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SAE 841—also called Oilite®, this bushing starts as powdered metal and is then sintered and impregnated with roughly 19% SAE 30 oil. forming, sintering and sizing, the bearings are vacuum impregnated with SAE 30 oil that provides lubricant which is metered from the bearing to the shaft during rotation. The oil reduces wear as well as providing lubricant. 
Standard SAE 841 sleeve bearings or SAE 841 flanged sleeves bearings are oil impregnated bronze should function satisfactorily in temperatures ranging from 10°F to 220°F. Consult Rainbow Precision if application requires higher temperatures or other specific operating conditions.  Request a special quote for larger quanities requirements. If you don't see your size please Contact Us.