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Do you need pipe dope to connect brass copper pipe?

Pipe dope, also known as pipe sealant or pipe joint compound, is a sealant used in threaded pipe joints to improve the seal and prevent leaks. It is typically used on metal pipe joints, such as those made of brass, copper, or galvanized steel.

When applied to the threads of a pipe, pipe dope helps to fill any small gaps or irregularities in the threads, creating a tighter seal. It also acts as a lubricant, making it easier to assemble and disassemble pipe joints. Additionally, pipe dope can help to prevent corrosion and prolong the life of the joint.

Pipe dope is typically applied to the male threads of a pipe joint, and then the joint is assembled and tightened. It is important to apply the correct amount of pipe dope, as too much can prevent the joint from being properly tightened and can lead to leaks.

In some cases, pipe dope may not be necessary or recommended. For example, some types of pipe fittings, such as compression fittings or flare fittings, do not require the use of pipe dope. Additionally, some types of pipe materials, such as PVC or CPVC, may not be compatible with certain types of pipe dope.

Overall, pipe dope is a useful tool for creating tight, leak-proof seals in threaded pipe joints, particularly for metal pipes such as brass, copper, or galvanized steel. However, it is important to use it correctly and follow the manufacturer's instructions for the specific type of pipe and fittings being used.