BSP 304 Stainless Steel Pipe End Cap and Plug — 1/8" to 2" Female Cap & Male Plug

Match the fitting size to your pipe's nominal BSP thread size. For example, a 1/2" BSP pipe requires a 1/2" cap or plug. Measure the outer diameter of the male thread or the inner diameter of the female port, then cross-reference with standard BSP sizing charts. When in doubt, size up — a slightly larger fitting can sometimes be adapted, but an undersized one will not seal.

A female end cap threads onto the outside of a male BSP pipe end, covering and sealing it. A male plug threads into a female BSP port or socket to block it off. Choose the cap when you need to seal an exposed male pipe end, and choose the plug when you need to close off an open female port.

304 stainless steel generally offers a tensile strength of around 515 MPa (75,000 psi). These fittings are typically rated for working pressures found in standard plumbing and low-to-medium pressure hydraulic systems. For high-pressure applications, confirm the specific pressure rating with us before ordering.

Yes. 304 stainless steel is corrosion-resistant and performs well in most outdoor and wet environments. It resists rust and oxidation under typical atmospheric and freshwater conditions. For marine or highly chlorinated environments, 316 stainless steel is generally recommended for superior salt resistance.

Yes, these fittings use BSP (British Standard Pipe) threads, which are widely used in the UK, Australia, Asia, and many other regions. BSP threads are not directly compatible with NPT (National Pipe Thread) used in North America without an adapter. Always confirm your existing pipe thread standard before ordering.

For BSPT (tapered) threads, applying PTFE tape or thread sealant compound is generally recommended to ensure a leak-free seal. For BSPP (parallel) threads, a bonded seal or O-ring is typically used at the face rather than on the threads. Check your pipe system's thread type and follow the appropriate sealing method.

304 stainless steel BSP plugs and caps are generally suitable for water, air, oil, and many non-corrosive gases. They are commonly used in plumbing, pneumatic, and hydraulic systems. For aggressive chemicals, acids, or high-chloride environments, contact us to confirm compatibility before use.