149°C.
. E-2400/E2000 high-temperature flange packing suits the 149°C well.
. ASTM-B1117 salt spray test was used on the nut bolt assembly for 2000 hours of testing. The area protected by the E2000/2400 may rotate with the hand. Proper use of E2000/2400 may help protect the flange connection from corrosion.

Sealing of high-temperature flanges

High-temperature flange parts usually need to be flat and high-temperature sealed. If there is no additional sealing with good sealant in the separate pressure region, flange part, or if it is affected by the pressure, it may lead to manufacturing deformation or inaccuracy. It is to say that, in separate pressure areas, the leakage phenomenon under pressure needs to plan repaired. High temperature and high-quality sealing may make it in the standard applications of the gas engine, steam engine, or high-temperature flange. It helps keep the inert so that it is easy to bear the heat with lubricant, light fuel oil, water, steam, or air.


The high temperature in flanges is suitable for the condition as it has high requirements for the temperature and pressure of flat and smooth flat sealing surfaces. Sealing products will not cure, and their consistency may change to maintain elasticity and flexibility, so there are no time requirements. It may be immediately put into operation after the construction. If the users need to repair the damage to the high-temperature sealing surface, it must coordinate with the repair products.

Visit Texas Flange today for more information on the repair and maintenance of industrial flanges!

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