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The TB05 mechanical seal range is designed for universal application and the interchangeable parts concept is ideal for stock rationalisation. The design features are single seal, balanced, independent on direction of rotation , Wave spring or Multiple springs. The dimensions are according to DIN 24960 standard . The TB05 series are equivalent to Burgmann type H7N/H75 series pump seals. The seal faces are loosley inserted and can be easily exchanged, the trust ring is retained by the drive lugs preventing the springs falling out.
Performance Capabilities
d = 14 - 200 mm
p = 25 bar
t = -50 – 200 °C
vg = 20 m/s |
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Sign Specialty:
single seal
balanced/unbalanced can be chose
multiple springs
equivalent to type 109/109B/9/9B/8-1/8B1/909 series |
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The TB04 mechanical seal range is designed for universal application and ideal suited for standardisation. The design features are single seal, unbalanced, independent on direction of rotation. The dimensions are according to DIN 24960 standard . The TB04 series are equivalent to Burgmann type M7N/M74 series pump seals.
The loosely inserted seal faces are easily exchanged, permitting all combinations of materials and stock rationalisation.
Performance Capabilities
d = 14 - 200 mm
p = 16 bar
t = -40 – 205 °C
vg = 20 m/s |
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Mechanical seals of the TB06 series are designed for media containing solids or with high viscosity e.g. sugar, paper, sewage and waste water industry. The spring is not in direct contact with the product. The robust and reliable design avoids sticking and clogging. The design features are single seal, balanced, independent on direction of rotation , spring product protected. The dimensions are according to DIN 24960 standard . The TB06 series are equivalent to Burgmann type HJ92N/HJ977GN series pump seals.
Performance Capabilities
d = 18 - 100 mm
p = 25 bar
t = -40 – 205 °C
vg = 20 m/s |
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Double seals in the TB07 series have the same design-features as the "TB04" of single seals. Apart from the installation length of the drive collar, all fitting dimensions (d1 < 100 mm) conform with EN 12756 (DIN 24960).
Double seals to DIN 24960:
DIN specifies single seals in back-to-back arrangement. It is possible, therefore, to choose from the following combinations :
As Burgmann’s recommendation :
unbalanced/unbalanced (z.B. M7N/M7N)
balanced/balanced (z.B. H7N/H7N)
unbalanced/balanced (z.B. M7N/H7N)
Performance Capabilities
d = 18 - 200 mm
p = 16 - 230 bar
t = -50 – 200 °C
vg = 20 m/s |
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Double seals of the TB08 series have the same design-features as the “TB05” of single seals (easy-to-replace seal faces, etc.). Apart from the installation length of the drive collar, all fitting dimensions (d1<100 mm) conform with EN 12756 (DIN 24960). This seals is equivalent to Burgmann type H74-D Pump Seals.
Performance Capabilities
d = 14 - 200 mm
p = 25 bar
t = -50 – 200 °C
vg = 20 m/s |
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Technic characteristic
Single seal
Balanced/unbalanced can be chose
Multiple springs
Currency and flexibility
Equivalent to type 59U/59B/58U/58B series |
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Technic characteristic
Single seal
Balanced/unbalanced can be chose
Multiple springs
Equivalent to type 9T/8-1T/9BT/8B1T series |
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Mechanical seals of the TB03 series are a cost effective type of a balanced seal. The design features are single seal, balanced, conical spring, dependent on direction of rotation. The dimensions are according to DIN 24960 standard . The TB03 series are equivalent to Burgmann type H12N series pump seals.
They have the same robust and reliable construction as the unbalanced spring seals . These seals are primarily used in the chemical sector and in water pumps.
Performance Capabilities
d = 10 - 80 mm
p = 25 bar
t = -50 – 200 °C
vg = 15 m/s |
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The TB02 series mechanical seals are very popular. The design features are single seal, unbalanced, conical spring, dependent on direction of rotation. The dimensions are according to DIN 24960 standard . The TB02 series are equivalent to Burgmann type M3 series . Extremely rugged and reliable, they cover a wide spectrum of applications – in water pumps, sewage pumps, submerged pumps, chemical pumps, etc.
Performance Capabilities
d = 10 - 80 mm
p = 10 bar
t = -40 - 205 °C
vg = 10 m/s |
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Chesterton’s 186HT Single Bellows High Temperature Cartridge seal is designed to provide greater reliability in the most demanding services.
Chesterton offers the proven, nesting ripple bellows design. In the nesting ripple design, all bellows plates are identical and contoured to permit nesting when compressed. Nesting distributes pressure uniformly accross the span of the bellows. The end result is less stress at the bellows welds.
While the industry standard is nine convolutions bellows spring, Chesterton uses a twelve convolution bellows core.The twelve convolutions achieves maximum bellows plate thickness while it does not compromise the bellows spring rate. The design offers lower heat generation and greater seal reliability. |
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Chesterton’s 442 Split Mechanical Seal construction enables the seal to handle pressures three and one-half times higher than conventional split seals. The 442 is the only split seal specifically designed to be able to withstand vacuum in the stuffing box. This makes it the ideal seal for main and auxiliary condensate pumps.
Fast, Easy Installation
The 442 provides the sealing capability of traditional mechanical seals without the need to disassemble and realign the pump. All parts are split to slip around the shaft and assemble in place. The 442 seal is a dramatic time saver with fast, easy installation, plus it can be rebuilt quickly and easily. Downtime is minimized and driver/equipment alignment is eliminated.
Main Features:
Fast, easy installation without the need for pump disassembly.
Specifically designed to seal in applications where stuffing box is in a vacuum.
Fast, economical and easy rebuild of seal in the field eliminates the need for a spare seal.
Adjustable gland fits 2, 3 or 4 bolt patterns. |
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Chesterton’s 442M Split Mechanical Seal
The 442M provides the sealing capability of traditional mechanical seals without the need to disassemble and realign the pump. All parts are split to slip around the shaft and assemble in place. The 442 seal is a dramatic time saver with fast, easy installation, plus it can be rebuilt quickly and easily. Downtime is minimized and driver/equipment alignment is eliminated.
Main Features:
Fast, easy installation without the need for pump disassembly.
Fast, economical and easy rebuild of seal in the field eliminates the need for a spare seal.
The 442M avoids equipment dis-assembly during seal change.
Designed to handle the high runout conditions of mixers and agitators.
Patented automatic centering.
Exclusive design features ensure maximum performance.
Compact seal design occupies minimum space.
The ultimate split seal for mixers, agitators and specialty equipment .
ISO 9001 CERTIFIED |
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Chesterton’s 442M Split Mechanical Seal
External springs are non-clogging and act as a wear gauge.
Double captured gland and holder gaskets resist extrusion.
Narrow face rotates to minimize wiping effect.
Patented centering buttons provide automatic centering and are FDA approved for sanitary conditions.
Captive shaft O-ring makes installation simple.
Dual flush ports allow piping from either side.
Designed specifically with high-runout equipment in mind
Split design allows quick, economical installation without equipment disassembly.
Economical repair kits allow the seal to be field refurbished
442M split mixer seal is specifically designed to reliably perform in services which routinely exhibit large amounts of radial shaft runout.
Large internal clearances allow radial shaft movement without damaging seal components.
Patented Automatic Centering Maximum radial runout performance demands perfect centering.
Unique centering "buttons" positively center the gland about the rotating element. This ensures maximum radial travel in all directions. Face "Wiping" is minimized in rotating narrow face designs, if the equipment shaft is not concentric to the stuffing box bore, particles are prevented from being transported across seal face wear track due to the wiping action created. The lapped seal faces are nprotected from damage. |
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Standard pressure tanks, manufactured in accordance with API 682 standards, can be supplied in various applications using circulation pumps and process instruments for controlling seal running parameters.
For heavy duty applications there are complete internal flushing and heating/cooling coils to cater for customer's requirements. Proper nitrogen gas pannels are available for dry-running mechanical seals. |
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Controller-One
CONTROLLER-ONE is a seal set of variable geometry, planned and produced to answer the request for a secure product, reliable and corresponding to the regulations concerning the reduction of the fugitive emissions of VOC and HAP. In the middle are three graphite rings with a conical torso configuration of very low density "activated" by two graphite rings with a conical torso configuration at a different angle and at high density. All that is contained by two, GR8807 Incobraid® rings, as wiper and Anti-Extrusion Rings: here is the Controller-One configuration! The innovative conical torso configuration of the graphite rings with different density that allows a great radial expansion already with modest torque loads. It fully utizes the elastic properties, reducing the friction strength exercised by the gasket on the stem during the movement, also decreasing damage sustained by the gasket itself, allowing a reduction of the effort requested by the actuator in the motion act. The great radial expansion capacities of the Controller-One is able to execute with success of the re-torque required to compensate the loss of weight of the gasket caused by the scratching of the stem, and keeping an unchanged seal efficiency troughout a long period of time.
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Sealing – with innovative brush solutions from Mink-Bürsten.
• In machine tools, Mink strip brushes provide protection against lubricating emulsions and flying chips
• In woodworking machinery, our sealing elements block off dust and noise
• These brushes make ideal permanent seals for doors, gates, openings, apertures and gaps
• They provide a continuous sealing effect over the entire width of the working surface
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PTFE as a fluorocarbon compound (polytetra-ethylene) is a suitable basic compound for sealing and guiding elements used in compressors.
Highlights
even without lubrication PTFE offers an exceptionally low friction coefficient when working together with metals
PTFE is highly anti-adhesive, no stick-slip effect
PTFE offers high elongation properties enabling sealing and guide rings to be mounted on single-part pistons with great ease
Typical Applications
compressors with full or low lubrication
rotary gas pumps
expansion machinery
liquid gas and vacuum pumps
wobble piston compressors
rotary compressors for loading and unloading silos |
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