New Old Stock Silca Pump Head leather seal/plunger You get 3 of these, singles available in the store These are what keeps your frame pump pushing air THESE DO NOT FIT FLOOR PUMPS, FRAME PUMPS ONLY!! very easy to take your pump apart, grease the leather seal, and swap it out with whatever is inside These are genuine Silca frame pump parts - not dried out These are about 21mm wide and will flare out when lubed and in use in case you are looking for another non silca pump Visit My eBay Store: for thousands of new old stock, vintage and modern bicycle parts. We're the online bike parts dealer for rare components and spare parts for your restoration and repair. Here you will find original pieces of cycling history that cannot be found anywhere else. Please use at your own risk . We decline liability for any damages resulting from use of these items, most of which are decades old. Vintage NOS Bicycle parts is an environmentally friendly business. We use recycled packaging & materials the large majority of the time and nothing in our store has been manufactured for us or is being made currently for sale. International Customers you are responsible for paying your countries customs duties. We will not declare a lower value on customs documents.