Mechanical seal device

Abstract

A mechanical seal device for sealing a first seal sliding element and a second seal sliding element by bringing them into abutment, wherein the first seal sliding element is a seal sliding element having silicon carbide as a substrate and contains carbon and the second seal sliding element is a seal sliding element containing silicon carbide as its main ingredient and having 5 to 200 μm size pores independently dispersed in it, and thereby excellent in durability and dry running wear resistance, preventing seizing or wear of the seal sliding element, and effectively suppressing occurrence of squeaking at the time of sliding.

Dependencies are inferred from the claim text.