... roller Used in mining,cement,steel,harbor,etc. Standard:ISO,CEMA,DIN,JIS, etc Certificate:CE, ISO, BV, SGS, etc Detailed conveyor roller ... : Grease retaining inner seal with Multi-stage Labyrinth and Retention Cap with Outboard Rubbing Flinger Seal.7. Lubrication ... spraying painting, baked paintingThe pictures: 2012 now type good quality conveyor rubber coated roller idler, ball bearing roller idler