{"product_id":"k-flex-pipe-insulation-lagging-glue-25-litre-k-420","title":"K-FLEX K-420 Contact Adhesive for Pipe Insulation 250ml","description":"\u003cp\u003e\u003cstrong\u003eK-FLEX K-420 is the correct contact adhesive for bonding K-FLEX pipe insulation on bends, tees, fittings and any joint where self-seal tape alone is not sufficient — completing the vapour barrier on every complex connection.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e✔ Designed specifically for K-FLEX elastomeric foam insulation\u003c\/li\u003e\n\u003cli\u003e✔ Essential for bends, tees and complex fittings\u003c\/li\u003e\n\u003cli\u003e✔ Completes the vapour barrier where tape cannot reach\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhen Do You Need K-420 Adhesive?\u003c\/h3\u003e\u003cp\u003eSelf-seal insulation and ST tape handle straight runs and simple joints — but bends, tees, reducers and complex fittings require a contact adhesive to achieve a continuous, airtight bond. K-420 is the manufacturer-recommended adhesive for all K-FLEX elastomeric foam insulation, ensuring full compatibility and a lasting seal on every part of the system.\u003c\/p\u003e\u003cp\u003eOn a typical AC installation, K-420 is used at every bend and fitting — a 250ml tin is sufficient for most single-unit domestic installations.\u003c\/p\u003e\u003ch3\u003eWhere This Is Used\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBonding insulation on pipe bends and elbows\u003c\/li\u003e\n\u003cli\u003eSealing tee junctions and reducers\u003c\/li\u003e\n\u003cli\u003eClosing longitudinal seams on non-self-seal K-FLEX insulation\u003c\/li\u003e\n\u003cli\u003eBonding insulation to fittings and valves\u003c\/li\u003e\n\u003cli\u003eAny joint requiring a permanent, airtight elastomeric bond\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eContact adhesive — apply to both surfaces, allow to tack, then press together\u003c\/li\u003e\n\u003cli\u003eSpecifically formulated for elastomeric foam insulation\u003c\/li\u003e\n\u003cli\u003eCompatible with all K-FLEX ST, SK and standard tube insulation\u003c\/li\u003e\n\u003cli\u003eFast-tack formula for efficient on-site use\u003c\/li\u003e\n\u003cli\u003e250ml tin — sufficient for a typical domestic AC installation\u003c\/li\u003e\n\u003cli\u003eSolvent-based — use in well-ventilated areas\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eK-FLEX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eK-420 Contact Adhesive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e850CL020039\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVolume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eContact adhesive (solvent-based)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eK-FLEX ST, SK, and standard elastomeric foam insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eItaly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eClean both surfaces to be bonded\u003c\/li\u003e\n\u003cli\u003eApply K-420 to both surfaces using a brush or spreader\u003c\/li\u003e\n\u003cli\u003eAllow to become touch-dry (approximately 5–10 minutes)\u003c\/li\u003e\n\u003cli\u003ePress surfaces firmly together — bond is immediate on contact\u003c\/li\u003e\n\u003cli\u003eUse in a well-ventilated area\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComplete Your Insulation System\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/kflex-st-sk-tube\"\u003eK-FLEX ST Self-Seal Pipe Insulation\u003c\/a\u003e — the primary insulation K-420 is designed to bond\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/anti-condensation-tape-k-flex-st-vapour-barrier\"\u003eK-FLEX ST Insulation Tape\u003c\/a\u003e — for sealing straight joints and cut ends\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/copper-pipe-1\"\u003eAC Copper Pipe\u003c\/a\u003e — refrigerant-grade pipework for AC systems\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/fittings-connectors\"\u003eFittings \u0026amp; Connectors\u003c\/a\u003e — refrigeration fittings requiring insulation finishing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eMost engineers use K-420 alongside \u003ca href=\"\/products\/kflex-st-sk-tube\"\u003eK-FLEX ST Self-Seal insulation\u003c\/a\u003e and \u003ca href=\"\/products\/anti-condensation-tape-k-flex-st-vapour-barrier\"\u003eK-FLEX ST tape\u003c\/a\u003e to complete a full, professional insulation system.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eAlso known as: insulation adhesive, pipe lagging glue, elastomeric foam adhesive, K-FLEX glue, insulation contact adhesive.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOrder K-FLEX K-420 contact adhesive today — available from UK stock with fast trade delivery.\u003c\/strong\u003e\u003c\/p\u003e","brand":"K-Flex","offers":[{"title":"Default","offer_id":57029823693177,"sku":"850CL020039","price":27.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/K-FLEX-K-420-Adhesive-Ryan-Air-Conditioning-Spares-68410676969847.webp?v=1777807367","url":"https:\/\/www.airconspares.com\/products\/k-flex-pipe-insulation-lagging-glue-25-litre-k-420","provider":"Airconspares.com","version":"1.0","type":"link"}