Will a eyecup made for Canon AE1 fit on a Pentax ZX-L?

Tldr, the eyecup that came on my Pentax ZX-L broke last week (no idea how), so I'm in need of a new one. I've read on various sites that a eyecup made flr the Canon AE-1 will fit on most other cameras viewfinders, but am unsure if itll fit on my Pentax since finding info on the sizes of various camera's viewfinder is a pain. The viewfinder size on my ZX-L is ~18mmx22mm

If your Pentax ZX-L is the same as my MX, the Canon eye cup “fits” but not very well. It’s hard to put it on, then too loose, and comes off easily. You won’t like it and you will loose it.

If anyone knows of a better replacement I would like to know about it.