This 5" x 1-1/4" Composite Polymer Thermoplastic Rubber Swivel Caster (TPR) features a shock-absorbing cushioned ride, while providing good floor protection and quiet rolling operation. Featuring a weight capacity of 275 lbs., the 75 Shore A TPR wheel tread is chemically bonded to a polyolefin core and has an operating temperature range of -40°to +180° Fahrenheit. It is resistant to cleaning chemicals, acids, alcohol, and water, TPR wheels are an excellent choice for wash-down applications.
For more info, check out Caster Wheel Types.