Not only are they resistant to water, oil, and grease, but because they are non-metallic, these wheels are spark proof, keeping you safely moving forward.
Combination seal/thrust retainer washers protect the bearing from dirt, water, and chemicals. Listing is for a set of four (4) Service Caster Series #20 casters, two (2) swivel 1/2" threaded stem with total lock brake casters and two (2) swivel casters, with 3” diameter by 1-1/4” wide high temperature phenolic wheels. The Service Caster Series #20 is ideal for bakery racks, light and medium duty material handling, carts, equipment, and shop projects. Supports a total weight of 1,200lbs (300lbs/per caster).