– Type: Pivot‑head rotary shaft seal for NOV VARCO top‑drive
– Nominal rod diameter: 11.500 inch
– Material: PTFE sealing ring + NBR elastomer energizer
– Max working pressure: 21 MPa
– Max rotary speed: 150 rpm
– Medium: Anti‑wear hydraulic oil, drilling mud splash
– Application: NOV VARCO TDS‑8SA / TDS‑10SH / TDS‑11SA top‑drive system
– Operating temperature:‑40℃ ~ +120℃
