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OmniLip, PTFE Rotary Lipseals

OmniLip, PTFE Rotary Lipseals
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OmniLip, PTFE Rotary Lipseals

Product catalog summary
Introduction
OmniLip™ rotary shaft seals by Saint-Gobain Performance Plastics are designed for enhanced chemical resistance and lower friction, suitable for applications like hydraulic motors and chemical pumps. They operate at speeds up to 30 m/s and temperatures from -20ºC to 200ºC, offering a cost-effective alternative to mechanical face seals.
Seal Nomenclature
The document details the components of OmniLip™ and DynaLip® seals, including outer and inner cases, washers, extension springs, and sealing elements, with material recommendations for optimal performance.
Materials and Ordering
Saint-Gobain provides proprietary materials for seals, with a guide for selecting materials based on application needs, emphasizing the importance of considering application variables for estimating seal life.
OmniLip™ Seals
Different series of OmniLip™ seals are designed for specific applications. Series 10 and 11 are for general use, while Series 70 and 71 are for high-pressure applications. Shaft hardness and PV values are crucial for performance.
DynaLip® Lip Seal
DynaLip® seals are economical for smaller quantities, designed for easy installation and removal, with series for normal and extreme temperatures.
Gland Dimensions
Standard dimensions for shafts and bores are provided based on DIN 3760, with options for non-standard sizes.
PV Value
The PV value, a product of pressure and surface velocity, is critical for seal performance. Cooling and lubrication can increase the limiting PV, and performance testing is recommended for specific applications.
Hardware Design
Recommendations for shaft material and hardness are provided to ensure compatibility with seals, enhancing performance and longevity.
Material Specifications
Hardenable steel is preferred for shafts, with specific hardness levels recommended based on pressure and speed. Acceptable bore materials include cast iron, steel, aluminum, and plastics for DynaLip® seals.
Surface Roughness
The seal contact surface should have a roughness of 0.2 to 0.4 µm Ra, and the bore finish should be approximately 0.8 µm Ra or smoother.
Shaft and Bore Recommendations
Shafts should have a lead-in chamfer and be free from burrs. Bore tolerance is H8, and shaft tolerance is h11, with specific chamfer dimensions provided.
Seal Installation
Care is needed to avoid damaging the sealing lip during installation. OmniLip™ and DynaLip® seals should be pressed into the bore evenly using appropriate tools.
Application Data
An application data form is provided for specifying details such as device sealed, number of units, type of motion, media/fluid, operating pressures, temperatures, RPM, and other critical parameters.
Company Overview
Saint-Gobain Performance Plastics specializes in engineered sealing devices, offering advanced solutions with over three decades of experience in PTFE and high-performance plastics and elastomers.
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Catalog excerpts

OmniLip, PTFE Rotary Lipseals-2

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Seal Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Materials/How To Order Seals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3OmniLip > Seals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4DynaLip > ٮ Lip Seal. . . . . . ....

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OmniLip, PTFE Rotary Lipseals-4

*See page 3 for material selection +32 (3) 4582828 >

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OmniLip, PTFE Rotary Lipseals-5

ٮ Part Number Example: > NOTE: If it is not clear which seal design is appropriate,pleasecomplete the Application Data Form on Page 11 and fax ormail to the attention of Saint-Gobain Performance Plastics Sealing Technology Center. *(Always XX for DynaLip > which do not have metal support cases.) > MaterialCode Name andDescription Fluoroloy > ή SL Standard material for secondary elements and dust excluders. Good general purpose material for heatand wear resistance. Performs well on shaft surfaces with moderate hardness. Good in both lubricated and non-lubricated medias (good wear resistance).Extreme...

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OmniLip, PTFE Rotary Lipseals-6

Series 10 > Series 11 Series 10 and 11 are economical OmniLip > ٙ seal designs employed in a wide range ofapplications. They are used in lubricated and non-lubricated environments. They can be used at shaft speeds to 25 m/s in lubricated media and pressures to 0,7 MPa. Typical applications are: gear boxes and environmental seals. Series 30 and 31 incorporate a threaded sealing lip which pumps the media away from theseal. These designs should only be used in lubricating media. These designs offer long life and positive sealing at shaft speeds to 30 m/s. They should not be used for pressures greater...

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OmniLip, PTFE Rotary Lipseals-7

Seal TypeFor TemperaturesSeal TypeFor NORMAL Temperatures EXTREME Series 13 > Series 14 Series 13 and 14 are economical DynaLip > ή designs employed in a wide range of applications. They are used in lubricated and non-lubricated environments. They can be used at shaft speeds to 25 m/s in lubricated media and pressures to 0,5 MPa. Typical applications are: gear boxes and environmental seals. > Series 23 > Series 24 Series 23 and 24 offer improved sealing of gasses and abrasive media due to their higher lip load.They also offer additional runout capability. They can operate at speeds and pressure...

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OmniLip, PTFE Rotary Lipseals-11

3,0 mmMAX. 3,0 mmMAX. SEALINGLIPEXTENSION OmniLip > ՙ seals incorporating two sealing lips, or a dust excluder, mayhave seal lip extensions as shown. This must be considered when designing a seal gland. >

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OmniLip, PTFE Rotary Lipseals-12

are must be taken not to damage the sealing lip duringthe installation of the shaft through the seal. It is mucheasier to install the seal if the shaft enters the seal fromthe atmosphere side. If this is not possible, or if the seal must be installed on a shaft which has a keyway or splines, please contact the factory. We can help with the design and manu- facture of simple tooling to assure that the seal is installed without damage. OmniLip > seals and DynaLip > ٮ sealsshould be pressed into the bore evenly. A tool, as shown below, simplifies this operation. > Care is essential in the installation...

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OmniLip, PTFE Rotary Lipseals-15

aint-Gobain Performance Plastics has long been known foradvanced sealing solutions. We have more than threedecades of experience with PTFE, plus a full range of high performance plastics and elastomers.Our specialty is engineered sealing devices includingOmniSeal +32 (3) 4582828 . > , DynaLip > ٮ , andOmniSeal > seals, we bring you the advantages of ourlatest production technology for timely and cost-effective answers to your most critical sealing applications.We welcome the opportunity to help you achieve thebest technical and economical solutions for your sealing requirements. For a complete...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.