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The TC12x21x4 is a double-lip rotary shaft seal
✅ Applications: Inline skates
Double lip seals add a second sealing surface to better hold in grease or oil while blocking out dust
BA66ZOH Ball Bearing
They deliver strong performance where other bearings won’t fit
NBK Japan MJC-30-GR 6mm to 8mm Jaw-type Flexible Coupling Inner Diameter - 5 inch (5") The TC12x21x4 is a double-lipNBK Japan MJC 30 GR 6mm to 8mm Jaw type Flexible Coupling NBK Japan MJC 30 GR 6mm to 8mm Jaw type Flexible Coupling NBK Japan MJC 30 GR 6mm to 8mm Jaw type Flexible Coupling, this is a Jaw type flexible coupling. The bellows allows eccentricity, angularmisalignment, and end play. Coupling Bore 1 Diameter: 6mm Coupling Bore 2 Diameter: 8mm Coupling Length: 35 Coupling Outer Diameter: 30 Material: Stainless This is a jaw type flexible coupling. Tight
