SIGMA SEAL. USED IN A SIMILAR WAY AS A GASKET. MADE OF INCONEL STEEL AND SILVER PLATED. FINISHED COMPONENT. USED TO PROVIDE A PHYSICAL SEAL BETWEEN TURBINE HOUSING AND BEARING HOUSINGMATING FACES. IT IS MECHANICAL.

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 8484 - GASKETS AND SIMILAR JOINTS OF METAL SHEETING COMBINED WITH OTHER MATERIAL OR OF TWO OR MORE LAYERS OF METAL; SETS OR ASSORTMENTS OF GASKETS AND SIMILAR JOINTS, DISSIMILAR IN COMPOSITION, PUT UP IN POUCHES, ENVELOPES OR SIMILAR PACKINGS; MECHANICAL SEALS. GIR 3 (b) HAS BEEN USED TO IDENTIFY THE SEAL AS THE ESSENTIAL CHARACTERISTIC. GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 848420 - MECHANICAL SEALS TARIC CODE 84842000000 - MECHANICAL SEAL. ALSO CLASSIFIED IN ACCORDANCE WITH: NOTE (C) TO THE HSEN'S OF HEADING 8484 REFERS.