Sealing ring pack 3 for kenwood bl410 bl430 bl436 bl440 bl446 bl330 bl335 bl336 bl338 bl346 fp510 fp511 fp520 fp523 fp530 fp533 bl540 bl546 kenwood genuine part number kw680939 the use of this spare part requires knowledge on how to repair electrical products therefore this should only be carried out by individuals with relevant experience electricshoppingcom takes no responsibility for damage caused due to incorrect fitting if you have any doubts please contact our sp