Lincoln Service Parts 1 › Lincoln Electric 9SM29979 VAULT BACK GASKET M29979 Lincoln Electric 9SM29979 VAULT BACK GASKET M29979 Sale Price: $83.39 Original Price: $95.90 VAULT BACK GASKET PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! VAULT BACK GASKET PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1