... chemicals of any thermoplastics polymer. The sealing of Dunone Roller are also creative and effective, they constitute of labyrinth ... testing are available.The more relaxed payment termsDetailed conveyor roller idler feature:1,Abrasion resistance and long life. ... retainer4,Light weight and energy saving.5,Redused belt damage,Noise reduction,Corrosion resistance,No sticking. conveyor belt guide roller