A felt drip pad liner is used to collect the excess oil from your Singer 301 Sewing Machine.
If there is oil residue on your finger after depressing it into the old pad, then it is time for a new Felt Drip Pad!
Simply remove the old one after removing the metal tray on the bottom of your machine and place it on the tray.. In the olden days, rubber cement was used to adhere and keep the felt setting on the tray. (You may need to clean the excess oil and old pad adhesives from the tray before applying the new pad.)
301 Model Felt Drip Pad is not peel-and-stick.