Is it medically safe to keep a Chernobyl clean up medal?

How to clean skateboard bearings? read please!?

• Keep your bearings dirt-free, moisture free, and lubricated. Water will rust your bearings and dirt will destroy the smoothness of the super finish on your bearing races, increasing friction. Clean your bearings when they become dirty or noisy with the most environmentally friendly cleaner you can find that is suitable for dissolving oil, grease, and removing dirt from the steel, plastic and rubber surfaces. We have tried many cleaners and solvents and many of them can be used safely. Citrus based cleaners can work, but they tend to leave behind a slight residue. Solvents are dangerous to use, but often provide a superior solution to cleaning very dirty bearings. If you use a water based cleaner like a citrus cleaner or a detergent, be sure to dry your bearings IMMEDIATELY and then re-coat them with lubricant to prevent rust. Some solvents/commercial products that we have used are: pure, or almost pure, isopropyl alcohol (The kind normally found in markets is only 10% pure and does not cut grease well.); Gumout® carburetor cleaner (found in auto parts stores); acetone (found in hardware stores). If you can’t find any of these solvents like acetone or pure alcohol, you can use paint thinner or lacquer thinner, but these cleaners are oil based and may leave an oily residue on the inner surfaces of your bearings. If you use a solvent cleaner, please wear appropriate rubber gloves and work in a safe well ventilated area. When you are finished, please remember to dispose of your solvent in a safe, ecologically sound manner. Do not add oil to dirty bearings. It will not clean the bearing, but merely flush the existing dirt further into the bearing. It may seem like they roll faster initially, but in reality you are only spreading the dirt around, and it will still be there to ruin the high precision rolling surfaces of your bearings. Clean your bearings before re-lubricating them. Cleaning InstructionsGently remove the non-contact rubber shield with a push pin or the edge of a small knife by prying the shield upwards from under the shield at the inner race. It should pop up and out quite easily, so handle them gently and don’t bend them or cut the seal. If you have the labyrinth shield bearings, make sure to remove both of them. Be careful not to bend or tear the shield as you remove them. Bent shields don’t fit right and may allow contaminants into the bearing. Don’t use solvents to clean the rubber shields! Doing so may cause the rubber to blister or swell from the solvents. Just wipe the rubber shields down with warm soapy water and a lint free cloth. Make sure the shields are completely clean and dry before re-installing. Optional Cage Removal: You can clean your bearings more thoroughly by removing the ball retainer or “cage.” We only recommend this if you are using the Bones Bearing Cleaning Unit or are an experienced bearing cleaner. To remove the ball retainer, take a straightened paper clip or similar object and place it in the spaces between the ball seats, then push the ball retainer out. Pushing alternatively in several different spots is often helpful. We recommend ONLY pushing the retainers out. If you pry them out, you will damage the ball cavities, ruining the surface of

• Answer:

  Nice of you to cut and paste the instructions from Bones' website.