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3mm Wedge Compression Back Gasket Double Glazing Rubber Seals

Price £1.25 (Inc. VAT)
£1.04 (Ex. VAT)
(12 reviews) Write a Review
Part Number:
GASK-WEDGE-3mm (W403) (5055621408020)
In Stock
Delivery Cost:
Calculated at Checkout
3mm Wedge Back Gasket seal for UPVC windows

3mm Wedge compression back gasket

  • This gasket is only available in black.    

Wedge gasket is fitted between the double glazed unit and the upvc frame to hold the glass securely in place. Over time these gaskets can shrink or perish and create gaps which lets in draughts and cold spots. It is important to get the right size of gasket as too thick will put too much pressure on the glass (if you can even get it in) and too thin will not hold the glass tightly. It is more often found on externally beaded windows as it works together with the bead to push the glass into place and create a secure fit.

When fitting wedge gasket you can push into place using your fingers or if you are doing quite a large area you may find a gasket roller better to use. Gasket rollers are available on our site by clicking here


 As gasket is custom cut to the individual requirements we cannot accept returns.  If you are unsure which gasket you need then please use our gasket sample pack: 

Click here for sample pack



Frequently Asked Questions

You should order per meter and we will cut to length for you. As it is cut to length we cannot accept returns. If you are not sure which gasket you need then maybe try the sample pack first.

Gasket can deteriorate and shrink over time so unfortunately we can’t identify your gasket this way. We recommend purchasing our gasket sample pack to see which gasket fits in your frame the best.

It is possible that a different gasket may work in your groove. Therefore, we have the sample pack, so you can try them and see what fits.

Generally by pushing bit by bit with your thumbs. With some of the chunkier gaskets such as wedge gaskets it can be done a bit easier with a gasket roller.

12 Reviews Hide Reviews Show Reviews

  • 5
    Delivery great, perfect fit. Thank you

    Posted by Louie Mears on Apr 09, 2018

    Delivery great, perfect fit. Thank you

  • 5
    3mm wedge compression back gasket

    Posted by Mick on Jan 11, 2018

    Excellent product, will be back for more

  • 5
    3mm Wedge Gasket

    Posted by Nigel Chambers on Nov 22, 2017

    Replaced a faulty gasket in a draughty window
    with this product, which served the purpose well The tenants are now draught free & happy !!

  • 5
    Double glazing seals

    Posted by Mrs Valentine on Apr 17, 2017

    It is such a great idea to send samples of seals so that you find the correct one. This company is brilliant, speedy delivery and good product. Highly recommend them.

  • 5
    very happy that i found Handles&Hinges

    Posted by Antony Lowe on Dec 21, 2015

    Perfect replacement seal / good quality

  • 5
    wedge Gasket

    Posted by John Birch (ormskirk Windows & Joinery) on Jun 22, 2015

    Great product

  • 5
    Job Done

    Posted by Unknown on Mar 02, 2015

    Arrived by post very quickly and was easy to fit.Job done in less than 5 minutes.

  • 5
    Does the job

    Posted by JJ Northampton on Apr 22, 2014

    Excellent service, real people on the end-of-the-phone with superb technical advise and after sales support. Well done guys, highly recommended.

  • 5
    information online/ pictures/ descriptions excellent.

    Posted by Kate on Dec 12, 2013

    The customer service team were very helpful when I had a query. The order arrived very quickly and was easy to fit. No one locally stocked the gasket so decided to buy online, the dimensions / pictures were extremely helpful. Thank you.