HRGS-D

HRGS-D For a larger view, please mouseover the image.
For a larger view, please mouseover the image.
Item Part no.
DIN 24250
Description
1.1.1 472.1 Seal face
1.1.4 477 Spring
1.2 475.1 Seat
2.1.1 472.2 Seal face
2.1.4 485 Drive collar
2.1.5 477 Spring
2.2 475.2 Seat
3 523 Shaft sleeve
4 513 Insert
10 441 Housing
13 Assembly fixture
  • Double seal
  • Balanced
  • Standard version with U-grooves (bi-directional)
  • Gas-lubricated
  • Contact-free operation
  • Suitable for solids containing media
  • Internally pressurized
  • Cartridge unit
  • Does not open in the event of buffer pressure failure, self closing at pressure reversal
  • HR principle with rotating seat
  • No friction on the seal faces, no heat generated at the seal or in the medium
Shaft diameter: ±dw = 20 ... 200 mm (0.787"... 7.874")
Pressure HRGS-DC: p1 = ... 22 bar (319 PSI)
p3 = ... 25 bar (363 PSI)
Pressure HRGS-DD: p1 = ... 40 bar (580 PSI)
p3 = ... 43 bar (624 PSI)
Operating temperature limits for:
EPDM -20 °C … +140 °C (-4 °F ... +284 °F)
FFKM -20 °C … +120 °C (-4 °F ... 248 °F)
FKM -20 °C … +170 °C (-4 °F ... 338 °F)
Sliding velocity: vg = 4 ... 25 m/s (13 ... 82 ft/s)
Differential pressure Δp = min. 3 bar (44 PSI), max. 16 bar (232 PSI) (internal pressure)
Product side (HRGS-DC, HRGS-DD):
Seal face: Silicon carbide (Q19, Q29)
Seat: Silicon carbide (Q1, Q2)

Atmosphere side HRGS-DC:
Seal face: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B)
Seat: Silicon carbide (Q1, Q2)

Atmosphere side HRGS-DD:
Seal face: Silicon carbide (Q19, Q29)
Seat: Silicon carbide (Q1, Q2)

Springs: CrNiMo steel (G), Hastelloy® C-4 (M)
Metal parts: CrNiMo steel (G), Hastelloy® C-4 (M)
  • Chemical industry
  • Refining technology
  • Gases and liquids
  • Media which require high purity
  • Environmental harmful media
  • Pumps