HRGS-D

Features mechanical seal hrgs-d

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)

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