{"product_id":"duotight-8mm-5-16-female-x-ffl-female-thread-to-fit-mfl-disconnects","title":"duotight – 8mm (5\/16”) Female x FFL Female Thread (to fit MFL Disconnects)","description":"\u003cp\u003e\u003cstrong\u003eGeneration 2 duotight\u003cbr\u003e\u003c\/strong\u003e- Colour Coded Collets (\u003cstrong\u003e\u003cspan\u003e6.35mm [1\/4\"] = Green\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e~ 8mm [5\/16] = Black ~\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e9.5mm [3\/8] = Blue\u003c\/span\u003e\u003c\/strong\u003e)\u003cbr\u003e-\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eBurst pressure is over 300psi @ 25°C\u003c\/span\u003e\u003cbr\u003e- Material Polyketone (POK) no longer Acetal (like John Guest Fittings)\u003cbr\u003e- Higher Chemical \u0026amp; UV Resistance\u003cbr\u003e- Excellent Gas Barrier Properties with EPDM + Silicone Seals\u003cbr\u003e- Superior Performance in Cold Temperatures\u003cbr\u003e- Easier to fit with Gauge depth indicators\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u0026gt;|    |\u0026lt;\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eNot compatible with 6mm ID x 10mm OD line\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe thread on this fitting will suit:\u003c\/strong\u003e\u003cbr\u003eMFL Threaded Ball Lock and Pin Lock Disconnects\u003cbr\u003eMK3 \u0026amp; MK4 Regulators\u003cbr\u003eMany other home brew fittings with MFL Thread\u003cbr\u003e\u003cem\u003ePlease note it does not suit the MK5 Regulator\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eLooking for high quality push in fittings that will seal tight?  duotight are the push in fitting with superior sealing capacity due to the double o-ring sealing design.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do we use Double O-rings?\u003c\/strong\u003e\u003cbr\u003eThe secret to our superior sealing performance is not just the fact that we use high quality EPDM and a Silicone O-Ring.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eWhy two different materials?\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eEPDM has a high gas and chemical resistance, but when chilled it can shrink slightly. Silicone O-Rings are also very chemical resistant but perform far better under sub-zero conditions not losing their shape.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBy having the best of both worlds we're making sure there is twice as much sealing surface compared to other push in fittings on the market with just one.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThis makes our fittings even more reliable across a multitude of applications and reduces the chance of a leak significantly.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe double o-ring system also means that we can bend the hose with much tighter radius without causing leaking issues.  This typically can be an issue with other fittings.  This combination of factors makes duotight fittings the most reliable push fit fittings on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNo clamps necessary! \u003c\/strong\u003e\u003cbr\u003eWe do recommend cutting your hosing straight, not on an angle, to ensure the line has a complete seal. To remove the fitting simply push in the collet and the hose can be removed.\u003c\/p\u003e","brand":"Top Brew","offers":[{"title":"Default Title","offer_id":42231286530133,"sku":"9300000001226","price":4.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0569\/8830\/3445\/files\/Screenshot2026-03-12131201.png?v=1773285253","url":"https:\/\/topbrew.com.au\/products\/duotight-8mm-5-16-female-x-ffl-female-thread-to-fit-mfl-disconnects","provider":"Top Brew","version":"1.0","type":"link"}