A sealing gasket for use in electrical connector comprises a planar base and a plurality of bosses extending in a direction away from the planar base. The plurality of bosses each include a first opening portion extending from the base in a direction towards an opposed end of the bosses, and a second opening portion extending from the opposed end of the bosses in a direction towards the base. An intermediate membrane is formed between the first and second opening portions. An electrical connector is also disclosed.