farquhar or anyone else...

I'm about to replace the same type of spider gasket on my Hayward SP-711 valve. The old one is pretty much in place (won't move) and because it's worned out it caused a good leak last night (after changing about 25% of water in my 16K IG pool). I'm planning on following haywardnet.com advice on using crazy glue. Is this the best way to install the new gasket?

Any help is greatly appreciated...