TENSIONING DEVICE FOR A SAFETY BELT COMPONENT

A tensioning device for a safety belt component, comprising a gas generator for generating a pressurized gas, a piston which can be driven by the pressurized gas, a traction cable which is connected to the piston and can be connected to a safety belt component to be set in a tensioning movement, a tensioner tube for receiving and guiding the piston, a gas generator housing accommodating the gas generator, wherein the gas generator housing is arranged in the tensioner tube, and a seal, wherein the seal seals the gas generator housing against an inner side of the tensioner tube on a side facing the piston, wherein the seal has a first sealing lip which extends along the longitudinal extension direction of the tensioner tube.