{"product_id":"pu-pneumatic-straight-push-in-fitting-pu4-pu6-pu8-pu10-pu12-air-hose","title":"PU Pneumatic Straight Push-In Fitting — PU4 PU6 PU8 PU10 PU12, 4–12mm Air Hose Tube","description":"\u003ch2\u003ePU Pneumatic Straight Push-In Fitting — PU4 \/ PU6 \/ PU8 \/ PU10 \/ PU12\u003c\/h2\u003e\n\u003cp\u003eThese \u003cstrong\u003ePU pneumatic straight push-in fittings\u003c\/strong\u003e provide a fast, tool-free connection for polyurethane (PU) and nylon air hose tubing in pneumatic systems. Simply push the tube into the fitting until it clicks — the internal collet grips the tube securely and the O-ring seals the connection. Available in five sizes to cover the most common PU tube outer diameters from 4mm to 12mm.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFitting Type\u003c\/td\u003e\n\u003ctd\u003eStraight push-in (one-touch)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompatible Tube OD\u003c\/td\u003e\n\u003ctd\u003ePU4 (4mm) \/ PU6 (6mm) \/ PU8 (8mm) \/ PU10 (10mm) \/ PU12 (12mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePlastic body + stainless steel collet + NBR O-ring\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompatible Tube Types\u003c\/td\u003e\n\u003ctd\u003ePU (polyurethane), PA (nylon), PE tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMax Working Pressure\u003c\/td\u003e\n\u003ctd\u003eTypically 0.8–1.0 MPa (check variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eConnection Method\u003c\/td\u003e\n\u003ctd\u003ePush-in, tool-free; pull collar to release\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eCN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhy Choose Push-In Fittings?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool-free installation\u003c\/strong\u003e — Push tube in to connect; pull the release collar back and pull tube to disconnect — no wrenches or thread tape needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecure collet grip\u003c\/strong\u003e — Stainless steel collet teeth bite into the tube OD under pressure, preventing pull-out even at high flow rates\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNBR O-ring seal\u003c\/strong\u003e — Provides an airtight seal compatible with compressed air and inert gas applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5 sizes available\u003c\/strong\u003e — PU4 through PU12 covers the full range of standard PU tube sizes used in pneumatic automation and workshop equipment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReusable\u003c\/strong\u003e — Connect and disconnect repeatedly without degrading the seal or collet performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAir compressor hose connections in workshop and industrial settings\u003c\/li\u003e\n  \u003cli\u003ePneumatic cylinder and valve manifold tubing connections\u003c\/li\u003e\n  \u003cli\u003eCNC router and laser cutter air assist line connections\u003c\/li\u003e\n  \u003cli\u003e3D printer pneumatic extruder (Bowden tube) fittings (PU4)\u003c\/li\u003e\n  \u003cli\u003eAquarium and hydroponic air line connections\u003c\/li\u003e\n  \u003cli\u003eVacuum system tubing connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eQ: How do I release the tube from the fitting?\u003c\/h3\u003e\n\u003cp\u003eDepressurize the line first, then push the release collar (the outer ring) toward the fitting body while simultaneously pulling the tube out. Do not pull the tube without pressing the release collar — this may damage the collet teeth.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Can I use these with silicone tubing?\u003c\/h3\u003e\n\u003cp\u003ePush-in fittings are designed for semi-rigid tubing (PU, PA, PE). Soft silicone tubing does not have sufficient wall rigidity for the collet to grip reliably. Use barb fittings with hose clamps for silicone tubing.\u003c\/p\u003e\n\n\u003ch3\u003eQ: What is the maximum pressure rating?\u003c\/h3\u003e\n\u003cp\u003eTypical working pressure is 0.8–1.0 MPa (8–10 bar \/ 116–145 PSI) for standard PU tube. Always verify the pressure rating of both the fitting and the tube before use in high-pressure applications.\u003c\/p\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBoxed quantity of PU pneumatic straight push-in fittings (size and quantity per selected variant)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"A kit (23pcs) \/ 1 BOX","offer_id":47798670819563,"sku":"14:201441572#A kit (23pcs);183:202360806#1 BOX","price":25.62,"currency_code":"USD","in_stock":true},{"title":"D kit (80pcs) \/ 1 BOX","offer_id":47798670852331,"sku":"14:193#D kit (80pcs);183:202360806#1 BOX","price":91.92,"currency_code":"USD","in_stock":true},{"title":"B kit (60pcs) \/ 1 BOX","offer_id":47798670885099,"sku":"14:10#B kit (60pcs);183:202360806#1 BOX","price":78.57,"currency_code":"USD","in_stock":true},{"title":"C kit (100pcs) \/ 1 BOX","offer_id":47798670917867,"sku":"14:173#C kit (100pcs);183:202360806#1 BOX","price":93.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/boxed-pu-pneumatic-fitting-main.webp?v=1771057713","url":"https:\/\/keszoox.com\/products\/pu-pneumatic-straight-push-in-fitting-pu4-pu6-pu8-pu10-pu12-air-hose","provider":"Keszoox","version":"1.0","type":"link"}