Are Closed End Rivet Nuts Waterproof?

It’s Yes, but need a waterproof rubber ring.

Closed end rivet nuts is a kind of riveting nuts that used in all kinds of metal sheets, pipes and other fastening fields in the manufacturing industries. They are widely used in assembly of automobile, aviation, railways, refrigeration, elevator and other mechanical and electrical products as well as light industry products.

Closed end rivet nuts are developed in order to solve the shortcomings of easily melting of metal sheets and thin pipes when welding nuts, as well the slipping of screws. Therefore, they don't need to weld nuts and without internal threads, but with the advantages of high riveting efficiency and convenient use.