Accessories & Attachments for Glas Reactor Systems

 

PTFE-covered Propeller stirrer shafts, U-shaped stirrer shafts and stirrer shafts with blades (PTFE is known as Teflon® by DuPont). The stainless steel core provides high mechanical stability and allows a safe fixing in the agitator. The stirrer shafts for professional stirring and mixing in laboratorys are available in all well-established standard sizes and even as made to measure on request.

 

Unique properties of the PTFE-covered (Teflon®) Stirrer shafts:

  • FDA conform
  • Free of extractable materials
  • Unbreakable
  • Nearly universal chemical resistance
  • Temperature resistant
  • Non-adhesive
  • Exchangeable
  • Safely fixable
  • Solid
  • Individual custom manufacture

 

Typical range of applications for stirrer shafts made of fluoroplastics:

 

  • For stirring and mixing of aggressive media such as acids, bases, gases and solvents
  • For the exchange of glass stirrer shafts with solid products or high power transmission from the agitator to the medium
  • At temperatures up to +250 °C
  • Ideal for very adhesive substances such as dyes and glues
  • Suitable for clockwise and counter clockwise rotation

High performance PTFE components

Completely made of PTFE. With ground joint NS 45/40 and three GL-threaded necks. Center neck serves as stirrer bearing. A special gasket made of PTFE and an FPM o-ring which is compressed by a GL screw cap provide a good sealing of the stirrer shaft. The lateral necks can be used for connection of tubes and tubing by means of Laboratory Screw Joints. Integrated special nut for unlocking of stuck ground joint components. Universal chemical resistance, the medium is only exposed to PTFE.

Combination of a borosilicate glass piece with ground joint, an interior PTFE shaft guide with integrated special gasket and a pressure screw made of PTFE with glass fibre. The FPM o-ring of the special gasket is compressed by the pressure screw and provides a good sealing of the stirrer shaft.

Ground joint cone made of PTFE with sealing rings on the outside to prevent sticking of the connection and to reduce danger of breaking glass. A special gasket made of PTFE and an FPM o-ring which is compressed by a GL screw cap provide a good sealing of the stirrer shaft. This gasket can be exchanged after wearing.

Combination of a borosilicate glass piece with ground joint, an interior PTFE shaft guide with integrated special gasket and a GL screw cap made of PPS. The special gasket made of PTFE and an FPM o-ring which is compressed by a GL screw cap provide a good sealing of the stirrer shaft. This gasket can be exchanged after wearing.

Technical informations & What you should know about Stirrer Shafts

 

BOLA Stirrer Shafts consist of a PTFE-jacketed stainless steel shaft and a stirrer blade made of solid PTFE. The stainless steel core provides high mechanical stability and allows a safe fixing in the agitator.

 

Unbreakable

All glass stirrer shafts which are commonly used in laboratories are very fragile. Dropping, stirring solid materials or too much power transmitted from the agitator to the product can cause broken glass. Due to their solid stainless steel core, BOLA Stirrer Shafts are protected against all these possibilities of breaking.

 

Universal chemical resistance

Due to the thick PTFE-jacket, the product which is stirred is only exposed to PTFE. This assures an almost universal chemical resistance. PTFE-jacketed stirrer shafts can be used whenever stirrer shafts made of PP (polypropylene), glass or stainless steel are not sufficient.

 

Temperatur resistance

Stirrer shafts made of PP (polypropylene) are deformed at temperatures exceeding +100°C and cannot be used any longer. All BOLA PTFE jacketed stirrer shafts can be used at temperatures of up to +250°C without any negative effects on their chemical resistance.

 

Non-adhesive

The surfaces of glass and stainless steel stirrer shafts allow adhesion of products (in particular such as dyes and glues). BOLA PTFE Stirrer Shafts, however, are non-adhesive and therefore eliminate adhesion of dyes and glues.

 

Interchangeability

 

At present, most stirrer shafts used in laboratories are made of glass. All BOLA Stirrer Shafts are available with the same diameters, lengths and surface qualities (KPG) as stirrer shafts made of glass. Thus, the user can easily replace the glass stirrer shaft with a PTFE-jacketed stirrer shaft and does not have to change agitators, couplings and guiding devices.

 

Safe fixing

 

The upper end of the BOLA Stirrer Shaft is not jacketed with PTFE and can therefore be fixed safely into the agitator or the stirrer coupling.

 

Solide stirrer blade

 

The stirrer blade is fixed tightly to the stirrer shaft and cannot be loosened by the product which is still turning after switching off the agitator. The stirrer shafts are suitable for clockwise and counterclockwise rotation.

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