Conax Technologies HEGPK Glands are specially manufactured and designed to electrically and/or thermally separate single electrodes, tubes or temperature sensors for use in vacuum furnaces, liquid level probes, transformers, environmental chambers, power leads and more. This technology also makes sure that there is a seal against gases and liquids and resist electrode (also known as conductor) movement under pressure. The difference between HEGPK Gland and EGT Gland is that the insulator/sealant is manufactured from PEEK. PEEK is widely known as one of the highest performing engineered thermoplastic materials currently available. This is what makes HEGPK Glands one of a kind.