{"product_id":"sika-西卡-sikahyflex®-305-ap-外牆密封膠","title":"Sika SikaHyflex-305 AP","description":"\u003cdiv class=\"tldr-box\" style=\"background:#f0f4f8;border-left:4px solid #2c5282;padding:16px;margin-bottom:24px;\"\u003e\u003cstrong\u003eQuick Summary:\u003c\/strong\u003e\u003cp\u003eSikaHyflex-305 AP is a one-component, neutral-cure silicone elastic sealant by Sika, designed for weather sealing joints in curtain walls and metal-clad facades. Very high movement capability, excellent weathering resistance, wide service temperature range, solvent-free, neutral cure with no corrosion risk. Note: not paintable.\u003c\/p\u003e\u003c\/div\u003e\u003ch2\u003eSikaHyflex 305 AP Features\u003c\/h2\u003e\u003cp\u003eSikaHyflex-305 AP is a one-component, neutral-cure, low-modulus silicone elastic sealant designed for curtain walls, metal-clad facades and demanding weather sealing applications requiring long-term durability. It offers excellent weathering and ageing performance with very high joint movement capability while maintaining good elasticity. The neutral-cure, solvent-free formula provides good adhesion to multiple substrates without causing corrosion or compatibility issues.\u003c\/p\u003e\u003cul\u003e\u003cli\u003eOne-component, neutral-cure silicone sealant\u003c\/li\u003e\u003cli\u003eVery high joint movement capability\u003c\/li\u003e\u003cli\u003eExcellent weathering resistance (highest rating)\u003c\/li\u003e\u003cli\u003eVery wide service temperature range\u003c\/li\u003e\u003cli\u003eGood adhesion to metals, glass, concrete and many substrates\u003c\/li\u003e\u003cli\u003eNeutral cure, solvent-free, no corrosion risk\u003c\/li\u003e\u003cli\u003eGood workability, easy to handle and control\u003c\/li\u003e\u003cli\u003eCompatible with other SikaHyflex and Sikasil silicone products\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eCurtain Wall Joints\u003c\/strong\u003e — weather sealing joints in curtain wall systems\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eMetal-Clad Facades\u003c\/strong\u003e — expansion and connection joints between metal cladding panels\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eStructural Glazing\u003c\/strong\u003e — weather sealing for glass curtain walls (non-structural)\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eBuilding Facade Joints\u003c\/strong\u003e — exterior joints subject to wind, rain and structural movement\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eHigh Temperature Environments\u003c\/strong\u003e — high-temperature joint sealing\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eWhy Choose SikaHyflex 305 AP\u003c\/h2\u003e\u003cp\u003eSikaHyflex-305 AP is a silicone-based sealant offering key advantages over polyurethane (PU) sealants like Sikaflex Construction: wider service temperature range, superior weathering resistance, and higher movement capability. The neutral-cure formula will not corrode metal substrates, making it particularly suitable for aluminium curtain walls. However, note that silicone sealants are \u003cstrong\u003enot paintable\u003c\/strong\u003e — if joints need to be painted to match, choose a PU-based Sikaflex product instead.\u003c\/p\u003e\u003ch2\u003ePackaging\u003c\/h2\u003e\u003cp\u003eCartridge. Available colours: Black, Grey (other colours available on order)\u003c\/p\u003e\u003ch2\u003eBasic Specifications\u003c\/h2\u003e\u003ctable\u003e\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProperty\u003c\/th\u003e\u003cth\u003eSpecification\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eChemical Base\u003c\/td\u003e\u003ctd\u003eNeutral-cure silicone\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eCharacteristics\u003c\/td\u003e\u003ctd\u003eLow modulus, high movement capability, excellent weathering\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003ePaintable\u003c\/td\u003e\u003ctd\u003eNo\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eImportant Notes\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eNot paintable\u003c\/strong\u003e — if paint colour matching is needed, use a PU-based sealant (e.g. Sikaflex Construction)\u003c\/li\u003e\u003cli\u003eNot suitable for natural stone\u003c\/li\u003e\u003cli\u003eNot suitable for stressed polyacrylate or polycarbonate (may cause environmental stress cracking)\u003c\/li\u003e\u003cli\u003eNot suitable for swimming pools or surroundings\u003c\/li\u003e\u003cli\u003eNot suitable for joints under hydrostatic pressure or permanent water immersion\u003c\/li\u003e\u003cli\u003eNot suitable for bituminous substrates, natural rubber, or materials that may bleed oils, plasticisers or solvents\u003c\/li\u003e\u003cli\u003eEPDM gaskets require compatibility testing\u003c\/li\u003e\u003cli\u003eUncured product must not contact alcohol-based products\u003c\/li\u003e\u003cli\u003eColour variation due to chemicals or extreme environments is normal and does not affect performance\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eFor detailed application methods, coverage rates and technical parameters, please refer to the official product data sheet.\u003c\/em\u003e\u003c\/p\u003e","brand":"Sika 西卡","offers":[{"title":"Default Title","offer_id":45242615070870,"sku":null,"price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/sika_sikahyflex_305ap_weather_sealant_product_image.png?v=1760462824","url":"https:\/\/wahhingwp.com\/en\/products\/sika-%e8%a5%bf%e5%8d%a1-sikahyflex%c2%ae-305-ap-%e5%a4%96%e7%89%86%e5%af%86%e5%b0%81%e8%86%a0","provider":"華興建築防水材料有限公司","version":"1.0","type":"link"}