Quadrajet accelerator pump seals.  Latest design fluoroelastomer seals designed to be used with all modern fuel blends with ethanol.  These seals are made from a special purpose fluorocarbon-based synthetic rubber. It has wide chemical resistance and superior performance, especially in high temperature applications in contact with gasoline.

Sold as a pack of 10.

These will also fit other accelerator pumps that use the same diameter pump cup as the Quadrajet carburetor, including Rochester 2 Jet and 4 Jet models.