The new MR33 o-ring grease is the perfect answer for the serious racer looking to get the most performance out of the car! With it's superior ability to reduce sliding friction, your shocks will feel smoother than ever! Perfect for use on diff o-rings and seals to provide long lasting smooth operation and helps prevent leaking! The grease also stops the o-rings from changing its size and hardness due to the contact with the silicone oil. A huge benefit for every racer!