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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. toDIN 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 |
HRC...N
Features
- 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
Advantages
- 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
Operating range
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
Materials
Seal face: Silicon carbide (Q1, Q2)
Seat: Carbon graphite antimony impregnated (A), Silicon carbide (Q1, Q2)
Standards and approvals
- DIN 24960 C
Recommended applications
- Dirty, abrasive and solids containing media
- Various chemical processes
- Chemical industry
- Process industry
- Petrochemical industry
- Mining industry
- Sugar industry
- Chemical standard pumps
Product variants
HRC1000N
Single seal
HRC1100N
Same design as HRC1000N, but with a shorter cover plate featuring integral spring and drive pin pockets (Item no. 8). No adapter (Item no. 9). Shaft sleeve (Item no. 2) uncoated. Differs from modular system!
HRC2000N
Single seal with pressureless quench for cooling, featuring guide sleeve (Item no. 12) baffle (Item no. 17), adapter (Item no. 15) and lip seal (Item no. 13) on the atmosphere side. Option: Throttle ring for sealing steam quench on the atmosphere side.
