Class E unbalanced seals E01, E02, E11, E12
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E01/E11 unbalanced seal
Class E unbalanced seals
E01, E02, E11, E12
Features
- Rotating single-spring pusher seals
- Unbalanced
- Robust seal design
- Available as O-Ring or wedge variants
- Hard/hard seal face combination available
- Independent of direction of rotation
(E11, E12) - Available as single, dual and tandem arrangements
Advantages
- Ideal for general purpose applications
- Suitable for abrasive, corrosive and viscous fluids
- Over 35 years of running reference in the field
- Narrow cross-section allows the seal fitment in narrow stuffing boxes
- "Lower inventory since all parts except seal ring composite and follower are interchangeable with Class E balanced seals (E03, E04, E13, E14).
Operating range
Shaft diameter: d = 25 … 100 mm (1" ... 3.94")
Pressure: p = vacuum to 16 bar (232 PSI)
Temperature:
t = -75 °C ... +260 °C (-103 °F ... +500 °F)
Sliding velocity: vg = 15 m/s (49 ft/s)
Axial movement: ±1.5 mm
(Consult EB for applications outside above limits).
Materials
Seal ring: Carbon graphite resin impregnated,
Carbon graphite antimony impregnated,
Tungsten carbide, Silicon carbide
Mating ring: Silicon carbide, Tungsten carbide
Secondary seals: FKM, NBR, FFKM, PTFE
Springs: SS 316
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
- Pulp and paper industry
- Water and waste water technology
- Mining industry
- Building services industry
- Food and beverage industry
- Sugar industry
- Horizontal and vertical pumps, agitators, mixers
Recommended piping plans
API Plans 01, 02, 03, 11, 12, 13, 14, 21, 22, 23, 31, 32, 41, 52, 53A, 53B, 53C, 54, 55, 61, 62, 65A, 65B, 66
Product variants
E02 / E12 Variant with wedge as secondary seal.
