Altec 288 Gaskets | eBay

This dealer from South Korea is selling 288 gaskets. I don't see these in any of the Altec spec sheets. Altec lists the 2 thicknesses of rubber throat gaskets but no "face gaskets" (for lack of a better term) such as used with small format drivers. Are these a solution in search of a problem or is this something that might be useful?

http://www.greatplainsaudio.com/vint...nstruction.pdf