This brush fits the TD2100 series Marsh gummed tape dispenser (both manual TDH and electric TDE) manufactured by MSSC, LLC.
To make your brushes last, clean the moistening brush weekly or monthly with Dawn dish washing detergent (or any soap that does not contain moisturizer) and rinse well. Also, make sure the tank is cleaned. The high point of the brush should point towards the front of the tank. Refill the water bottle with clean cold tap water.
If your brushes have a lot of build up from hard water, remove the water tank from the machine, flip the brushes, and allow them to soak overnight in the water tank. This will make help remove the buildup without further damaging the brushes.
The RP40407 will not fit models manufactured before 2005 with the RP1712 brush.