The Smith-Cooper 1/8 in. FPT x 1/8 in. FPT Stainless Steel 0.53 in. L Cap is a compact, dual-end sealing solution designed for tight spaces and small-diameter lines. Crafted from lead-free stainless steel, this cap delivers dependable performance where corrosion resistance and longevity matter most.
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Dual-end FPT threads—two 1/8 in. female pipe thread connections allow you to cap two ports or one dual-port manifold with a single, streamlined component.
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Lead-free stainless steel construction provides robust corrosion resistance in a variety of environments, from mechanical cabinets to process lines.
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Compact profile at 0.53 in. long, enabling installation in restricted spaces without adding bulk to the assembly.
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Pressure rating up to 300 psi ensures reliable sealing for routine fluid or gas lines used in maintenance and fabrication tasks.
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Reliable sealing when paired with appropriate thread sealant and proper tightening, helping minimize leaks in demanding setups.
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Lead-free compliance aligns with standards for safe material usage in many industrial applications.
Where this cap shines
Ideal for small-diameter systems, this cap excels in manifolds, blocks, instrumentation panels, and compact hydraulic or pneumatic circuits where two ports need to be sealed quickly and securely. It’s a practical choice for workshops, manufacturing, automotive work, and lab environments that demand dependable, corrosion-resistant hardware.
How to use and install
- Confirm that both ports are 1/8 in. FPT male threads before installation.
- Clean the threads and apply an appropriate thread sealant or PTFE tape to the male threads for a leak-free seal.
- Thread the cap by hand to avoid cross-threading, then snug with a wrench—do not overtighten to protect the female threads.
- For ongoing systems, periodically inspect seals and replace if any signs of wear or leakage appear.
Specifications at a glance
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Product type: Cap
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Material: Stainless steel
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End 1 diameter: 1/8 in. (FPT)
End 2 diameter: 1/8 in. (FPT) -
Length: 0.53 in.
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Maximum pressure: 300 psi
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Lead content: Lead-free
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Packaging: Bagged
With its lead-free stainless steel composition and dual-end 1/8 in. FPT threading, this cap from Smith-Cooper is a precise, durable choice for sealing two 1/8 in. ports in compact assemblies. It’s a dependable, long-lasting option when you need to protect delicate lines from contamination and maintain system integrity in demanding environments.
