Order Replacement Gaskets for Aluminum Sliding Windows

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To order replacement gaskets for an aluminum sliding window, identify the profile type and the exact groove size, then measure the length you need. Send photos and measurements to Techno Kol Uzi, and we will confirm the correct gasket before producing it.

Why Sliding Window Gaskets Wear Out

Gaskets are the rubber or foam strips that seal the sash against the frame. Over the years, sun, heat, dust and repeated opening cause them to harden, crack or flatten. When that happens, you may notice drafts, water entering along the sill, or rattling when the window moves.

Replacing only the damaged section rarely solves the problem for long. Usually the whole run of gasket in that groove has aged at the same rate, so renewing it as a complete length gives a more even seal.

Identify Your Window Profile First

Aluminum sliding windows come in different profiles, and gaskets are made for a specific groove shape and depth. Before ordering, look at the frame and note the groove where the old gasket sits.

Check whether the gasket sits in the frame, the sash, or both.
Note whether it is a bulb, fin, brush or wedge shape.
Take a close photo of the cross section of the old strip.

If you are unsure, bring a removed piece to the factory or send a clear close-up photo.

Measure the Gasket Length Accurately

Measure the groove length, not the window size. Remove the old gasket carefully and lay it flat to measure its length. If it is broken into pieces, measure each groove section and add them together.

Allow for a small margin at the corners, because gasket ends are often cut at an angle. Writing down each window and its groove lengths separately makes the order easier to check.

Send Photos and Details to the Factory

Good information speeds up the process. Send photos of the window from the inside and outside, a close-up of the old gasket profile, and a rough sketch with the measurements marked.

Mention the window's location in the home, whether it is a balcony door or a fixed panel, and any problems you have noticed. This helps the team confirm that the replacement will suit the frame and the sash.

Check the Fit Before Production

Once the details are received, the team reviews the profile and confirms the gasket type. You will be given a written specification to approve before anything is made.

Checking this step carefully prevents the common problem of a gasket that is slightly too thick or too thin, which can make the sash hard to slide or leave gaps.

Fitting the New Gasket

Clean the groove thoroughly before inserting the new strip. Remove dust, old adhesive and debris so the gasket sits flat.

Start at one corner and press the gasket gently into the groove.
Avoid stretching the strip, which can shorten its life.
Trim the ends neatly at each corner.

Test the sliding action afterward to make sure the window runs smoothly.

Frequently asked questions

Can I replace just one damaged section of gasket?

It is possible, but matching an aged section to a new one can leave visible differences in fit. Replacing the full run in that groove usually gives a more consistent seal.

What information do you need to order a gasket?

Please send photos of the window, a close-up of the old gasket profile, and the length of each groove to be replaced. A short description of the window's position in the home is also helpful.

How do I know which gasket shape I need?

Compare the old strip with the groove it fits into and note whether it is a bulb, fin, brush or wedge shape. If you are unsure, send a clear photo and the team will help identify it.

Do I need to remove the window to replace the gasket?

In many cases the gasket can be replaced with the sash in place, but this depends on the window design. If the sash is difficult to access, the team can advise on the best approach.

Common mistakes to avoid

A common error is measuring only the window size instead of each groove length, which leads to a gasket that is too short or too long. Another is ignoring the profile shape, so the new strip does not seat properly.

Our recommendation

Keep the old gasket as a sample and photograph it from the side before removing it, since this makes matching far more accurate. Send the sample with your order whenever possible.

Summary

Ordering a replacement gasket for an aluminum sliding window is straightforward when you identify the profile, measure each groove, and send clear photos. Accurate details lead to a snug seal and smoother sliding.

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