{"product_id":"west-system-404-high-density-filler-30lb","title":"West System 404 High-Density Filler – 30 lb","description":"\u003ch2\u003eWest System 404 High-Density Filler – 30 lb\u003c\/h2\u003e\u003cp\u003eA high-strength thickening additive formulated for epoxy-based hardware bonding, filleting, and gap filling where maximum load resistance is required. When blended into mixed epoxy resin, 404 High-Density Filler produces a stiff, non-sagging adhesive paste that cures to an off-white colour and delivers exceptional resistance to cyclic and shear loads.\u003c\/p\u003e\u003cp\u003eThe 30 lb bulk format is suited for production boatbuilding, boatyard repair operations, and large-scale projects where filler consumption is high and per-unit economy matters.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEngineered for maximum physical properties in hardware bonding under high cyclic loads\u003c\/li\u003e\n\u003cli\u003eProduces a stiff, gap-filling adhesive paste when blended with mixed epoxy\u003c\/li\u003e\n\u003cli\u003eSuitable for filleting, fairing, and structural gap filling where strength is the priority\u003c\/li\u003e\n\u003cli\u003eCures to an off-white colour for a clean, paintable finish\u003c\/li\u003e\n\u003cli\u003eNon-sagging consistency holds position on vertical and overhead surfaces\u003c\/li\u003e\n\u003cli\u003e30 lb bulk size for high-volume production and boatyard use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBonding deck hardware, cleats, and through-deck fittings subject to high cyclic loads\u003c\/li\u003e\n\u003cli\u003eStructural filleting at bulkhead-to-hull and frame-to-hull joints\u003c\/li\u003e\n\u003cli\u003eGap filling in structural joints where maximum bond strength is required\u003c\/li\u003e\n\u003cli\u003eBedding hardware where a rigid, load-bearing adhesive is preferred over flexible sealants\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUse With\u003c\/h3\u003e\u003cp\u003eMix into combined epoxy resin and hardener to achieve desired consistency. Recommended epoxy systems:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/west-system-c105a-epoxy-resin-946-ml-32-oz\"\u003eWest System C105A Epoxy Resin – 946 ml\u003c\/a\u003e — Standard laminating resin base\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/west-system-c105b-epoxy-resin-3-74l-98gal\"\u003eWest System C105B Epoxy Resin – 3.74 L\u003c\/a\u003e — Mid-volume resin for extended jobs\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/west-system-c105c-epoxy-resin-16-46l-4-35gal\"\u003eWest System C105C Epoxy Resin – 16.46 L\u003c\/a\u003e — Production-scale resin pail\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/west-system-c205-hardener-814-ml-27-5-oz\"\u003eWest System C205 Hardener – 814 ml\u003c\/a\u003e — Standard cure hardener\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRelated Fillers\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/west-system-406-colloidal-silica-filler-10-lb\"\u003eWest System 406 Colloidal Silica Filler – 10 lb\u003c\/a\u003e — Thixotropic filler for adhesive bonding and fairing on vertical surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/west-system-655-405-filleting-blend\"\u003eWest System 405 Filleting Blend\u003c\/a\u003e — Smooth, wood-toned filler optimised for interior fillets and cosmetic joints\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest Use Cases:\u003c\/strong\u003e 404 High-Density Filler is the right choice when the bond needs to carry real structural load — particularly for hardware installations like cleats, winch bases, stanchion bases, and through-deck fittings where cyclic tension and shear forces are ongoing. It outperforms softer fillers in these applications because its high-density composition resists compression and deformation under load. For cosmetic fillets or fairing where strength is secondary to workability and finish, the \u003ca href=\"\/products\/west-system-655-405-filleting-blend\"\u003e405 Filleting Blend\u003c\/a\u003e or \u003ca href=\"\/products\/west-system-406-colloidal-silica-filler-10-lb\"\u003e406 Colloidal Silica\u003c\/a\u003e are better choices.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Add filler gradually to the mixed epoxy and stir thoroughly until the paste reaches a peanut-butter consistency that holds its shape without slumping. Over-filling reduces bond strength — use the minimum amount needed to achieve the desired gap-filling or filleting profile.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51233004421156,"sku":"655-404B","price":376.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/655-40445_96a792ba-35b6-458b-8aee-a26fc3c92f6b.jpg?v=1786152024","url":"https:\/\/marisolmarine.com\/products\/west-system-404-high-density-filler-30lb","provider":"Marisol Marine Company","version":"1.0","type":"link"}