{"product_id":"ledar-ms7188-two-component-ms-polymer-joint-sealant","title":"Ledar MS7188 Two-Component MS Polymer Joint Sealant","description":"\u003cp\u003eMS7188 is a two-component, MS polymer, based joint sealant specially designed for long-term sealing of concrete expansion joints in demanding infrastructure applications. By mixing Component A and B at the specified ratio, the sealant cures through moisture-triggered crosslinking. The curing speed is temperature-dependent, faster at higher temperatures and slower in colder conditions, allowing flexible application in different environments.\u003c\/p\u003e\n\u003cp\u003eWith its ultra-low modulus, exceptionally high elongation and excellent elastic recovery, MS7188 effectively accommodates large joint movements caused by thermal expansion, contraction and structural deformation. It provides reliable adhesion to both porous and non-porous substrates, including concrete, stone, metal and masonry.\u003c\/p\u003e\n\u003cp\u003eOnce cured, MS7188 forms a smooth, durable surface that can be sanded and painted, ensuring both functional performance and clean appearance in large-scale civil engineering projects.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0704\/1558\/1340\/files\/Ledar_MS7188_Two-Component_MS_Polymer_Joint_Sealant.png?v=1766047997\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUltra-low modulus \u0026amp; high elongation (≥600%)\u003cbr\u003eEffectively absorbs large joint movements without cracking or debonding.\u003c\/li\u003e\n\u003cli\u003eExcellent elastic recovery (\u0026gt;70%)\u003cbr\u003eFast response and minimal permanent deformation under repeated joint movement.\u003c\/li\u003e\n\u003cli\u003eLow odor \u0026amp; low VOC formulation\u003cbr\u003eFree from isocyanates, PVC and organic solvents for safer application.\u003c\/li\u003e\n\u003cli\u003eOutstanding UV and weather resistance\u003cbr\u003eDesigned for long-term outdoor exposure with a service life exceeding 20 years.\u003c\/li\u003e\n\u003cli\u003eLow shrinkage after curing\u003cbr\u003eMaintains joint profile with no sinking or surface defects.\u003c\/li\u003e\n\u003cli\u003eSubstrate-friendly stress behavior\u003cbr\u003eApplies controlled low stress to concrete during passive deformation, protecting the concrete surface.\u003c\/li\u003e\n\u003cli\u003ePaintable \u0026amp; sandable after curing\u003cbr\u003eAllows seamless integration with surrounding surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMS7188 is engineered for long-lasting weatherproof sealing of concrete expansion joints in infrastructure and transportation projects, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAirport runways and aprons\u003c\/li\u003e\n\u003cli\u003eHighways and expressways\u003c\/li\u003e\n\u003cli\u003eBridges and elevated roads\u003c\/li\u003e\n\u003cli\u003eTunnels and metro systems\u003c\/li\u003e\n\u003cli\u003eOther concrete pavement expansion joints\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure bonding surfaces are clean, dry, oil-free, and dust-free before application.\u003c\/li\u003e\n\u003cli\u003eMix Component A and Component B thoroughly within 5–10 minutes.\u003c\/li\u003e\n\u003cli\u003eRemove surface rust or oxidation from metal substrates prior to sealing.\u003c\/li\u003e\n\u003cli\u003eAlways conduct pre-application testing due to variations in substrates and site conditions.\u003c\/li\u003e\n\u003cli\u003eRecommended application temperature: +15°C to +40°C.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn low-temperature environments, adjusting the proportion of Component B can help improve curing efficiency.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 99.9987%; height: 372.083px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Item\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; height: 19.5833px; text-align: center;\"\u003eSpecification\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; height: 19.5833px; text-align: center;\"\u003eStandard \/ Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eBase Material\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003eMS Polymer\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eAppearance\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003eA: White paste \/ B: Black paste\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003eVisual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eDensity\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003eApprox. 1.4 g\/cm³\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e23°C x 50% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eSag Resistance\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e\u0026lt;3.0 mm\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003eJC\/T 976-2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003ePot Life\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e\u0026gt;40 min\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e23°C x 50% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eTack-Free Time\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e\u0026lt;4 h\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eElastic Recovery\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e\u0026gt;70%\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003eJC\/T 976-2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eTensile Modulus (23°C)\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e≤0.3 MPa\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003eJC\/T 976-2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eTensile Modulus (-20°C)\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e≤0.6 MPa\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eElongation at Break\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e≥600%\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eAdhesion at 100% Extension\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003eJC\/T 976-2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 39.1667px;\"\u003eAdhesion After Water Immersion\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 39.1667px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 39.1667px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 39.1667px;\"\u003eAdhesion After Cold Stretch \u0026amp; Heat Compression\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 39.1667px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 39.1667px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eMass Loss\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e≤5%\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003eJC\/T 976-2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eService Temperature\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e-40°C to +90°C\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003eMax. 180°C (\u0026lt;20 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eUV \u0026amp; Weather Resistance\u003c\/td\u003e\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003eNo yellowing or cracking after 6 weeks UV\u003c\/td\u003e\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003eArtificial UV aging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTest specimens cured at 23°C x 50% RH for 28 days.\u003c\/p\u003e","brand":"Ever Trust Tools","offers":[{"title":"MS Polymer \/ Concrete \/ \u003e20 years (typical)","offer_id":45828460249244,"sku":null,"price":0.0,"currency_code":"CNY","in_stock":true},{"title":"MS Polymer \/ Stone \/ \u003e20 years (typical)","offer_id":45828460282012,"sku":null,"price":0.0,"currency_code":"CNY","in_stock":false},{"title":"MS Polymer \/ Metal \/ \u003e20 years (typical)","offer_id":45828460314780,"sku":null,"price":0.0,"currency_code":"CNY","in_stock":false},{"title":"MS Polymer \/ Masonry \/ \u003e20 years (typical)","offer_id":45828460347548,"sku":null,"price":0.0,"currency_code":"CNY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/1558\/1340\/files\/Ledar_MS7188_Two-Component_MS_Polymer_Joint_Sealant.png?v=1766047997","url":"https:\/\/www.evertrusttools.com\/zh\/products\/ledar-ms7188-two-component-ms-polymer-joint-sealant","provider":"Ever Trust Tools","version":"1.0","type":"link"}