According to the manufacturer this product needs to be unwrapped prior to using.
BOB273103 - Theft Resistant Spindle for Classic Series Toilet Tissue Dispensers does come with a BobKey.
The manufacturer will not say that there are other paper toilet seat covers that will work with this toilet seat cover. The dimensions for this dispenser are 17 1/2 wide x 13 1/4 high x 2 1/4 deep. The refills are 15 x 18, and we believe that if you had the same refill size you should be fine. There are so many different refills that we are not 100% if they will work or not, so we would recommend using the Scott's brand toilet seat cover refill. https://www.ontimesupplies.com/kim07410pk-scott-personal-seats-sanitary-toilet-seat-covers-125-pack.html
Every public restroom needs the toilet paper dispensers, toilet seat covers and toilet bowl cleaners featured at On Time Supplies. We stock a wide variety of toilet paper roll dispensers, toilet bowel covers and other janitorial supplies, so your restroom stays clean and odor free. If you need more information on any of the supplies featured at On Time Supplies, including information on bulk order discounts and GSA pricing, call us toll free at 1-866-501-6055. We're happy to answer any supply questions.