These seals are made out of a nitrile rubber compound to make for better sealing and compatibility with synthetic oils. Their design has a beaded rubber outside diameter to prevent spring back during assembly and for better overall sealing, and a secondary dust lip keeps out contaminants. They come in ISO 6194 and DIN 3760 dimensions up to 250 mm shaft sizes, and they work in -40 to 212F (-40 to 100C) temperature ranges. They are built for industrial applications such as gearboxes containing grease or synthetic oil lubricants. SKFhttp://rbi.ims.ca/4928-607
Sales of semiconductors, interconnects, and other electronic components in North America were flat through the second quarter of 2015, reflecting a pattern that’s been repeating itself for several years.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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