A SLEEVE FOR USE IN THE OIL AND GAS INDUSTRY, COMPRISES OF SWELLABLE RUBBER THAT IS SECURED ONTO A BASE PIPE BY MEANS OF METAL END RINGS AND GRUB SCREWS. USED TO ISOLATE ZONES IN A WELL, BY SELECTING RUBBER COMPOUNDS THAT WILL EXPAND IN THE PRESENCE OF CERTAIN WELLBORE FLUIDS. THE RUBBER COMPOUND AND OD ARE DESIGNED SO THAT AFTER A PREDETERMINED TIME, THE RUBBER WILL HAVE EXPANDED SO MUCH THAT IT MAKES CONTACT WITH THE INSIDE DIAMETER OF THE HOLE AND SEPARATES THE FLUIDS FROM ABOVE AND BELOW THE RUBBER ELEMENT.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 4016: OTHER ARTICLES OF VULCANISED RUBBER OTHER THAN HARD RUBBER. GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 401699: OTHER THAN ELSEWHERE SPECIFIED WITHIN THIS SUB-HEADING. CN CODE 40169991 RUBBER-TO-METAL BONDED PARTS. TARIC CODE 4016999190: OTHER THAN FOR TECHNICAL USES, FOR USE IN CIVIL AIRCRAFT. ALSO CLASSIFIED IN ACCORDANCE WITH: CHAPTER 40 NOTE 1 REFERS. HSENS TO HEADING 4016 REFER.