{"product_id":"smith-cooper-3-8-in-fpt-x-3-8-in-d-fpt-stainless-steel-cap","title":"Smith-Cooper 3\/8 in. FPT X 3\/8 in. D FPT Stainless Steel Cap","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Smith-Cooper 3\/8 in. FPT X 3\/8 in. D FPT Stainless Steel Cap — a rugged, lead-free solution designed to seal dual 3\/8\" ports with precision and lasting reliability. Crafted from corrosion-resistant stainless steel, this cap stands up to demanding environments, making it a smart choice for plumbing, hydraulic, and industrial applications where reliability matters.\u003c\/p\u003e \u003ch2\u003eWhy this dual-end cap stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDual 3\/8\" FPT ends\u003c\/strong\u003e provide streamlined closure for two ports with a single component, reducing part count and installation time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStainless steel construction\u003c\/strong\u003e delivers superior corrosion resistance and durability in demanding conditions, outperforming plated or softer metals over the life of the system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLead-free design\u003c\/strong\u003e supports safety and compliance in systems where lead content matters, including sensitive or potable-related environments, without sacrificing strength.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eService ratings\u003c\/strong\u003e include a maximum pressure of 300 psi and a maximum temperature of 300°F, making it suitable for a wide range of hydraulic, pneumatic, and general piping tasks.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBagged packaging\u003c\/strong\u003e ensures clean storage and easy handling on busy job sites.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStandards-compatible fit\u003c\/strong\u003e designed to mate with standard 3\/8\" male pipe threads, offering straightforward integration into existing assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical uses and ideal applications\u003c\/h2\u003e\n\u003cp\u003eThis cap is engineered for situations where two 3\/8\" ports must be safely sealed without a bulky assembly. Ideal buyers include maintenance technicians, field installers, OEM engineers, and DIY professionals working with hydraulic or plumbing lines. Use cases include:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eSealing unused or test ports on dual-port manifolds during commissioning or maintenance\u003c\/li\u003e \u003cli\u003eTemporary closures in hydraulic and pneumatic test rigs\u003c\/li\u003e \u003cli\u003eMaintenance-friendly port protection in equipment housed in humid or corrosive environments\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrong end diameter:\u003e 3\/8\" FPT\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong end diameter:\u003e 3\/8\" FPT\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong end type:\u003e FPT\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong end type:\u003e FPT\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong material:\u003e Stainless Steel\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong maximum pressure:\u003e 300 psi\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong maximum temperature:\u003e 300°F\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong packaging type:\u003e Bagged\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong product type:\u003e Cap\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong lead content:\u003e Lead-Free\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eInstallation guidance and best practices\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eEnsure mating ports have clean, undamaged threads before installation.\u003c\/li\u003e \u003cli\u003eUse appropriate sealant rated for stainless steel on male threads (e.g., PTFE tape or pipe thread sealant) to ensure a secure, leak-free seal.\u003c\/li\u003e \u003cli\u003eHand-tighten the cap onto each 3\/8\" male port, then apply a light final turn with a wrench. Avoid overtightening to prevent thread damage.\u003c\/li\u003e \u003cli\u003eInspect for leaks after initial system pressurization and re-tighten if necessary, following standard safety procedures.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe Smith-Cooper 3\/8 in. FPT X 3\/8 in. D FPT Stainless Steel Cap delivers dependable, dual-port sealing in a compact, corrosion-resistant package. Its lead-free composition, robust temperature and pressure ratings, and easy integration with standard 3\/8\" male threads make it a practical, long-lasting choice for professionals who demand precision and reliability from every connection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Smith-Cooper","offers":[{"title":"Default Title","offer_id":52176684286226,"sku":"4215208","price":6.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/4215208_A.eps_High.jpg?v=1775591181","url":"https:\/\/nationalhardwaregroup.com\/products\/smith-cooper-3-8-in-fpt-x-3-8-in-d-fpt-stainless-steel-cap","provider":"National Hardware Group","version":"1.0","type":"link"}