Closed-end rivets feature a tubular rivet design with a mandrel through the center. Unlike an open-end blind rivet, a closed-end rivet provides 100 percent mandrel retention. These rivets are critical in various industries as they're able to block the passage of fluids and gases in order to create a tight and secure seal. At Bay Supply, we offer customers a wide range of BayFast closed-end rivet products in various sizes, materials and lengths. Contact us today for availability and price breakdown.