Our BSPT (British Standard Pipe Tapered) Plug Adapters are commonly used fittings that feature a tapered thread design, ensuring a secure, leak-free connection in fluid power systems. BSPT adapters are compatible with both BSPP (British Standard Pipe Parallel) and BSPT female ports, offering versatility for various applications. The BSPT threads form a tight, durable seal through metal-to-metal contact, or a combination of metal-to-metal and O-ring sealing, depending on the configuration. These adapters are designed with a tapered thread ("R" designation), with sizes expressed as fractional dimensions, such as BSPT 1/4-19, for example, designated as R 1/4. Thread sealant is often recommended to ensure a secure, leak-free connection. BSPT plug adapters are ideal for sealing unused ports in systems under pressure or during maintenance, providing reliable, long-lasting performance in a variety of industrial and fluid power applications.