Operating conditions: Temperature: -20°C to +120°C; Pressure: ≤0.5 MPa; Speed: ≤10 m/s. Materials: Rotating ring: Carbon/SiC/TC; Stationary ring: 99% Ceramic/SiC/TC; O-ring: VITON, NBR, EPDM; Spring and metal parts: SUS304/SUS316.