Congratulations on your purchase!
The first Model B-8s were for polishing and scrubbing only; which is likely the version you have. Around 1965 the shampoo component was added. Some of the early ones were retrofitted with the nubs on the handle (which helped to secure the shampoo dispenser tank) and a hole drilled in the base for the dispensing tube; however, these would be less effective at deeper cleaning than those made for shampooing due to the extra weight added to their bases.
The no. 1 steel wool pads were available at local hardware stores as stated in the manual. I'm thinking they either didn't work all that well and/or most customers didn't purchase them; or Electrolux would have continued making the adapter brushes available as an option. If you do use them for refinishing your floors give us your rating of their performance.
The wax mist sprayers sometimes appear on eBay. In fact, there have recently been rug washer listings that included them, which may still be available. The rug washer is a smaller verion of the B-8 and works well on rugs and cleaning smaller areas. The one that would have been manufactured during the same time as your B-8 is an ivory color with a teal base.
As for belts, they are rare. Try contacting your local or area Aerus store (use the store locater on the Aerus website if necessary:
http://www.aerusvacuums.com).
Fyi ... here are the different color versions of the B-8: 1963-66, aquamarine green (or aqua); 1966-68, tan; 1968-75, teal; 1975-79, metallic gold; 1979-82, brown; 1982-83: dark gray; the redesigned version with a square-cornered plastic hood and base has been manufactured in different models since that time.
Here are some user tips:
1) If you do happen to have a shampoo dispenser tank you can also fill it with a detergent solution for scrubbing.
2) Use a wet/dry vac to retrieve the dirty water followed by a rinse for best results; otherwise, rinse twice beginning with clean water both times.
3) Remove the brushes and pads and rinse them in warm water soon after you have finished scrubbing and allow to dry completely before storing them--do not store the machine with them attached, or the bristles will become deformed.
4) Wipe off the outside of the unit and apply something like appliance wax after each use (I use Jubilee Kitchen Wax available at Ace Hardware).
I hope you're successful in completing your B-8 attachment set.
P. S. If your machine came with a dark set of brushes they are for shampooing, because of their softer bristles.
