Alaska Rubbers Pvt. Ltd. Manufactures Urethane made Maximum Duty Elevator Bucket. Alaska Rubbers Pvt. Ltd. Is an ISO 9001 certified company. The Urethane made Maximum Duty Elevator Bucket is designed and engineered to increase bucket life and reduce breakage. The most common applications of Urethane made Maximum Duty Elevator Bucket include grain, fertilizers, pellets, corn, wheat, soybeans and other agricultural and light industrial applications.