{"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\n\u003cp\u003e With 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\n\u003cp\u003e Once 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\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\n\u003cp\u003e \u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n \u003cli\u003eUltra-low modulus \u0026amp; high elongation (≥600%)\u003cbr\u003e Effectively absorbs large joint movements without cracking or debonding.\u003c\/li\u003e\n\n\u003cli\u003e Excellent elastic recovery (\u0026gt;70%)\u003cbr\u003e Fast response and minimal permanent deformation under repeated joint movement.\u003c\/li\u003e\n\n\u003cli\u003e Low odor \u0026amp; low VOC formulation\u003cbr\u003e Free from isocyanates, PVC and organic solvents for safer application.\u003c\/li\u003e\n\n\u003cli\u003e Outstanding UV and weather resistance\u003cbr\u003e Designed for long-term outdoor exposure with a service life exceeding 20 years.\u003c\/li\u003e\n\n\u003cli\u003e Low shrinkage after curing\u003cbr\u003e Maintains joint profile with no sinking or surface defects.\u003c\/li\u003e\n\n\u003cli\u003e Substrate-friendly stress behavior\u003cbr\u003e Applies controlled low stress to concrete during passive deformation, protecting the concrete surface.\u003c\/li\u003e\n\n\u003cli\u003e Paintable \u0026amp; sandable after curing\u003cbr\u003e Allows seamless integration with surrounding surfaces.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e MS7188 is engineered for long-lasting weatherproof sealing of concrete expansion joints in infrastructure and transportation projects, including:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Airport runways and aprons\u003c\/li\u003e\n\n\u003cli\u003e Highways and expressways\u003c\/li\u003e\n\n \u003cli\u003eBridges and elevated roads\u003c\/li\u003e\n\n\u003cli\u003e Tunnels and metro systems\u003c\/li\u003e\n\n\u003cli\u003e Other concrete pavement expansion joints\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eApplication Notes\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Ensure bonding surfaces are clean, dry, oil-free, and dust-free before application.\u003c\/li\u003e\n\n\u003cli\u003e Mix Component A and Component B thoroughly within 5–10 minutes.\u003c\/li\u003e\n\n\u003cli\u003e Remove surface rust or oxidation from metal substrates prior to sealing.\u003c\/li\u003e\n\n\u003cli\u003e Always conduct pre-application testing due to variations in substrates and site conditions.\u003c\/li\u003e\n\n\u003cli\u003e Recommended application temperature: +15°C to +40°C.\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e In low-temperature environments, adjusting the proportion of Component B can help improve curing efficiency.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e \u003c\/p\u003e\n\n\u003ctable width=\"100%\" style=\"width: 99.9987%; height: 372.083px;\"\u003e\n\n\u003ctbody\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Item\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; height: 19.5833px; text-align: center;\"\u003e Specification\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; height: 19.5833px; text-align: center;\"\u003e Standard \/ Notes \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Base Material\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e MS Polymer\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Appearance\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e A: White paste \/ B: Black paste\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e Visual \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Density\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e Approx. 1.4 g\/cm³\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e 23°C x 50% RH \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Sag Resistance\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e \u0026lt;3.0 mm\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e JC\/T 976-2005 \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Pot Life\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e \u0026gt;40 min\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e 23°C x 50% RH \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Tack-Free Time\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e \u0026lt;4 h\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Elastic Recovery\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e \u0026gt;70%\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e JC\/T 976-2005 \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Tensile Modulus (23°C)\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e ≤0.3 MPa\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e JC\/T 976-2005 \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Tensile Modulus (-20°C)\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e ≤0.6 MPa\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Elongation at Break\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e ≥600%\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n \u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003eAdhesion at 100% Extension\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e JC\/T 976-2005 \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 39.1667px;\"\u003e Adhesion After Water Immersion\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 39.1667px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 39.1667px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 39.1667px;\"\u003e Adhesion After Cold Stretch \u0026amp; Heat Compression\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 39.1667px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 39.1667px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Mass Loss\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e ≤5%\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e JC\/T 976-2005 \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e Service Temperature\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e -40°C to +90°C\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e Max. 180°C (\u0026lt;20 min) \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\n\u003ctd style=\"width: 32.6356%; text-align: center; height: 19.5833px;\"\u003e UV \u0026amp; Weather Resistance\u003c\/td\u003e\n\n\u003ctd style=\"width: 37.8935%; text-align: center; height: 19.5833px;\"\u003e No yellowing or cracking after 6 weeks UV\u003c\/td\u003e\n\n\u003ctd style=\"width: 29.0094%; text-align: center; height: 19.5833px;\"\u003e Artificial UV aging\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e Test specimens cured at 23°C x 50% RH for 28 days.\u003c\/p\u003e","brand":"Ever Trust Tools","offers":[{"title":"MS Polymer \/ Concrete \/ \u0026gt;20 years (typical)","offer_id":45828460249244,"sku":null,"price":0.0,"currency_code":"CNY","in_stock":true},{"title":"MS Polymer \/ Stone \/ \u0026gt;20 years (typical)","offer_id":45828460282012,"sku":null,"price":0.0,"currency_code":"CNY","in_stock":false},{"title":"MS Polymer \/ Metal \/ \u0026gt;20 years (typical)","offer_id":45828460314780,"sku":null,"price":0.0,"currency_code":"CNY","in_stock":false},{"title":"MS Polymer \/ Masonry \/ \u0026gt;20 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:\/\/trading.evertrusttools.com\/products\/ledar-ms7188-two-component-ms-polymer-joint-sealant","provider":"Ever Trust Tools","version":"1.0","type":"link"}