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CHO have been designing and manufacturing PTFE Rotary shaft seals for over 20 years, for applications ranging from large diesel engines to Racing Cars, and serve both OEM and aftermarket requirements.
CHO are the only sealing company that offer all 3 styles of PTFE seal construction, these being, moulded, clamped and crimped. As we are not constrained to a particular style, like most companies are, we can offer the best technical and commercial solution to suit your application and quantities.
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Competitively priced seals for rotary shafts
- Suitable for many plant and machinery duties.
- Full range of designs for different working environments.
- Choice of elastomeric lip materials and metal casings.
- All standard shaft sizes included.
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OmniLip™ and DynaLip© seals are PTFE-based rotary lip seals. These seals are used in pumps and compressors, engine crankshafts, robotics, diesel engines, pharmaceutical and food processing, blowers, mixers, heavy industry and steel mill applications.
>Sizes to DIN3760 dimensions.
>Low friction, long life.
>Up to 3 meter diameter.
>To suit specific industry needs.
>Broad chemical compatibility.
>Temperature: -50°C up to +200°C.
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The new generation of GFD-rotary shaft lip seals were especially developed for use under difficult and extreme conditions.
The superior properties of PTFE as lip material combined with a corrosion resistant stainless steel housing provide the particular advantages of these GFD-rotary shaft seals.
Advantages and applications:
- Temperature range from -70°C to +260°C
- Lowest friction and power draw
- Long seal life because of wear resistant lip materials
- Almost universal chemical resistance (depending on lip material)
- Suitable for dry running and poorly lubricated conditions
- High shaft speed up to 36 m/s
- Exchangeable with standard lip seals according to DIN 3760
- For food or pharmaceutical industry
Applications:
- Chemical processing equipment
- Hydraulic motors
- Compressors
- Shafts on gearboxes
- Rotary
- Blowers
- Ventilators
- Actuators
- Rotary unions
- Encoders
- Mixers and Dryers
- Robotics
- Milling-machines
- Pumps of all kinds
- Pharmaceutical and food processing equipment
- Centrifugal machines
- Engines and Compressors crankshaft
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Spring-energized seals made of PTFE are used for sealing reciprocating pistons and rods as well as rotary and swiveling applications.
Highlights
outstanding chemical resistance against aggressive media
suitable for high temperature ranges between –95°C and +300°C
suitable for media pressures up to 700 bar
Typical Applications
needle seals in painting lines
metering devices
valve seals in bottling lines
automotive and aerospace applications
medical technology/endoscopy
solenoid valves
measuring technology/HPLC-technology
general industrial machinery
chemical equipment
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Bal Seal Engineering canted-coil springs produce a nearly constant force over the working spring deflection unlike other types of springs where the spring force is directly proportional to deflection. Our products are available in continuous lengths or circular spring form with outside diameters from 0.020" (0.51mm) and wire sizes as small as 0.0025" (0.64mm). Spring forces are determined by material, coil size, and geometry. Bal Seal Springs are be custom engineered to meet your application requirements.
Bal Seal can accommodate high volume production requirements while meeting today's exacting quality standards.
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Radial Oil Seal
Radial lip seal design for shafts and spindles. Consisting of a rubber sleeve, metal stiffening ring and a spiral tensioning spring. Oil seals provide long lasting sealing efficiency. Available with or without external dust lip, they are self retained in an open groove to ISO 6194 and DIN 3760. Versions available without tensioning spring which can be used as a scraper and for helical movements.
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Greene, Tweed's Enerlip® Seal combines low breakaway friction, reduced leakage and easy installation with a mating PTFE-type heel bearing. The Enerlip HP has an additional anti-extrusion ring. At low pressure, the Enerlip functions as a partially capped, single-acting elastomer lip seal. At high pressure, the Enerlip acts as a pressure-activated PTFE seal, with optimum sealing action at pressures from 0 to 5000 psi (0 to 350 bar).
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Features:
- Teflon® compounds with almost universal chemical compatibility
- Stainless steel springs for corrosion resistance
- Wide temperature range - 400ºF to +600ºF
- Static and dynamic applications
- Vacuum to 60,000 psi
- Can run dry or lubricated
- Low friction seals
- Sizes up to 60" diameter
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The MSE® seal consists of a PTFE or other polymer energized by a corrosion-resistant metal spring. When the seal is seated in the gland, the spring is under compression and applying force on the gland-sealing surfaces. This creates a tight barrier to prevent gas or fluids from leaking. The spring also provides resiliency to compensate for seal wear, gland misalignment or eccentricity. While spring force provides adequate force for sealing at low pressure, at high pressure the system pressure augments the spring force to provide an even tighter seal. MSE seals are precision machined from PTFE, filled PTFE and other high-performance polymers. MSE seals work consistently under a wide array of temperatures and pressures. Greene, Tweed offers over 100 jacket materials, four standard spring materials, and four standard spring designs to meet your sealing needs.
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Packing Products: Lip seals and other traditional “packing” products can be formed using Parofluor Series materials. Available profiles include u-cups, valve stem packings, vee packings and wipers, among many others.
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