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Description
Ultraglide is a reformulated hydrogenated nitrile (HNBR) material with optimised properties that greatly extend the working life of Walkersele® radial lip seals when running for long periods under hot and abrasive conditions.
Walkersele® Ultraglide is the result of a five-year research programme by James Walker Technology Centre. In field trials on the intermediate stand of a hot rolling mill, Walkersele Ultraglide® has given six times the maintenance-free life of a traditional nitrile (NBR) seal.
This operational success is backed by comparative test results that show our Ultraglide grade reformulated-HNBR matches the strength of fluoroelastomer FKM and nitrile NBR, and provides far lower friction plus vastly superior thermal conductivity and abrasion resistance.
Special features
Typical applications
Radial lip seal for transmission systems, gearboxes and rotary plant in metallurgical industries, power generating industry, cement works, mining and quarrying, rail traction systems, etc. Walkersele® Ultraglide is suitable for use with ceramic shafts.
Media compatibility
Excellent resistance to all lubricating oils, fuels, air, hot and cold water, dilute acids and alkalis.
Seal construction
Flexible back of HNBR-proofed aramid/glass fibre, with lip of Ultraglide reformulated-HNBR.
Maximum under-lip temperature
150°C constant: but note that under-lip temperature can often be substantially higher (eg, by 30°C) than fluid media temperature.
Maximum surface speed
30m/s in abrasive environments with Walkersele® D6 design.
How supplied
Walkersele® Ultraglide is manufactured to order in Walkersele® D6 and D7 designs. Both designs are supplied in endless form, and are also available as Walkersele® OSJ-2 for On-Site Joining using our patented technique.
(Note: in endless form, the D6 and D7 design seals can be used in both open-ended housings and those with retaining plates. In OSJ® form, the seals are used in housings with retaining plates.)
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