A key feature is the between the shaft and housing bore, which prevents premature seal failure.
Official, copyrighted PDF copies are typically sold through standards organizations rather than offered for free. You can find the full document on: Beuth Verlag (The official distributor for DIN). Standard aggregators like IHS Markit/S&P Global or advice on selecting a seal material for a specific project? din 3760 pdf
Some key features of DIN 3760 radial shaft seals include: A key feature is the between the shaft