Bob Henson explained on 22/03/2014 :
Harry Bloomfield wrote:

After years of use, the 4 lamps in the oven needed replacement. Ibought
some from a local shop which were marked 230v and they lasted just
weeks, got another set from ebay listed as 220 - 240v which each lasted
only a week. all were marked as oven lamps, but I wasn't conviced about
that, due to the glass being very clear, rather than toughened. Very
annoying, because they are not that easy to change.

Latest set have lasted a month and were 2 for a pound from Poundland,
marked 240v on the package and on the lamp base, the glass was also
discoulored suggesting they were toughened. Better yet, they have
lasted a month so far ;-)

Try explaining to numpty sales people that 220v is very different from
the 240v in the UK :'(

You did get ones that were specifically marked as oven lamps for 300°C use?

Yes I did!

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk