Dry running seals
DR1, DR2

Dry running seals<br/>DR1, DR2

Dry running seals
DR1, DR2

Features

  • Rotating multi-spring pusher seal
  • Balanced
  • Uniform seal face loading
  • Special carbon material with dry running capability
  • Single-outside mounted arrangement (DR1)
  • Single and back-to-back arrangement (DR2)

Advantages

  • No product contamination, as seal is not in direct contact with process liquid
  • Very cost effective since no lubricating or cooling system is required
  • Ease of installation and maintenance

Operating range

Shaft diameter: d = 25 … 115 mm (1" ... 4.527")
Pressure: p = ... 13.7 bar (... 199 PSI)
Temperature:
t = -75 °C ... +120 °C (-103 °F ... +248 °F)
Sliding velocity: vg = 1 m/s (3.3 ft/s)

(Consult EB for applications outside above limits).

Materials

Seal ring: Carbon graphite resin impregnated,
Carbon graphite antimony impregnated
Mating ring: Silicon carbide
Secondary seals: FKM, FFKM, EPR
Springs: Hastelloy® C-4
Metal parts: SS 316, other materials on request.

Recommended piping plans

API Plans 02, 72 (Nitrogen purging)
False