Lincoln Service Parts 2 › Lincoln Electric 9SS19515-5M BACK CAP O RING [5] S19515-5M Lincoln Electric 9SS19515-5M BACK CAP O RING [5] S19515-5M Sale Price: $7.26 Original Price: $8.35 BACK CAP O RING [5] PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 5 Add To Cart Added! BACK CAP O RING [5] PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 5