3mm Wedge Compression Back Gasket Double Glazing Rubber Seals

Price £1.25 (Inc. VAT)
£1.04 (Ex. VAT)
(11 reviews) Write a Review
GASK-WEDGE-3mm (W403) (5055621408020)
In Stock
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



11 Reviews Hide Reviews Show Reviews

  • 5
    3mm wedge compression back gasket

    Posted by Mick on 11th Jan 2018

    Excellent product, will be back for more

  • 5
    3mm Wedge Gasket

    Posted by Nigel Chambers on 22nd Nov 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 17th Apr 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 21st Dec 2015

    Perfect replacement seal / good quality

  • 5
    wedge Gasket

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

    Great product

  • 5
    Job Done

    Posted by Unknown on 2nd Mar 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 22nd Apr 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 12th Dec 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.

  • 5
    Very good product

    Posted by Les Orrin on 29th Jan 2013

    Ordered on morning arrived next day. I would have spent days looking for this product locally and it was so easy and so much quicker to get it on line. It is easy to fit and does the job perfectly