wound and essentially strand shaped first storage region 322 with an adjacent application section 334 u2014 a spiral wound layer 360 composed of a panel shaped lubricant impermeable material e g plastic is located between the individual spiral turns of first storage region 322 in order to prevent a u201c short circuit u201d between the turns due to intermediate layer 360 the individual spiral turns of first storage region 322 have clearance between each other and they are insulated from each other in terms of transport of lubricant transversely to the circumferential direction of the spiral turns with regard for the remaining aspects the embodiment shown in fig9 corresponds to the embodiment depicted in fig8 further aspects will therefore not be described and instead reference is made to the description of the embodiment shown in fig8 and the embodiments depicted in the previous figures it should be pointed out that components in fig9 that are identical to components described with reference to the previous embodiments are provided with the same reference numerals plus 300 as compared with the embodiment depicted in fig4 and 5 it should be pointed out that in the embodiments with a spiral wound first storage region a short circuit between turns can also be prevented by inserting the strand shaped first storage region in a tube composed of plastic.