On Tue, 30 Jun 2020 04:25:16 -0500, Alan wrote:

On Tue, 30 Jun 2020 09:06:46 +0000, Smolley wrote:

I have about 60 off 155mm x 2mm cutting discs of the German 'Pferd'
Horse Elastic Brand and they have been in the shed since 1990. They
look quite sound and sound like crockery when pinged, but no ring. The
resin is still very hard. Any thoughts on them being unsafe.....anyone
?

Whats the use by date on them?
Dont use them if they are beyond their date, they do deteriorate, and
make a real mes when they disintegrate.

No obvious 'use by date' on box or discs:

80 EH 115-2 A 46 SG
DSA Nr. 375
SUVA Nr. 282
KDM Nr. 37
80m/sec
Max 13300 RPM