Between the faucet base and the sink, which material is used to seal leaks?

Between the faucet base and the sink, which material is used to seal leaks?

• A. Teflon tape
• B. Silicone caulk
• C. Epoxy
• D. Plumbers putty

Answer: (D)

Between the faucet base and the sink, you need a seal that stays flexible, is water-resistant, and can be removed later if the faucet needs service. Plumbers putty fits that role well. It’s a soft, moldable material you press around the faucet shank under the base to fill gaps and prevent leaks into the cabinet. It seals effectively today and can be cleaned up or replaced easily when needed. Teflon tape is intended for threaded pipe joints, not for sealing the flat area between the faucet and the sink, so it won’t provide a proper seal here. Silicone caulk can seal well, but once it cures it becomes rigid and harder to remove for future faucet work. Epoxy creates a hard, permanent bond, which isn’t suitable when you may need to disassemble the faucet later.

Between the faucet base and the sink, you need a seal that stays flexible, is water-resistant, and can be removed later if the faucet needs service. Plumbers putty fits that role well. It’s a soft, moldable material you press around the faucet shank under the base to fill gaps and prevent leaks into the cabinet. It seals effectively today and can be cleaned up or replaced easily when needed. Teflon tape is intended for threaded pipe joints, not for sealing the flat area between the faucet and the sink, so it won’t provide a proper seal here. Silicone caulk can seal well, but once it cures it becomes rigid and harder to remove for future faucet work. Epoxy creates a hard, permanent bond, which isn’t suitable when you may need to disassemble the faucet later.