Gtms connector for oil and gas market

A feed-through element for harsh environments, comprising:

• a support body with an access opening;
• at least one functional element is arranged in the access opening;
• and
• an electrically insulating fixing material securing the at least one functional element in the access opening and electrically insulating the at least one functional element from the support body,
• wherein the electrically insulating fixing material contains a glass or a glass ceramics with a volume resistivity of greater than 1.0×1010 Ωcm at the temperature of 350° C. and said glass or glass ceramics comprises in mole % on oxide basis:
• SiO2
• 25-55,
• B2O3
• 0.1-15,
• Al2O3
• 0-15,
• MO
• 20-50, and
• M2O
• 0-<2,
• wherein MO is selected from the group consisting of MgO, CaO, SrO, BaO, and any combinations thereof, and
• wherein M2O is selected from the group consisting of Li2O, Na2O, K2O, and any combinations thereof.