Service Caster Rubber Raceway Seal for Series 30 Swivel Top Plate Casters - Fits 4" x 4-1/2" Overall Top Plate.
Rubber seals to protect swivel caster raceways and ball bearings from debris. Designed for a 4" x 4-1/2" plate. Operating temperature range: 32 degrees F to 140 degrees F.
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