Notes
For the various stationary gland types and sizes on the market, DEPAC offers a series of single seals - like this one - without stationaries.
 
Type 159
  • PTFE (graphite) wedge
  • Independent of the direction of rotation

Convincing Arguments!

DYNAMIC, unbalanced mechanical seals are produced for general applications. OEMs often buy this type of seal in large quantities. Whether the one or the other version is selected depends on the OEM's preferences or on the conditions of use or installation at the customer end.

It is important to know that a dynamic mechanical seal with wedge design can damage the shaft surface with its axial movements. Such a seal should only be used therefore with shaft sleeves.

On seal versions equipped with a set of small springs, the pressure exerted on the seal faces is better and more uniform. This should be taken into consideration when selecting a seal.

It is easier to position mechanical seals when there are steps on the shaft sleeve, rotor or the like which can serve as locating shoulders.

Preference should be given to stationary faces which have elastic bearings to cushion shocks and vibrations from the equipment as far as technically possible.
RANGES OF APPLICATION
Pressure 10 bar (150 PSI)
Temperature Depends on the elastomer
Speed 15 m/sec. (3000 FKM)
   
SIZES
Dshaft 10 ... 100 mm
  3/8" ... 4"
   
MATERIALS
Metals DIN 1.4571, 316 SS
Springs DIN 1.4310, Hastelloy C
Faces CA, SC
Wedge PTFE, graphite
   

Other sizes, materials or design versions on request.












Notes
For the various stationary gland types and sizes on the market, DEPAC offers a series of single seals - like this one - without stationaries.
Type 159 A
DIN 24960
  • PTFE (graphite) wedge
  • Independent of the direction of rotation
  • L1KUdimensions with stationaries DS 1 and DS 2

Convincing Arguments!

DYNAMIC, unbalanced mechanical seals are produced for general applications. OEMs often buy this type of seal in large quantities. Whether the one or the other version is selected depends on the OEM's preferences or on the conditions of use or installation at the customer end.

It is important to know that a dynamic mechanical seal with wedge design can damage the shaft surface with its axial movements. Such a seal should only be used therefore with shaft sleeves.

On seal versions equipped with a set of small springs, the pressure exerted on the seal faces is better and more uniform. This should be taken into consideration when selecting a seal.

It is easier to position mechanical seals when there are steps on the shaft sleeve, rotor or the like which can serve as locating shoulders.

Preference should be given to stationary faces which have elastic bearings to cushion shocks and vibrations from the equipment as far as technically possible.
RANGES OF APPLICATION
Pressure 10 bar (150 PSI)
Temperature Depends on the elastomer
Speed 15 m/sec. (3000 FKM)
   
SIZES
Dshaft 10 ... 100 mm
  3/8" ... 4"
   
MATERIALS
Metals DIN 1.4571, 316 SS
Springs DIN 1.4310, Hastelloy C
Faces CA, SC, SSIC, TC
Wedge PTFE, graphite
   
Other sizes, materials or design versions on request.



Notes
For the various stationary gland types and sizes on the market, DEPAC offers a series of single seals - like this one - without stationaries.

O-ring dimensions or their "dash" numbers are available on request. (This information is also available in every installation manual.)

 
Type 161
DIN 24960
  • Dependent on the direction of rotation
  • "Right-hand" or "left-hand" spring   
  • L1Kdimensions with stationaries DS 1 and 2

Convincing Arguments!

DYNAMIC,unbalanced mechanical seals are produced for general applications. OEMs often buy this type of seal in large quantities. Whether the one or the other version is selected depends on the OEM's preferences or on the conditions of use or installation at the customer end.

It is important to know that a dynamic mechanical seal with O-ring can damage the shaft surface with its axial movements. Such a seal should only be used therefore with shaft sleeves.

It is easier to position mechanical seals when there are steps on the shaft sleeve, rotor or the like which can serve as locating shoulders. If this is not possible you can use locating rings with set screws against the shaft / sleeve.

Preference should be given to stationary faces which have elastic bearings to cushion shocks and vibrations from the equipment as far as technically possible.
RANGES OF APPLICATION
Pressure 10 bar (150 PSI)
Temperature Depends on the elastomer
Speed 15 m/sec. (3000 FKM)
   
SIZES
Dshaft 10 ... 100 mm
  3/8" ... 4"
   
MATERIALS
Metals DIN 1.4571, 316 SS
Springs DIN 1.4310
Faces CA, SC
O-Rings FKM, EPDM, FEP encaps., Chemraz, Kalrez, Aflas, etc.
   
Other sizes, materials or design versions on request.


Notes
The bellows are best seated when the surfaces of the shaft and sleeve are not too smooth or polished.
It is advisable to install the bellows with the help of low-surface-tension water as lubricant (do not use oil or grease).
Stationaries for Type 170 INCH are usually selected in accordance with the given installation dimensions. The dimensions L2 and L7 are derived accordingly from the stationary part.
Type 170
  • Short overall length
  • Available in inch and mm dimensions

Convincing Arguments!

DEPAC offers a complete, attractively priced range of mechanical seals with elastomer bellows specially for OEMs.

The various types are designed for applications in the most diverse installation spaces.

Using elastomer bellows has many advantages:
  • Rotating unit already preassambled
  • No sticking of O-rings
  • No scoring on shafts and shaft sleeves
  • Optimum absorption of movements due to shocks and vibrations
DEPAC mechanical seals - like this one - are delivered without stationaries. Stationary part DS 4 is normally used with this seal version. Other stationaries will change the installation length.

This low-cost mechanical seal alternative is a good choice particularly for high-volume requirements!
 
  • Rotating unit already preassambled
  • Independent of the direction of rotation
  • Wide range of applications
  • Low costs
  • Can be used with various stationary faces
  • For short and DIN-compliant installation spaces
  • No scoring of shaft sleeves
RANGES OF APPLICATION
Pressure 10 bar (150 PSI)
Temperature Depends on the elastomer
Speed 15 m/sec. (3000 FKM)
   
SIZES
Dshaft 10 ... 75 mm
  3/8" ... 3"
   
MATERIALS
Metals DIN 1.4301, 1.4571, 304 SS, 316 SS
Springs DIN 1.4310
Faces CA, SC, SSIC
Bellows EPDM, FKM
Other sizes, materials or design versions on request.






Notes
The bellows are best seated when the surfaces of the shaft and sleeve are not too smooth or polished.
It is advisable to install the bellows with the help of low-surface-tension water as lubricant (do not use oil or grease).
Stationaries for Type 170 INCH are usually selected in accordance with the given installation dimensions. The dimensions L2 and L7 are derived accordingly from the stationary part.
Type 170 A
  • L1KU installation length

Convincing Arguments!

DEPAC offers a complete, attractively priced range of mechanical seals with elastomer bellows specially for OEMs.

The various types are designed for applications in the most diverse installation spaces.

Using elastomer bellows has many advantages:
  • Rotating unit already preassembled
  • No sticking of O-rings
  • No scoring on shafts and shaft sleeves
  • Optimum absorption of movements due to shocks and vibrations
DEPAC mechanical seals - like this one - are delivered without stationaries. Stationary part DS 4 is normally used with this seal version. Other stationaries will change the installation length.

This low-cost mechanical seal alternative is a good choice particularly for high-volume requirements!

 

  • Rotating unit already preassembled
  • Independent of the direction of rotation
  • Low costs
  • Can be used with various stationary faces
  • For short and DIN-compliant installation spaces
  • No scoring of shaft sleeves
RANGES OF APPLICATION
Pressure 10 bar (150 PSI)
Temperature Depends on the elastomer
Speed 15 m/sec. (3000 FKM)
   
SIZES
Dshaft 10 ... 75 mm
  3/8" ... 3"
   
MATERIALS
Metals DIN 1.4301, 1.4571, 304 SS, 316 SS
Springs DIN 1.4310
Faces CA, SC, SSIC
Bellows EPDM, FKM
Other sizes, materials or design versions on request.



 
Type 175 A
DIN 24960
  • L1KU dimensions with stationaries DS 1 and DS 2

Convincing Arguments!

The large range of DEPAC mechanical seals developed specially for OEMs also includes a group of seals with "short bellows".

All seal versions can be used with various stationary faces.
The stationaries which should be given preference for design-related reasons are indicated in the descriptions.
Notes
The cups are best seated when the surfaces of the shaft and sleeve are not too smooth or polished.
It is advisable to install the cups with the help of low-surface-tension water as lubricant (do not use oil or grease).
Type 175 is also available in corresponding inch dimensions.
Information and delivery on request.
  • Low costs
  • Can be used with various stationary faces
  • For installation spaces of different length
  • No scoring of shaft sleeves
RANGES OF APPLICATION
Pressure 10 bar (150 PSI)
Temperature Depends on the elastomer
Speed 15 m/sec. (3000 FKM)
   
SIZES
Dshaft 10 ... 80 mm
inches sizes on request
   
MATERIALS
Metals DIN 1.4301, 1.4571, 304 SS, 316 SS
Springs DIN 1.4310
Faces CA, SC, SSIC
Bellows EPDM, FKM
   
Other sizes, materials or design versions on request.



Type 175 B

  • Types 175 B, C and D offer various installation lengths
  • Installation length L3 is calculated for use of stationary part DS 6

Convincing Arguments!

The large range of DEPAC mechanical seals developed specially for OEMs also includes a group of seals with "short bellows".

All seal versions can be used with various stationary faces.
The stationaries which should be given preference for design-related reasons are indicated in the descriptions.


Notes
The cups are best seated when the surfaces of the shaft and sleeve are not too smooth or polished.
It is advisable to install the cups with the help of low-surface-tension water as lubricant (do not use oil or grease).
Type 175 is also available in corresponding inch dimensions.
Information and delivery on request.

  • Low costs
  • Can be used with various stationary faces
  • For installation spaces of different length
  • No scoring of shaft sleeves
RANGES OF APPLICATION
Pressure 10 bar (150 PSI)
Temperature Depends on the elastomer
Speed 15 m/sec. (3000 FKM)
   
SIZES
Dshaft 10 ... 80 mm
inches sizes on request
   
MATERIALS
Metals DIN 1.4301, 1.4571, 304 SS, 316 SS
Springs DIN 1.4310
Faces CA, SC, SSIC
Bellows EPDM, FKM
   
Other sizes, materials or design versions on request.



Type 175 C

  • Installation length L5 is calculated for use of stationary part DS 6

Convincing Arguments!

The large range of DEPAC mechanical seals developed specially for OEMs also includes a group of seals with "short bellows".

All seal versions can be used with various stationary faces.
The stationaries which should be given preference for design-related reasons are indicated in the descriptions.


Notes
The cups are best seated when the surfaces of the shaft and sleeve are not too smooth or polished.
It is advisable to install the cups with the help of low-surface-tension water as lubricant (do not use oil or grease).
Type 175 is also available in corresponding inch dimensions.
Information and delivery on request.

  • Low costs
  • Can be used with various stationary faces
  • For installation spaces of different length
  • No scoring of shaft sleeves
RANGES OF APPLICATION
Pressure 10 bar (150 PSI)
Temperature Depends on the elastomer
Speed 15 m/sec. (3000 FKM)
   
SIZES
Dshaft 10 ... 80 mm
inches sizes on request
   
MATERIALS
Metals DIN 1.4301, 1.4571, 304 SS, 316 SS
Springs DIN 1.4310
Faces CA, SC, SSIC
Bellows EPDM, FKM
   
Other sizes, materials or design versions on request.




Type 175 D
  • Installation length L7 is calculated for use of stationary part DS 9 

Convincing Arguments!

The large range of DEPAC mechanical seals developed specially for OEMs also includes a group of seals with "short bellows".

All seal versions can be used with various stationary faces.
The stationaries which should be given preference for design-related reasons are indicated in the descriptions.
Notes
The cups are best seated when the surfaces of the shaft and sleeve are not too smooth or polished.
It is advisable to install the cups with the help of low-surface-tension water as lubricant (do not use oil or grease).
Type 175 is also available in corresponding inch dimensions.
Information and delivery on request.
  • Low costs
  • Can be used with various stationary faces
  • For installation spaces of different length
  • No scoring of shaft sleeves
RANGES OF APPLICATION
Pressure 10 bar (150 PSI)
Temperature Depends on the elastomer
Speed 15 m/sec. (3000 FKM)
   
SIZES
Dshaft 10 ... 80 mm
inches sizes on request
   
MATERIALS
Metals DIN 1.4301, 1.4571, 304 SS, 316 SS
Springs DIN 1.4310
Faces CA, SC, SSIC
Bellows EPDM, FKM
   
Other sizes, materials or design versions on request.

 







Notes
For O-ring dimensions or their "dash" numbers please ask us or one of our contracted partners. (This information is also available in every installation manual.)
Type 140
  • Mounted outside
  • Balanced
  • Carbon face with stainless steel armoring
  • Retaining ring is clamped to the shaft (positive retention/support system required above 10 bar)
  • No set screws
  • No metal parts in contact with the medium
  • Springs outside the medium
  • Hastelloy C springs

Convincing Arguments!

Balanced mechanical seals work with lower face pressure. This means lower face friction and therefore less wear on the face pair. The mechanical seal lasts longer!

Seals for mounting on the outside are the answer when there is little room in the stuffing box. As an additional benefit, no metal comes into contact with the medium. This mechanical seal is an economical option for highly aggressive media.
  • No metal parts in contact with the medium
  • Balanced for longer life
  • Independent of the direction of rotation
  • Can be used with various stationary faces
RANGES OF APPLICATION
Pressure 700 mm Hg (28" HG) – 28 bar (420 PSI)
Temperature Depends on the elastomer
Speed 25 m/sec. (5000 FKM
   
SIZES
Dshaft 18 ... 100 mm
  1" ... 4"
   
MATERIALS
Metals DIN 1.4571, 316 SS
Springs Hastelloy C
Faces CA, CE, SC, SSIC, TC
O-Rings FKM, EPDM, FEP encaps., Chemraz, Kalrez, Aflas, etc.
   
Other sizes, materials or design versions on request.

 





Type 159 B
  • PTFE (graphite) wedge
  • Step required on the shaft sleeve
  • Springs in the medium - Use only for clean media

Convincing Arguments!

Balanced mechanical seals work with lower face pressure. This means lower face friction and therefore less wear on the face pair. The mechanical seal lasts longer!
  • Balanced for longer life
  • Independent of the direction of rotation
  • Can be used with various stationary faces
RANGES OF APPLICATION
Pressure 700 mm Hg (28" HG) – 28 bar (420 PSI)
Temperature Depends on the elastomer
Speed 25 m/sec. (5000 FKM)
   
SIZES
Dshaft 18 ... 100 mm
  1" ... 4"
   
MATERIALS
Metals DIN 1.4571, 316 SS
Springs 1.4310, Hastelloy C
Faces CA, SC
Wedge PTFE, graphite
   
Other sizes, materials or design versions on request.

 


 




     

Type 159 C
DIN 24960 
  • L1KBdimensions with DS 1 and DS 2 

Convincing Arguments!

Balanced mechanical seals work with lower face pressure. This means lower face friction and therefore less wear on the face pair. The mechanical seal lasts longer!


Notes
The mechanical seals with mounting dimensions and length dimensions produced specially for DIN 24960 can also be used with various stationary parts.

  • For DIN L1KB dimensions
  • Balanced for longer life
  • Independent of the direction of rotation
  • Can be used with various stationary faces
RANGES OF APPLICATION
Pressure 700 mm Hg (28" HG) – 28 bar (420 PSI)
Temperature Depends on the elastomer
Speed 25 m/sec. (5000 FKM)
   
SIZES
Dshaft 18 ... 100 mm
  1" ... 4"
   
MATERIALS
Metals DIN 1.4571, 316 SS
Springs 1.4310, Hastelloy C
Faces CA, SC
Wedge PTFE, graphite
   
Other sizes, materials or design versions on request.

 





Type 186
DIN 24960
  • L1Kdimensions with stationaries DS 1 and DS 2 (stationaries are not in the scope of delivery) 
  • No scoring of the shaft sleeve
  • Springs outside the medium
  • Hastelloy C springs

Convincing Arguments!

Balanced mechanical seals work with lower face pressure. This means lower face friction and therefore less wear on the face pair. The mechanical seal lasts longer!

The O-ring mechanical seal Type 186 has a self-cleaning effect when media containing solid materials are used. The solid materials are unable to settle and the secondary seal moves "away" from the solids if wear occurs.
Notes
The mechanical seals with mounting dimensions and length dimensions produced specially for DIN 24960 can also be used of course in all other stuffing boxes.

DEPAC also offers these mechanical seals as special versions with larger dimensions than the listed standard sizes.
For O-ring dimensions or their "dash" numbers please ask us or one of our contracted partners. (This information is also available in every installation manual.)
  • For DIN L1KU dimensions
  • Balanced for longer life
  • Independent of the direction of rotation
  • Can be used with various stationary faces
  • No scoring of shafts or sleeves
  • Springs outside the medium
RANGES OF APPLICATION
Pressure 700 mm Hg (28" HG) – 28 bar (420 PSI)
Temperature Depends on the elastomer
Speed 25 m/sec. (5000 FKM)
   
SIZES
Dshaft 18 ... 100 mm
  1" ... 4"
   
MATERIALS
Metals DIN 1.4571, 316 SS
Springs Hastelloy C
Faces CA, SC, SSIC, TC
O-Rings FKM, EPDM, FEP encaps., Chemraz, Kalrez, Aflas, etc.
   
Other sizes, materials or design versions on request.

 




Type 196
DIN 24960
  • Mechanical seal with elastomer O-rings

Convincing Arguments!

All stationary mechanical seals from DEPAC are balanced.

Lower face friction means less wear and longer life with all its advantages.

Whatever the pump, DEPAC mechanical seals offer far better performance and reliability for all the design versions illustrated. The results are user-friendly and cost-effective sealing solutions for even critical applications such as hot water or media containing abrasives or other solid matter.

Put an end to sleeve wear and short seal life caused by dynamic, unbalanced  mechanical seals. Install DEPAC stationary seals!

Notes
To prevent the mechanical seal from slipping on the shaft or sleeve at operating pressures above 15 bar (225 PSI), DEPAC recommends drilling the shaft or sleeve where the set screws are to be tightened as a general precaution.
The mechanical seals with mounting dimensions and length dimensions produced specially for DIN 24960 can also be used of course with matching DEPAC adapters or glands in all other stuffing boxes. However you will need to check the related dimensions of your equipment.
DEPAC also offers its O-ring mechanical seals as special versions with larger dimensions than the listed standard sizes.

  • Stationary design principle
  • No scoring of pump shafts or sleeves
  • Balanced
  • No stepped sleeve required for the balancing
  • Stationary face support absorbs shocks and vibrations
  • Springs outside the medium
  • Independent of the direction of rotation
RANGES OF APPLICATION
Pressure 700 mm Hg (28" HG) – 30 bar (450 PSI)
Temperature Depends on the elastomer
Speed 30 m/sec. (6000 FKM)
   
SIZES
Dshaft 18 ... 100 mm
  1" ... 4"
   
MATERIALS
Metals DIN 1.4571, 316 SS/Hastelloy C
Springs Hastelloy C
Faces CA, CE, SC, SSIC, TC
O-Rings FKM, EPDM, PTFE, FEP encaps., Chemraz, Kalrez, Aflas, etc.
   
Other sizes, materials or design versions on request.