Item no. Description
1 Seal face, atmosphere side
2 Seal face, product side
4, 5, 13, 14 O-Ring
11 Seat, product side
12 Seat, atmosphere side

HSH-D

Features

  • For top entry drives
  • Double seal
  • Balanced
  • Independent of direction of rotation
  • Multiple springs rotating
  • Liquid-lubricated
  • Cartridge unit

Advantages

  • Ready-to-fit and factory-tested unit
  • With or without bearing available
  • Patented hydrodynamic grooves
  • Designed for high pressure range
  • Connection dimensions to customers' requirements
  • ATEX certification on request

Operating range

Shaft diameter:
d1 = 20 ... 500 mm (0.79" ... 19.69")
Pressure:
p1 = vacuum ... 250 bar (... 3,625 PSI)*,
p3 = p1 +10 %
Temperature:
t1 = -40 °C... +200 (350**) °C
(-40 °F ... +392 (662**) °F)
Sliding velocity:
vg = 0 ... 5 m/s (0 ... 16 ft/s)

* Depending on size, from 100 ... 150 bar (1,450 ... 2,175 PSI) executed as tandem seal (pressure reduction in 2 stages).
** with cooling flange

Materials

Seal faces: Carbon graphite
Seats: Silicon carbide, FDA conform
Secondary seals and metallic parts acc. to application and customers' requirement.

Standards and approvals

  • FDA

Notes

Options:
  • Cooling resp. heating flange
  • Leakage drain
  • Flush
  • Polymerization barrier

Recommended piping plans

Open circuit
e.g. EagleBurgmann SPA, EagleBurgmann SPN

Product links:
EagleBurgmann SPA
EagleBurgmann SPN manual
EagleBurgmann SPN automatic



Product variants

HSH(V)-D
Double seal

HSH(V)L-D
Double seal with integrated floating bearing (axial thrust bearing on request).

These seals are designed to be self-closing on the product side, i.e. they will remain closed even with pressure variations or a pressure reversal.