A polymeric keg connector for fluidly connecting the interior of a container has an opening with a fluid tube. The keg connector has a connector, a coupler, a support movable in a longitudinal direction Z with respect to the base body, a tube, and a penetration actuator. The distance the support is moved is sufficient for the tube penetration end to penetrate into the opening provided on a closure of the container. The sliding surfaces of the connector and the support are manufactured with a particulate-reinforced polymeric material and the polymeric material of the connector is reinforced by a particulate material that can be different from the particulate material reinforcing the support element.