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

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

Name: Stainless Steel 304 BSP Pipe Plug & End Cap — Male Plug / Female Cap, 1/2" to 1"
Brand: HomeDIYer
Price: 3.33 USD
Availability: InStock

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Size (BSP): 1&2" Male Plug

Amount: 1 pcs

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$3.33 USD

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In stock (500 units), ready to be shipped

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SS304 BSP Pipe Plug & End Cap — Seal Open Pipe Ends with a Threaded Stainless Steel Fitting

An unsealed pipe port is a liability — it invites contamination, leaks pressure, and creates a maintenance headache down the line. Plumbers, pipefitters, and facility engineers working with BSP threaded systems need a reliable way to cap off unused ports, isolate sections of pipe, or temporarily seal a line during testing. These stainless steel 304 BSP pipe plugs and end caps are the straightforward solution: thread them in, torque them down, and the port is sealed.

Available in two fitting styles — Male Plug (external BSP threads, screws into a female-threaded socket or port) and Female Cap (internal BSP threads, fits over a male-threaded pipe end) — in three sizes: BSP 1/2" (DN15), BSP 3/4" (DN20), and BSP 1" (DN25). All fittings are machined from 304 stainless steel for durability in wet and mildly corrosive service. Sold individually (1 pcs per order).

Typical applications include sealing unused outlets on manifolds, tees, and valve bodies; capping off pipe ends during pressure testing of water supply or compressed air systems; and permanently closing redundant ports in industrial fluid transfer or HVAC pipework where BSP threaded fittings are the standard.

🔗 Thread Compatibility: BSP (British Standard Pipe) — BSPP (parallel, G-series) or BSPT (tapered, R-series). Not interchangeable with NPT threads. Select Male Plug to seal a female port; select Female Cap to cover a male pipe end.

✅ Key Features of These SS304 BSP Pipe Plugs & End Caps

🔌 Two Sealing Styles in One Listing — Male Plug (external BSP thread) and Female Cap (internal BSP thread) variants let you seal either a female port or a male pipe end without sourcing from two separate suppliers.
🛡️ 304 Stainless Steel — Rust-Resistant in Wet Service — Machined from SS304 for reliable corrosion resistance in water, air, and mild chemical environments, outlasting carbon steel or brass plugs in damp or outdoor installations.
📏 Three Common BSP Sizes: 1/2", 3/4", 1" — Covers the most frequently used nominal bore sizes in residential plumbing, commercial HVAC, and light industrial BSP pipe systems, reducing the need to stock multiple SKUs.
⚙️ Machined BSP Thread Accuracy — Threads are machined to BSP standard tolerances for consistent, full engagement with mating fittings — reducing the risk of cross-threading, incomplete seating, or slow leaks at the sealed port.
🌡️ Suitable for Water, Air, Steam & Mild Chemicals — SS304 BSP end caps and plugs are generally rated for a broad range of media including potable water, compressed air, low-pressure steam, and non-aggressive process fluids.
🚚 Ships from US Warehouse — In-stock inventory supports fast delivery for MRO buyers, contractors, and maintenance teams who need BSP pipe plugs or end caps without waiting on overseas lead times.

📐 Technical Specifications — BSP Pipe Plug & End Cap

Product Type	BSP Pipe Plug (Male) & End Cap (Female)
Material	Stainless Steel 304 (SS304)
Thread Standard	BSP (British Standard Pipe) — BSPP or BSPT; confirm variant
Available Sizes	BSP 1/2" (DN15), BSP 3/4" (DN20), BSP 1" (DN25)
Fitting Styles	Male Plug (external thread) / Female Cap (internal thread)
Connection Type	Male Plug: screws into female-threaded port; Female Cap: fits over male-threaded pipe end
Pressure Rating	See variant options — contact us to confirm for your size and application
Temperature Range	Contact us to confirm for your specific media and size
Surface Finish	Natural stainless steel (mill/machined finish)
Quantity per Order	1 pcs (single piece)
Compatible Media	Water, air, steam, oils, mild chemicals (confirm for aggressive media)
Standards	BSP thread per ISO 228 (BSPP) / ISO 7 (BSPT)

⚠️ Sizing Note: BSP sizes refer to nominal pipe bore, not the physical thread outer diameter. BSP 1/2" (DN15) thread OD ≈ 20.96 mm (≈0.825"); BSP 3/4" (DN20) ≈ 26.44 mm (≈1.041"); BSP 1" (DN25) ≈ 33.25 mm (≈1.309"). Measure your port or pipe thread OD and cross-reference a BSP thread chart if unsure.

❓ Frequently Asked Questions

What is the difference between a BSP male plug and a female end cap?

A BSP male plug has external (male) threads and screws into a female-threaded socket, tee, or valve port to seal it. A BSP female end cap has internal (female) threads and fits over a male-threaded pipe end to cap it off. Choose based on the thread type of the port or pipe end you need to seal — if it's a female port, use a male plug; if it's a male pipe end, use a female cap.

How do I choose the right BSP plug or cap size?

Match the size to the nominal BSP thread designation of the port or pipe end you are sealing — not the physical outer diameter. Reference thread ODs: BSP 1/2" (DN15) ≈ 20.96 mm (≈0.825"); BSP 3/4" (DN20) ≈ 26.44 mm (≈1.041"); BSP 1" (DN25) ≈ 33.25 mm (≈1.309"). When in doubt, measure the thread OD and cross-reference a BSP thread dimension chart.

What pressure can these BSP plugs and caps typically handle?

SS304 BSP plugs and end caps generally handle working pressures in the range of 150–2000 PSI depending on size and wall thickness. Smaller sizes typically carry higher pressure ratings. Contact us to confirm the rated pressure for your specific size and application before use in high-pressure systems.

Are these fittings suitable for outdoor or corrosive environments?

Yes. 304 stainless steel offers good corrosion resistance in most outdoor, humid, and mildly corrosive environments including water and air service. For marine, saltwater, or high-chloride environments, 316 stainless steel is generally recommended instead. Contact us if you need 316 SS options.

Do BSP threads work with NPT fittings?

No. BSP (British Standard Pipe) and NPT (National Pipe Taper) threads are not interchangeable. BSP uses a 55° thread angle while NPT uses 60°, and their pitch and OD dimensions differ across sizes. Always confirm your pipe or port thread standard before ordering to avoid mismatched threads and potential leaks.

Do I need PTFE tape or thread sealant with these plugs and caps?

For BSPT (tapered) threads, PTFE tape or a thread sealant compound is generally recommended to achieve a leak-free seal. For BSPP (parallel) threads, a bonded seal washer or O-ring face seal is typically used instead of tape. Check your fitting type and application requirements before assembly.

What fluids or media are these fittings compatible with?

SS304 BSP plugs and end caps are generally compatible with water, compressed air, low-pressure steam, oils, and many mild chemicals. They are not recommended for strong acids, high-concentration chlorides, or highly alkaline solutions. Always confirm media compatibility with your specific operating conditions before installation.

🛒 Select your size and style above, then add to cart — ships from our US warehouse.

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

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SS304 BSP Pipe Plug & End Cap — Seal Open Pipe Ends with a Threaded Stainless Steel Fitting

✅ Key Features of These SS304 BSP Pipe Plugs & End Caps

📐 Technical Specifications — BSP Pipe Plug & End Cap

❓ Frequently Asked Questions

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

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