Dry running seals DR1, DR2
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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 applications
- Process industry
- Oil and gas industry
- Refining technology
- Petrochemical industry
- Chemical industry
- Pharmaceutical industry
- Power plant technology
- Water and waste water technology
- Food and beverage industry
- Agitators
- Mixers
- Reaction vessels
- Blowers
- Fans
Recommended piping plans
API Plans 02, 72 (Nitrogen purging)
