Foam seal round the window or door squashed flat or torn? Q-Lon seals have a soft foam core inside a tough outer skin. They are used on many uPVC, composite and timber windows and doors.
We stock Q-Lon 4465 and 6571 weather seals for uPVC windows and doors, sold per metre. For timber windows and doors, including Aquamac 63 (QL3005) packs, see our Aquamac seals.
Pull out a short length of the old gasket and look at the end. The shape of the cross-section is what you need to match.
Measure the overall height and width, and the leg or foot that pushes into the groove.
Compare your piece with the product diagrams, and look for a profile number such as 4465 or 6571.
Measure round each window or door and add a little for the corners and trimming. Most gaskets are sold per metre.
Q-Lon is foam with an outer skin, so it feels soft and spongy. Rubber bubble and flipper gaskets feel solid. Check which you have before you order.
On timber frames, Q-Lon seals usually push into a groove cut in the wood. Aquamac is a Schlegel Q-Lon range made for timber.
Aquamac is a Schlegel range of Q-Lon seals for timber windows and doors.
Pull out the old seal, clean the groove and push the new one in without stretching it.
Browse all gaskets and seals: bubble, flipper, E gasket, wedge, Q-Lon, Aquamac, U-channel, threshold seals and draught excluders.
Not sure which gasket you have? Send us a photo of the end of a short piece of your old gasket, with a ruler in shot, and we'll find the closest match.
Send us a photo to identify your partMonday to Friday, 8:30–12:30 and 13:00–15:30
