As stated on all Cometic invoices returns must be authorized and issued an RGA number. To obtain an authorized RGA number please contact our Returns Department. Only catalog / stock items can be returned (custom gaskets are non-returnable). All returns will incur a 25% restock charge. Returns are not accepted after 30 days from invoice date. RGA stands for Return Goods Authorization. All authorized returns entering the building must include this number on the outside of the package in order for the shipping department to receive and properly process.