Grease on under-sink shutoff?

Old 03-03-18, 12:14 PM
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Grease on under-sink shutoff?

While under my kitchen sink for unrelated business, I noticed this dark brown goop on both the hot and cold shut-off valves for the faucet. It has the consistency of a thick grease. Is it actually grease, for some purpose? Or should I be concerned? (I didn't install this, and I never really paid close attention so I don't know if it's been there since the sink was installed, or if it has shown up recently). Thanks in advance!
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Old 03-03-18, 12:24 PM
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Its the packing material inside the valve, nothing to worry about!

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