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To compliment the range of machined PTFE rotary shaft seals, MOONTOWN offers a range of metal cased (rubber coated with style MCRT) rotary shaft seals for more arduous gas and liquid sealing duties.

The compact design helps close the gap between conventional rubber seals and mechanical seals.

Available in a choice of metal cases, including stainless steel, and a range of blended PTFE lip materials, these seals offer excellent chemical resistance and are capable of running at speeds up to 30m/s. Designs can also tolerate pressures to 35 bar and temperatures from -20°C to +250°C.

Various lip combinations are available to suit specific applications.
MCRT STYLES - COMMENTS

  • Rubber lip flexibility with bonded hardwearing PTFE lip

  • Reduced stick slip

  • Reduced power absorption

  • Kind to shafts

  • Wide range of PTFE lip materials

  • Rubber coating in Viton, Nitrile, Silicone, EPDM



    • MC STYLES - COMMENTS

  • Reduced friction

  • Pressure to 35 bar

  • Good chemical resistance

  • Surface speeds to 30 m/s

  • Can run dry or with abrasive media

  • Temperature range -20°C to +250°C


    • Part numbers for styles MCRT and MC20 will be allocated Moontown Limited.









    APPLICATIONS

  • Blowers

  • Vacuum pumps

  • Chemical pumps

  • Robotics

  • Hydraulic pumps and motors

  • Mixers






















    • MC20 STYLES - COMMENTS

  • Based on our M20 style spring energised seal, the assembly is self retaining

  • Available in a wide choice of PTFE blends with food and drug approved options








    • ORDERING EXAMPLE

  • MC50 - 25x42x7 - 03c3

  • MC50 = style

  • 25x42x7 = gland dimensions

  • 03 = lip material

  • C3 = case material






    • LIP MATERIALS

  • 03 = Carbon/graphite

  • 06 = Premium carbon filled PTFE

  • 09 = Plastic filled PTFE

  • 11 = Glass/moly filled PTFE

  • 15 = FDA approved filled PTFE




  • Gearboxes

  • Food and drug machinery

  • Chemical processing machinery

  • Rotary compressors

  • Drilling and tapping spindles

  • Encoders




































    • SHAFT SPECIFICATIONS

    Plunge grinding without lead is the preffered method of finish.

    SHAFT FINISH

  • Lubricating media 0.3µm Ra.

  • Non-lubricating or abrasive media 0.2/0.4µm RA

  • Vacuum < 0.2µm Ra.





    • MATERIALS AND HARDNESS

  • Hardenable steel or cast iron is the preferred choice.

  • Shaft hardness of 40 to 65 HRC is recommended for hydraulic oil at 0-15 bar.

  • For pressure greater than 15 bar and for use with non-lubricating and/or abrasive media, 58 to 65 HRC is recommended.


    • *Denotes non-preferred case od size