From the Velorama museum in Nijmegen. Circa 1899.
There's some mixed terminology in this article. While solid lubricant is more resistant to leakage and contamination, it still benefits greatly from conventional bearing seals.
Sept. 13, 2018, 8:02 a.m. - Alex D
 From the Velorama museum in Nijmegen. Circa 1899. There's some mixed terminology in this article. While solid lubricant is more resistant to leakage and contamination, it still benefits greatly from conventional bearing seals.