clear silicone sealant won't cure

Old 12-26-10, 12:59 PM
Thread Starter
Join Date: Dec 2010
Location: Canada
Posts: 1
Upvotes: 0
Received 0 Upvotes on 0 Posts
Question clear silicone sealant won't cure

I recently replaced my kitchen faucet and used clear silicone sealant around the base to keep water from seeping underneath.

It was supposed to cure completely in 24 hours. That was almost two weeks ago!

This tube of sealant has been sitting in my basement for over five years. This has never happened with it in the past.

Has this happened to anyone else?

I'll have to replace the sealant. Should I just scrape it off with my fingernail and then wipe with rubbing alcohol? (I don't want to scratch the surfaces with razor blades and putty knives.)

Old 12-26-10, 01:37 PM
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 45,728
Received 854 Upvotes on 748 Posts
Silicone caulking isn't supposed to dry rock hard, it stays pliable and flexible so it can continue to work as intended. I suspect you applied too much caulk. Some solvent, a rag and maybe a plastic putty knife should help you to remove the excess. If you need to use a steel putty knife - wrap a rag around it so it won't scratch the sink/faucet.
Old 12-26-10, 03:08 PM
Join Date: Oct 2006
Location: Wilmington
Posts: 3,994
Upvotes: 0
Received 0 Upvotes on 0 Posts
Silicone should dry to the touch in less than 1 hr. If it still comes off on your finger, it is no good. Take everything apart, thoroughly clean, and start over. But silicone is not the thing to use on a faucet gasket. Use plumbers putty for things like that.
Old 12-26-10, 04:25 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Posts: 27,198
Received 1,947 Upvotes on 1,747 Posts
Why put anything under a faucet gasket? Rubber gaskets are self-sealing. Or is this a hard plastic gasket?
Old 12-27-10, 05:36 AM
Group Moderator
Join Date: Oct 2004
Location: WI/MN
Posts: 19,163
Received 1,273 Upvotes on 1,213 Posts
If the tube is really five years old, it could be too old, I'd buy a new tube and redo the job

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: