Plumber's putty and silicone are both sealants used in plumbing, but they have distinct differences in composition, application, and use cases.
Plumber's putty is a pliable, clay-like substance made from a combination of powdered clay and linseed oil or other oils. It is primarily used to create watertight seals around faucets, drains, and other plumbing fixtures. Plumber's putty is easy to manipulate and mold, making it ideal for filling gaps and creating seals in areas that require flexibility. It remains soft and pliable over time, which allows for easy removal and adjustments. However, it is not suitable for use in areas that will be exposed to constant water pressure or where a permanent seal is required, as it can degrade over time.
Silicone, on the other hand, is a rubber-like, synthetic polymer that cures to form a durable, flexible, and waterproof seal. It is available in various formulations, including clear and colored options, and is used for sealing joints, seams, and gaps in a wide range of applications, including plumbing, construction, and automotive. Silicone is highly resistant to temperature extremes, UV light, and moisture, making it suitable for both indoor and outdoor use. Once cured, silicone forms a strong, permanent bond that is difficult to remove, making it ideal for areas that require a long-lasting seal.
In summary, plumber's putty is best for temporary, flexible seals in non-pressurized areas, while silicone is suited for permanent, waterproof seals in both pressurized and non-pressurized environments.