Oil Seal 16.535x 18.504x 0.787 Inch Rubber ID 16.535 OD 18.504 bearing 20x42x8 💡 Why use Si3N4 ceramic

💡 Why use Si3N4 ceramic ball bearings instead of steel

✅ Insert bearing: UC207-20

High-precision thrust needle bearing 30x47x2 mm

Equivalents: RLS7-2Z and RLS7Z Bearings

✔️ LM355270 NB 35mm Slide Bush Ball Bushing Linear Motion Bearing

Oil Seal 16.535x 18.504x 0.787 Inch Rubber ID 16.535 OD 18.504 bearing 20x42x8 💡 Why use Si3N4 ceramicThe TC420x470x20 In is is a double lip rotary shaft seal built to block out dirt and lock in grease or oil. Designed for a shaft diameter of 16. 535" Width 0. 787" For Bore Dia. 18. 504" Nitrile Rubber Lip Material. Item Sku : TC420x470x20 In Type : TC 16. 535"x 18. 504"x 0. 787" Inch Inner : 16. 535" Outer : 18. 504" Width : 0. 787" Size : 16. 535" x 18. 504" x 0. 787" Seal Material : Nitrile Butadiene Rubber Temperature Range : 40 to 248 F