... proof seal system, precision bearing house, bearing of choice, precision cold-drawn shaft. All above make GH rollers as your reliable ... . We would use different greast for hot wet invirment and cold dry invirment. Any way, we suppliy onlt only reliable conveyor ... 2600mmm6204,6304, 6205, 6305,6306,6307, 6308,6309,6310 Conveyer Frame