HRC...N

HRC...N For a larger view, please mouseover the image.
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HRC3300NF
With uni-directonal pumping screw. Dual seal remains closed in case of barrier pressure failure and closes in the event of pressure reversal. With guide sleeve (item no. 12). Operation as single seal with quench possible. Encapsulated stationary seat on the product side (bursting protection). Parted seal sleeve for application of highly restistant materials e.g. Hastelloy®.

Item Part no. to
DIN 24250
Description
1.1.1 472.1 Seal face
1.1.2 474 Thrust ring
1.1.3 477.1 Spring
1.2 475.1 Seat
2 523 Shaft sleeve
4 513 Insert
8 160 Cover plate
9 509 Spring carrier
12 Spring protection sleeve
19 Plug
24 Assembly fixture
  • Cartridge
  • Balanced
  • Independent of direction of rotation
  • Stationary multiple springs
  • Spring protection sleeve
  • Variant for operation with pressureless quench available (HRC2000N)
  • Dual seal with and without pumping screw (HRC3300NF, HRC3300N) available
  • Insensitive to solids containing media. Solids content 40 % (single seal), 60 % (double seal)
  • Springs protected from product and leakage
  • Variant with short installation length to meet limited space conditions (HRC1100N)
  • Dual seal remains closed in case of barrier pressure failure, self-closing at pressure reversal (HRC3300NF)
  • Operation under vacuum without seat locking possible
  • No damage of the shaft by dynamically loaded O-Ring
  • Insensitive to shaft deflections due to stationary design
Shaft diameter:
d10 = 30 ... 60 mm (1.181"... 2.362")
Pressure: p1 = 23 bar (334 PSI)
Temperature:
t = -20 °C ... +160 (200*) °C
(-4 °F ... +320 (382*) °F)
Sliding velocity: vg = 20 m/s (66 ft)
Axial movement: ±1.0 mm

* Due to shrinking
Seal face: Silicon carbide (Q1, Q2)
Seat: Carbon graphite antimony impregnated (A), Silicon carbide (Q1, Q2)
  • Chemical industry
  • Process industry
  • Petrochemical industry
  • Mining industry
  • Sugar industry
  • Dirty, abrasive and solids containing media
  • Various chemical processes
  • Chemical standard pumps