Performance: Sealing efficiency, enhance sealing efficiency to ensure your wine barrels remain fresh and carbonated for a longer time. Material: Silicone, made of high-quality silicone, these gaskets provide durable and flexible sealing for your bucket joints. Compatibility: 5/8 "size, designed for comfortable fit, these washers are compatible with 5/8" barrel joints and tap handles. Purpose: Beer brewing, ideal beer brewing. These washing machines prevent leakage and keep carbonic acid in your barrel of beverages. Quantity: 10 gaskets per pack to ensure you have a fresh seal for each faucet.