Specially developed for the specific applications of mechanical seals, the Diamond Faces crystalline diamond layers promise excellent chemical and thermal stability as well as unmatched hardness. The material is stable up to approximately 1,500°C in inert atmospheres, where it begins to burn at approximately 600°C and in an oxidizing environment. It is resistant to the degrading effects of acids and lyes. — Burgmann Industries, GmbH & Co. KG, Wolfratshausen, Germany
… or this Diamond Seal
| By Chemical Engineering