Sheridan model A/B original style pump cups. These cups were made with Viton 85 A shore hardness rubber for long lasting use.

It will allow you to get the most maximum power possible.

Factory drawings were used to reproduce these cups.

Some homemade cups don't always work as well.

Cups is priced high because of having 2 sets of molds made, it was not cheap!!!  Only a few limited cups were made. 

My thoughts is that 90% of the time the reason why these rifles fail to shoot is because of an old harden pump cup.

Stop wasting your time trying to get 75 year old pump cups to work. Viton was not invented yet when these guns were made. It was invented in the year of my birth.

  I do combine shipping if multiple items are bought.