{"product_id":"west-system-209-extra-slow-hardener","title":"West System 209 Extra Slow Hardener","description":"\u003cp\u003e209 is the extra slow hardener for West System 105 resin: 3:1 by volume, 40 to 50 minutes of pot life in a 100 g cup at 72°F (22°C), about twice the working time of 206. It is the hardener for hot, humid shops and for big layups and glue-ups where 206 still kicks before you are done.\u003c\/p\u003e\n\u003c!--bs-body-v1--\u003e\n\u003cp\u003eIn a thin film you get 3 to 4 hours of working time at 72°F; it goes solid in 20 to 24 hours and reaches maximum strength in 4 to 9 days. Keep the work at 70°F (21°C) or warmer: below that the cure drags and \u003ca href=\"\/products\/west-system-206-slow-hardener\"\u003e206 slow\u003c\/a\u003e is the better pick. It is not a clear-coating hardener; for bright wood use \u003ca href=\"\/products\/west-system-207-special-clear-hardener\"\u003e207 special clear\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e105\/209 bonds, laminates and builds barrier coats on fiberglass, wood, foam and metal, and it thickens with any West System filler. It meters with the 207\/209 hardener pump in the \u003ca href=\"\/products\/west-system-300-mini-pump-set\"\u003e300 Mini Pump Set\u003c\/a\u003e, and the 209-SC jug comes with the Group C extension tubes.\u003c\/p\u003e\n\u003cdiv class=\"bs-spec-block\"\u003e\n\u003c!--bs-body-v2--\u003e\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003ctable class=\"bs-specs\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRatio\u003c\/th\u003e\n\u003ctd\u003e3 parts 105 resin to 1 part 209 by volume (3.68:1 by weight); meters with the 207\/209 pump in the 300 Mini Pump Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMixed viscosity\u003c\/th\u003e\n\u003ctd\u003e650 cps at 72°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePot life\u003c\/th\u003e\n\u003ctd\u003e40 to 50 min (100 g at 72°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWorking time\u003c\/th\u003e\n\u003ctd\u003e3 to 4 hr in a thin film at 72°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCure\u003c\/th\u003e\n\u003ctd\u003esolid in 20 to 24 hr; maximum strength in 4 to 9 days; minimum temperature 70°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCured strength\u003c\/th\u003e\n\u003ctd\u003etensile 7,300 psi (ASTM D-638); flexural 12,500 psi (ASTM D-790); HDT 117°F (105\/209)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd\u003e209-SA 10.6 fl oz, 209-SB 42.2 fl oz (0.33 gallon), 209-SC 1.45 gallon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eBuy 209 when heat or the size of the job is what beats you. In summer heat 206 can kick in the cup before a long layup is wet out; 209 roughly doubles that window. Match the size to your resin, 209-SA with the 105-A quart, 209-SB with the 105-B gallon, 209-SC with the 105-C jug, so the pumps meter right from both cans. See the full \u003ca href=\"\/collections\/west-system\"\u003eWest System\u003c\/a\u003e lineup.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"West System","offers":[{"title":"10.6 fl oz (209-SA)","offer_id":67756307317038,"sku":"SWES-209-SA","price":57.83,"currency_code":"USD","in_stock":true},{"title":"42.2 fl oz (209-SB)","offer_id":67756307349806,"sku":"SWES-209-SB","price":121.64,"currency_code":"USD","in_stock":true},{"title":"1.45 Gallon (209-SC)","offer_id":67756307382574,"sku":"SWES-209-SC","price":350.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0840\/4071\/2494\/files\/bs-ws4-209-209-SA.jpg?v=1792275943","url":"https:\/\/boatsuppliers.com\/products\/west-system-209-extra-slow-hardener","provider":"Boat Suppliers","version":"1.0","type":"link"}