Lincoln Service Parts 2 › Lincoln Electric 9ST8391 ADAPTER INSULATION T8391 Lincoln Electric 9ST8391 ADAPTER INSULATION T8391 Sale Price: $22.10 Original Price: $25.42 ADAPTER INSULATION PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! ADAPTER INSULATION PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1