How to Choose the Correct Seal


O-rings, gaskets, and seals are all important pieces of a machine, vehicle, or equipment, but if a seal is faulty or the wrong size is selected, the seal will fail and there will be issues. While it is easy to place blame on the seal manufacturer, often the issue lies in selecting the wrong seal for the job. It’s always a good idea to check the old seal that you will be removing and make sure that the new one is the same before you complete installation.

Replacing Seals

When you are going to replace an old seal, either because it has cracked due to age or use or is simply faulty, check on it before discarding it to find out the number. This will allow you to find the same or similar seal to use. If there is no seal available that is the same width as the one you are replacing, then it is a good idea to select one with a narrower width. While you may be able to use a wider width in some applications, chances are good that the space will be too tight for you to select a wider seal.

Installing a New Seal

Before you install a new seal in a machine or vehicle, make sure to take measurements of the seal to ensure that it will fit and will perform its job. Some of the measurements that you will need to take include the seal outside and bore diameter as well as the shaft diameter and seal width. Make sure to measure the outside diameter in at least three places around the seal so that you get an accurate number. Not all sealing products in Bradford are made the same, and it’s important to work with a company who consistently produces high-quality products.

Other Factors to Consider

There are other things to take into consideration when choosing a new seal for your vehicle or machine. While two seals may appear to be exactly the same, they may not be able to withstand the same conditions, and you will want to pick the one that will work best for your particular application. The pressure, speed, and temperature of where the seal will be placed and what it will have to withstand play an important role in selecting the right seal. If you have the correct size of seal but it is not able to withstand the pressures put on it, then it will fail anyway.

Picking the right seal for the job is imperative, as it will keep your car running smoothly, your assembly line on-task, and your machinery safe to use. If you have never chosen a seal before, following these guidelines will help you make a good decision and keep your machines working properly.


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