Alaska Rubbers Pvt. Ltd. Offers Urethane made Heavy Duty Elevator Bucket. Alaska Rubbers Pvt. Ltd. Is an ISO 9001 accredited company. The Urethane made Heavy Duty Elevator Bucket is designed with thicker walls and a reinforced front lip to increase bucket life and reduce breakage. The Urethane made Heavy Duty Elevator Bucket is used for keeping grain, fertilizer, pellets, corn, wheat, soybeans and other agricultural applications.