OIL SEAL RING. THESE RING HAVE A FAIRLY SIMPLE STRUCTURE, A FLEXIBLE R UBBER RING AND A METAL REINFORCEMENT ASSEMBLEY. WHICH ARE CHARACTERISE D BY THE ABSENCE OF MOVEABLE PARTS. THEY ARE USED ON A LARGE NUMBER OF MACHINES OR APPARATUS TO PREVENT LEAKS OF OIL OR GAS OR TO PREVENT DU ST FROM ENTERING, BY SEALING THE SURFACE TO BE JOINED.

GIR 1 TERMS OF HEADING 84.85 COVERS MACINERY PARTS, NOT CONTAINING ELE CTRICAL CONNECTIONS, INSULATORS, COILS, CONTACTS OR OTHER ELECTRICAL F EATURES, NOT SPECIFIED OR INCLUDED ELSEWHERE IN THIS CHAPTER. GIR6. TE RMS OF ONE-DASH SUBHEADING 8485.90 OTHER, CN. CODE 848590.80 OTHER, TA RIC CODE 84859080.90, OTHER.