MANOY® Shaft Seal

Type 231

MANOY® Shaft Seal

Type 233

MANOY® Shaft Seal

Type 236

MANOY® Shaft Seal

Type 238

TECHNICAL DATAS

outer sealing outer sealing inner sealing inner sealing
Motion Motion Motion Motion
rotary, partially static, partially linear rotary, partially static, partially linear rotary, partially static, partially linear rotary, partially static, partially linear
Direction of pressure Direction of pressure Direction of pressure Direction of pressure
unidirectional unidirectional, bidirectional unidirectional unidirectional, bidirectional
Operating pressure (MPa) Operating pressure (MPa) Operating pressure (MPa) Operating pressure (MPa)
15 15 15 15
Rotary speed (m/s) Rotary speed (m/s) Rotary speed (m/s) Rotary speed (m/s)
3 3 3 3
Diameter range (mm) Diameter range (mm) Diameter range (mm) Diameter range (mm)
8 to 2000 8 to 2000 6 to 2000 6 to 2000
Housing Housing Housing Housing
non-split
(from 14 mm Ø) 		non-split
(from 14 mm Ø) 		non-split
(from 25 mm Ø) 		non-split
(from 25 mm Ø)
Type 231 outer sealing
Motion rotary, partially static, partially linear
Direction of pressure unidirectional
Operating pressure (MPa) 15
Rotary speed (m/s) 3
Diameter range (mm) 8 to 2000
Housing non-split
(from 14 mm Ø)
Type 233 outer sealing
Motion rotary, partially static, partially linear
Direction of pressure unidirectional, bidirectional
Operating pressure (MPa) 15
Rotary speed (m/s) 3
Diameter range (mm) 8 to 2000
Housing non-split
(from 14 mm Ø)
Type 236 inner sealing
Motion rotary, partially static, partially linear
Direction of pressure unidirectional
Operating pressure (MPa) 15
Rotary speed (m/s) 3
Diameter range (mm) 6 to 2000
Housing non-split
(from 25 mm Ø)
Type 238 inner sealing
Motion rotary, partially static, partially linear
Direction of pressure unidirectional, bidirectional
Operating pressure (MPa) 15
Rotary speed (m/s) 3
Diameter range (mm) 6 to 2000
Housing non-split
(from 25 mm Ø)

APPLICATIONS

  • Rotary uni­ons
  • Rotary actu­at­ors 
  • Rotary cyl­in­ders
  • Swiv­els 
  • Valve spindles

Types 231 to 238 are used for lub­ric­at­ing flu­ids and to a lim­ited degree also for dry run­ning and purely rotary or oscil­lat­ing motion. They are only partly suit­able for hel­ic­al motion.

CHARACTERISTICS

  • Sys­tem pres­sure activ­ated seal energization 
  • For use at low to medi­um pres­sure at low speed 
  • Except for small dia­met­ers can be installed in non-split grooves 
  • Very long seal life due to high abra­sion resistance 
  • Nar­row, space sav­ing construction 
  • Min­im­um coef­fi­cient of friction 
  • No chat­ter (stick-slip) at low speed 
  • Does not stick to the mat­ing sur­face after pro­longed shutdown 
  • Avail­able for any dia­met­er up to 2,000 mm

TEMPERATURE RANGE

From -54 to +200 °C (tem­por­ar­ily +260 °C)

but depend­ent on the mater­i­al of the seal and the O-ring in each case.

MATERIALS

IDG seal material

  • 82B (hydraul­ics) up to 10 MPa
  • 32B (pneu­mat­ics) up to 15 MPa
  • 36B up to 25 MPa

O-ring elast­omer

  • FKM

Spe­cial mater­i­als are used at low temperatures

Mater­i­al descrip­tion and oth­er mater­i­als for wider applic­a­tions FIND OUT MORE >

PV lim­its

This dia­gram gives PV lim­its which should be con­sidered as recommendations.

Note:
For dia­met­ers S < 50 mm, the oper­at­ing para­met­ers must be fur­ther restric­ted due to poor heat dissipation.

Prac­tic­al pre­lim­in­ary tests are neces­sary near the lim­it curves and also for tem­per­at­ures and flu­ids dif­fer­ent from the ones used here.

Flu­id: Hydraul­ic oils, hydraul­ic flu­ids HFA and HFB
Tem­per­at­ure: 80 °C max.
Shaft seal mater­i­al: 82B
Motion: Rotary or oscillating
➀ Non-inter­mit­tent
➁ Inter­mit­tent 6s:6s