Windscreen Sealant

The place to raise issues, ask questions, swap ideas and discuss anything related to aircraft engineering, maintenance and building.
NB Any opinions expressed in this forum are not necessarily those of LAA Engineering

Moderators: John Dean, Moderator

Windscreen Sealant

Postby coxargus » Sun Nov 05, 2017 5:37 pm

I am interested in what folk are using for windscreen sealing.

I was going for PR1425 at £38 for a 100ml semkit. Apparently this is no longer kosher and the 'Green' alternative is £134 +VAT!!! for the same 100ml. :(

I want to avoid silicone as it is a brute to clean off if you need to paint/touch-up at a later date.

All ideas or sources for PR1425-B2 eagerly awaited even if the batch is out of date.

Many thanks

Frank Cox
Frank Cox
Posts: 25
Joined: Fri Sep 11, 2015 2:57 pm

Re: Windscreen Sealant

Postby tnowak » Mon Nov 06, 2017 9:02 am

Have you looked to purchase in USA? ... 10488.html

Tony Nowak
Posts: 377
Joined: Wed Jan 02, 2008 12:00 pm

Re: Windscreen Sealant

Postby Chris Martyr » Mon Nov 06, 2017 2:20 pm

Hey Frank ,
I may be able to help you here , but will PM you with details.
Incidentally mate , what is it for ? The only reason I ask is because we use that stuff for sealing B747 cockpit side windows . I don't somehow envisage that you'll be bowling along in a homebuild doing 550mph , but if that's what your project specifies , then so be it.
As a matter of interest , I restored an old Willys Jeep a couple of years back and needed to replace a smashed windscreen half . I sealed it with a fillet of black RTV which was squeezed into the channel of the windscreen frame . Was and still is perfect.
OK , I know that I've quoted ridiculous extremes here , what with one good for 550mph and my Jeeps top speed about 1/10 of that , but RTV is very user friendly stuff and easy to work with and PR1425 is bloody 'orrible stuff.
PM on way,,, :D
Rgds Chris
User avatar
Chris Martyr
Posts: 487
Joined: Wed Dec 15, 2010 11:58 am
Location: Horsted Keynes Sussex

Re: Windscreen Sealant

Postby coxargus » Mon Nov 06, 2017 6:38 pm

Thanks Tony for the link -
However this is classified as 'Dangerous goods' - I don't know why - so, expensive to ship.
Frank Cox
Posts: 25
Joined: Fri Sep 11, 2015 2:57 pm

Re: Windscreen Sealant

Postby mike newall » Mon Nov 06, 2017 7:50 pm

Sealing what on what and how ?

If it is perspex to just about anything, then Sikaflex 295UV is probably the best. It is what is used on RV's and adheres well to metal, plastic or wood.
mike newall
Posts: 271
Joined: Mon Jan 28, 2008 3:56 pm
Location: N Yorkshire

Return to Aircraft Construction & Maintenance

Who is online

Users browsing this forum: Bing [Bot] and 7 guests