Jack's Magic® O-Ring Lube is a premium silicone lubricant (with PTFE) featuring a NEW brush-top applicator. O-Ring Lube has outstanding rubber & plastic compatibility and is chemical resistant. It’s odorless, non-toxic and safe for the environment. It will not harm or degrade o-rings, rubber gaskets or other rubber or plastic seals. Most importantly – the container size and applicator length means you’ll get to use every last bit you paid for! This product comes in 4oz. jars.