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Yes there IS way to restore oils back into rubber that have evaporated over time. You’ll need:
- bottle isopropyl alcohol +90%
- small 4oz bottle Oil of Wintergreen (methyl salicylate)
- small bottle glycerin
- some empty glass jars (peanut butter, jam, etc)
Pour into glass jar:
1-part Oil of Wintergreen
1-part glycerin
3-parts alcohol
Stir well and drop in your rock-hard rubber part so it’s completely submerged. Screw jar lid on and let sit for 1-4 days depending upon hardness. Shake jar regularly if you see separation. Remove rubber and wipe off excess fluid. That’s it! Soft pliable rubber just like new!!!
Note: use nitrile gloves to handle. Large doses of methyl salycilate can be poisonous.
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