aurelievik184 years ago000What is the purpose of "sponge rubber"?Show in original language (French)MHAG19472 years ago000Hello, the seal prevents the ingress of moisture and dirt. For more details on the product, see the manufacturer's website at https://katalog.maxhauri.ch/de.... Best regards from the MAX HAURI team. Show in original language (German)CommentHessair4 years ago000From what I understand, it is for IP44 insulation (To be placed between the male schuko plug and the adapter)Show in original language (French)Comment1 comment