6"X 2" Blue Solid Polyurethane Wheel | Rigid Caster | 900 lbs Capacity Caster HQ's Blue Solid Polyurethane Elastomer wheel offers high weight capacities and great resistance to chemicals and wash down applications. Our Blue Solid Poly Wheels are great for Steam Clean and full Wash-down applications while providing great floor protection and a quiet rolling operation. This wheel is great for clean rooms, labs, hospitals, and schools due to the non-marking high quality polyurethane material. Optional precision ball bearings require less effort to start up and maintain a rolling load; they also generate less friction heat and may prolong the life of the wheel. Works well in both indoor and outdoor environments; however solid polyurethane wheels may flat spot if they are left with a maximum load for long periods of time; if this is an issue look at using aluminum, iron, or plastic core wheels. PERFECTLY MOLDED AND MACHINED FOR HIGH PERFORMANCE NO TREAD SEPERATION, RUSTING, WATER ABSORPTION OR FLOOR-MARKING RESISTANT TO MOST CHEMICALS, OILS, ACIDS, GREASES, AND OTHER ICKY STUFF EXCELLENT FOR WASH-DOWN APPLICATIONS INVOLVING WATER TEMPERATURE RANGE: -40F TO + 180F DUROMETER: 60 SHORE D (+/-5) BEARINGS: CHOOSE FROM DELRIN, ROLLER, OR PRECISION WEIGHT CAPACITY: 900 LBS PER CASTER