Index revision : C - November 2017 52 70308.7. Turbine, injector and restrictor sealsPart number Restrictor Number of grooves Colour640400 D: 0.8 mm - Black640401 D: 0.9 mm 1 Black640402 D: 1.0 mm 2 Black640403 D: 1.2 mm - White640456 D: 1.5 mm 1 White640464 D: 3.0 mm 2 WhitePart number Injector Number of grooves738632 D: 0.9 mm -738353 D: 1.2 mm 2738634 D: 1.5 mm 3738635 D: 1.8 mm 4Item Part number Description Qty1 J3STKL005 Chemically-inert O-ring 12 J3STKL014 Chemically-inert O-ring 13 J3STKL002 Chemically-inert O-ring 24 J3STKL027 Chemically-inert O-ring 2DES033731234RestrictorInjector