Putkiseosta

Putkiseosta is a Finnish term that broadly refers to pipe sealing compounds or pipe joint compounds. These substances are used in plumbing and construction to create watertight seals between sections of pipe, particularly at threaded connections. The primary function of putkiseosta is to fill any small gaps or imperfections in the threads, preventing leaks when the pipes are assembled and pressurized.

The composition of putkiseosta can vary. Some common types are paste-like and contain fillers such as PTFE (polytetrafluoroethylene), graphite, or other inert materials suspended in a binder. These binders can be oil-based, water-based, or solvent-based, influencing the drying time and flexibility of the seal. For applications involving potable water, it is crucial to use putkiseosta that is certified as safe for drinking water systems, meaning it does not leach harmful chemicals.

Application typically involves applying a thin, even layer of the compound to the male threads before screwing the pipes together. As the threads are tightened, the putkiseosta is squeezed into the gaps, creating a seal. The compound may harden over time, providing a rigid seal, or remain somewhat pliable, allowing for minor adjustments or accommodating vibrations. Different formulations are designed for various pipe materials, including metal (such as galvanized steel or copper) and plastic (like PVC or ABS), and for different operating conditions, such as temperature and pressure.