Just a caution here KN95 and N95 masks will NOT protect you from asbestos fibers. Generally a respirator with an approved filter removing 99.97% of all particles 0.3 microns or larger and is well fitted to your face is required. Contaminating, your clothes, immediate and adjacent space(s) are really really important to protect yourself and others. Use appropriate caution testing first is generally the best way to know for sure.
It has a long history in the US starting in 1977 with a date of 1989 with which many consider a near prohibition for new use. In the UK, very likely sooner so I would Google for sure if you are curious of international participation. I would not assume though that the presence of a ban means it is not asbestos or asbestos containing. One thing I do know is we always presume it is and test to rule it out. The only test I am aware of that is accurate would be a bulk sample to an accredited lab where the sample is analyzed appropriately.
Current (international) asbestos ban article http://ibasecretariat.org/alpha_ban_list.php
