Lincoln Service Parts 2 › Lincoln Electric 9SS8042 COUPLING DISC BACKING PLATE S8042 Lincoln Electric 9SS8042 COUPLING DISC BACKING PLATE S8042 Sale Price: $40.70 Original Price: $46.80 COUPLING DISC BACKING PLATE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! COUPLING DISC BACKING PLATE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1