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Popular Container Door Seals & How to Repair Them

Popular Container Door Seal

There are different types of shipping container door seals with other functionalities. In this case, Hengcheng is a leading company that manufactures various seal strip sizes and shapes. All these seal strips are ideal for automobiles, doors, windows, shipping containers, trains, and ships. In the following, we have brought the most popular type of seal strips for a shipping container.

J-type Container Door Seal

This shape of container door seal is the most common in every cargo container. This shipping container door seal’s cross-section resembles the English letter “J.” This rubber seal can withstand high loads of up to 10 MPa. Besides, it can also withstand incredibly high and low temperatures ranging from -40 °F to 248 °F (-40 °C to 120°C).

EPDM Weather Strip for Container Edge

This type of EPDM seal strip is explicitly designed for the edges of cargo containers. It is round with a hole at the lower part of the seal strips. The high-quality EPDM material is waterproof and can also withstand mild acids. Due to its excellent compressibility, the EPDM weather strip ensures better long-lasting.

Rubber Extrusion Strip for Container Door

This shipping container door seal has a U shape at the upper section and a flat surface at the bottom. Similar to the above seal strips, this type of rubber seal is also made of EPDM rubber. This type of seal strip is ideal for installation at the container doors.

H Shape Rubber Seal Strip for Container Door

This seal shape usually comes as H shape rubber seals, which can withstand high loads and temperatures. Like the other shipping container door seal discussed above, this seal strip is also made of high-quality EPDM rubber. Therefore, it can work against mild acids, too. This type of seal strip is ideal for sealing shipping container doors.

How to Repair Shipping Container Door Seals?

Over time, seal strips erode and lose efficiency. As a result, it requires maintenance for repair or replacement. Replacing the shipping container seals is easy, and you can do it as a DIY project. However, we have divided the replacement steps into two primary stages.

1. Remove the Existing Seal Strips

First, observe the damaged seal and then mark clearly on the seal strips where you need to repair it. Then, using a sharp blade, cut the portion of the damaged seal. In this situation, you may need a saw machine to remove other parts from the marked area. Now, properly clean the adhesives and other contaminants. You must keep the adhesive place free from pollutants since it might not function effectively if the glue combines with them.

2. Apply New Seal Strips

At this stage, first, you pick a new shipping container door seal and place it on the projected area. Now, try to estimate and cut the size using a sharp blade. It is important to note that you can keep a little extra but can not keep it short. Otherwise, the sealing will not work effectively if the length of the rubber seal is short. The next step is to have a drill ready to produce holes, then tap the bolts back into place using a hammer. Finally, add adhesive and finish installing the seal strips.

Final Thought

Shipping container door seals are a vital element of every cargo container. These seal strips act as weather stripping and prevent liquids or gas from coming outside. These seal strips can withstand extremely high and low temperatures. As a result, the products inside a container remain safe from external contaminants and natural obstacles.

Hengcheng keeps high quality and the latest machinery to manufacture the best quality seal strips. Contact us for any queries. Our experts are always ready to answer your questions. You can also visit the product catalog to learn more about the products.

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