{"id":19922,"date":"2025-01-12T10:47:48","date_gmt":"2025-01-12T10:47:48","guid":{"rendered":"https:\/\/duksilicone.com\/?page_id=19922"},"modified":"2025-01-12T10:47:51","modified_gmt":"2025-01-12T10:47:51","slug":"difference-between-tin-cure-vs-platinum-cure-silicone","status":"publish","type":"page","link":"https:\/\/duksilicone.com\/?page_id=19922","title":{"rendered":"Difference Between Tin-Cure vs. Platinum-Cure Silicone"},"content":{"rendered":"\n

We offer two main types of silicone rubbers: tin-cured<\/strong> (Supersil T-series) and platinum-cured<\/strong> (Supersil P-series).<\/p>\n\n\n\n

1. Tin-Cure Silicone Rubber<\/strong><\/h3>\n\n\n\n

SuperSil\u2122 Tin-cured Silicone rubber is a two-component material that cures at room temperature through a condensation reaction. It\u2019s a versatile RTV silicone elastomer that provides excellent tear strength, accurate detail reproduction, and long-lasting performance. It’s ideal for making molds for casting polyurethanes, epoxies, polyester resins, cement, wax, soap, plaster, and more. Tin-cured silicone is easy to mix, de-air, and cures on nearly any surface.<\/p>\n\n\n\n

2. Platinum-Cure Silicone Rubber<\/strong><\/h3>\n\n\n\n

Platinum-cured silicone, also known as addition-cure silicone, is a room-temperature curing silicone that produces flexible, high-strength molds. SuperSil\u2122 Platinum-cured molds offer superior release properties, and no release agent is needed when casting most materials. Unlike tin-cured silicones, platinum-cured silicones do not shrink during curing and have a longer library life.<\/p>\n\n\n\n

Comparison: Tin-Cured vs. Platinum-Cured Silicone Mold Rubbers<\/strong><\/h3>\n\n\n\n
    \n
  • Cure Type<\/strong>:
    Tin-cured silicones (Supersil T-series) are condensation-cure systems, which shrink slightly (about 0.5%) during curing. Platinum-cured silicones (Supersil P-series) are addition-cure systems, which do not shrink.<\/li>\n\n\n\n
  • Library Life<\/strong>:
    Tin-cured silicones have a shorter library life (2 to 5 years) compared to platinum-cured silicones, which last longer.<\/li>\n\n\n\n
  • Cost<\/strong>:
    Tin-cured silicones are generally more cost-effective than platinum-cured silicones.<\/li>\n\n\n\n
  • Material Sensitivity<\/strong>:
    Platinum-cured silicones are more sensitive to certain materials, such as sulfur, tin compounds, and Bondo, and can suffer from cure inhibition (uncured surface material) more frequently than tin-cured silicones.<\/li>\n\n\n\n
  • Mold Inhibition<\/strong>:
    Cured tin silicone molds can inhibit some casting materials, including platinum-cured silicones and many polyurethane rubbers.<\/li>\n\n\n\n
  • Safety<\/strong>:
    Platinum-cured silicones are non-toxic, food-grade, and skin-safe, making them suitable for use in food and medical products.<\/li>\n<\/ul>\n\n\n\n

    Mold Making Materials Comparison<\/strong><\/h3>\n\n\n\n
    Type<\/th>Advantages<\/th>Disadvantages<\/th>Casting Materials<\/th><\/tr><\/thead>
    Tin-Cured Silicone<\/strong><\/td>High strength, cost-effective<\/td>Shrinks on cure (~0.3%), limited storage life, not food-grade<\/td>Most materials, especially resins, foams, plaster, wax, concrete, etc.<\/td><\/tr>
    Platinum-Cured Silicone<\/strong><\/td>No shrinkage on cure, long storage life, excellent chemical resistance, food-grade, skin-safe, simple 1:1 mix<\/td>Cure inhibition by some materials, slightly more expensive than tin-cure<\/td>Most materials, resins, foams, plaster, wax, concrete, low-melt metals, and food-grade products<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

    We offer two main types of silicone rubbers: tin-cured (Supersil T-series) and platinum-cured (Supersil P-series). 1. Tin-Cure Silicone Rubber SuperSil\u2122 Tin-cured Silicone rubber is a two-component material that cures at room temperature through a condensation reaction. It\u2019s a versatile RTV silicone elastomer that provides excellent tear strength, accurate detail reproduction, and long-lasting performance. It’s ideal […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-19922","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/duksilicone.com\/index.php?rest_route=\/wp\/v2\/pages\/19922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/duksilicone.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/duksilicone.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/duksilicone.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/duksilicone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19922"}],"version-history":[{"count":1,"href":"https:\/\/duksilicone.com\/index.php?rest_route=\/wp\/v2\/pages\/19922\/revisions"}],"predecessor-version":[{"id":19923,"href":"https:\/\/duksilicone.com\/index.php?rest_route=\/wp\/v2\/pages\/19922\/revisions\/19923"}],"wp:attachment":[{"href":"https:\/\/duksilicone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}