{"id":10615,"date":"2025-07-16T08:40:46","date_gmt":"2025-07-16T01:40:46","guid":{"rendered":"https:\/\/aptrubber.com\/?post_type=product&#038;p=10615"},"modified":"2026-05-30T16:26:09","modified_gmt":"2026-05-30T09:26:09","slug":"svr-cv40","status":"publish","type":"product","link":"https:\/\/aptrubber.com\/zh\/product\/svr-cv40\/","title":{"rendered":"SVR CV40 (TSR CV40)"},"content":{"rendered":"<h2>Natural Rubber SVR CV40 (TSR CV40)<\/h2>\n<p>&lt;p data-start=&quot;6308&quot; data-end=&quot;6629&quot;&gt;&lt;strong&gt;SVR CV40 (TSR CV40)&lt;\/strong&gt; is a lower-Mooney constant-viscosity natural rubber grade with target Mooney viscosity 40&plusmn;5. It is selected by rubber compounders that need softer base viscosity, easier mixing, lower processing resistance, and flexible compound formulation compared with higher-Mooney CV grades such as CV50, CV60, and CV70.&lt;\/p&gt;<br \/>\n&lt;p data-start=&quot;482&quot; data-end=&quot;699&quot;&gt;APT Rubber&rsquo;s controlled production process supports &lt;strong data-start=&quot;534&quot; data-end=&quot;578&quot;&gt;Stable Mooney performance up to 6 months&lt;\/strong&gt;, helping tire, automotive parts, and technical rubber goods manufacturers reduce processing variation during production.&lt;\/p&gt;<br \/>\n&lt;p data-start=&quot;482&quot; data-end=&quot;699&quot;&gt;Available with &lt;a href=&quot;https:\/\/aptrubber.com\/zh\/fsc-certified-natural-rubber\/&quot;&gt;FSC&reg;&lt;\/a&gt; certification and &lt;a href=&quot;https:\/\/aptrubber.com\/zh\/eudr-compliant-natural-rubber\/&quot;&gt;EUDR&lt;\/a&gt; compliance support for global tire and industrial rubber supply chains.&lt;\/p&gt;<br \/>\n&lt;p data-start=&quot;701&quot; data-end=&quot;764&quot;&gt;Check our &lt;a href=&quot;https:\/\/aptrubber.com\/zh\/natural-rubber-market-price-updates\/&quot;&gt;&lt;strong data-start=&quot;711&quot; data-end=&quot;733&quot;&gt;rubber price index&lt;\/strong&gt; &lt;\/a&gt;for current procurement rates.&lt;\/p&gt;\n<\/p>\n<h3>Quick Specifications<\/h3>\n<ul>\n<li><strong>Grade:<\/strong> SVR CV40<\/li>\n<li><strong>Mooney:<\/strong> 40\u00b15<\/li>\n<li><strong>Standard:<\/strong> APT Rubber Standard<\/li>\n<li><strong>HS Code:<\/strong> 400122.40<\/li>\n<li><strong> Incoterms:<\/strong> FOB, CIF, CFR, EXW&#8230;<\/li>\n<li><strong> FSC\u00ae supply:<\/strong> Upon request<\/li>\n<li><strong> EUDR-ready docs:<\/strong> Upon request<\/li>\n<li>APT Exclusive: Stable Mooney performance up to 6 months<\/li>\n<\/ul>\n<p>FOB Vietnam Reference Price: From $2430 \/ MT.<\/p>\n<h3>What is SVR CV40 (TSR CV40) Rubber?<\/h3>\n<p>SVR CV40 is a low-Mooney constant viscosity natural rubber grade designed to provide easier processing while maintaining stable Mooney viscosity during storage and production.<\/p>\n<h4>Key Processing Benefits<\/h4>\n<ul>\n<li>\n<p><strong>Softer Base Viscosity: <\/strong>Mooney 40\u00b15 supports easier flow and lower compound stiffness compared with higher-Mooney CV grades.<\/p>\n<\/li>\n<li>\n<p><strong>Easier Mixing &amp; Lower Processing Resistance <\/strong>Lower viscosity can help reduce mixing effort and improve compound incorporation, depending on formulation and equipment.<\/p>\n<\/li>\n<li>\n<p><strong>Consistent CV-Grade Processing:<\/strong> Controlled Mooney target supports more repeatable batch behavior than non-CV natural rubber grades.<\/p>\n<\/li>\n<\/ul>\n<h4>Viscosity Stabilization Process<\/h4>\n<ol>\n<li>Fresh Field Latex<\/li>\n<li>Stabilizer Added<\/li>\n<li>Stable Mooney ((40\u00b15))<\/li>\n<\/ol>\n<h3>Technical Data &#8211; TCVN Standard vs APT Internal Control<\/h3>\n<p>SVR CV40 (TSR CV40) is manufactured according to TCVN 3769:2016, with APT Rubber applying tighter internal control targets before shipment release.<\/p>\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>TCVN 3769:2016 Limit<\/th>\n<th>APT Internal Control<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Mooney Viscosity (ML 1+4, 100\u00b0C)<\/td>\n<td>40\u00b15<\/td>\n<td>Strictly controlled at 40\u00b15<\/td>\n<\/tr>\n<tr>\n<td>Dirt Content<\/td>\n<td>\u2264 0.02%<\/td>\n<td>&lt; 0.02%<\/td>\n<\/tr>\n<tr>\n<td>Ash Content<\/td>\n<td>\u2264 0.40%<\/td>\n<td>&lt; 0.40%<\/td>\n<\/tr>\n<tr>\n<td>Nitrogen Content<\/td>\n<td>\u2264 0.60%<\/td>\n<td>&lt; 0.60%<\/td>\n<\/tr>\n<tr>\n<td>Volatile Matter<\/td>\n<td>\u2264 0.80%<\/td>\n<td>&lt; 0.80%<\/td>\n<\/tr>\n<tr>\n<td>Plasticity Retention Index (PRI)<\/td>\n<td>\u2265 60<\/td>\n<td>&gt;60<\/td>\n<\/tr>\n<tr>\n<td>Lovibond Color<\/td>\n<td>Not applicable<\/td>\n<td>Not applicable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Need SVR CV40 (TSR CV40) for production?<\/h3>\n<p>Get the latest FOB\/CIF quotation and available shipment schedule.<\/p>\n<h3>Industrial Applications of SVR CV40 (TSR CV40)<\/h3>\n<p>Widely used by tire manufacturers, rubber compounders, and industrial rubber processors requiring stable Mooney viscosity and consistent processing performance.<\/p>\n<ul>\n<li><strong>Thin-Wall Molded Rubber Parts:<\/strong> Lower viscosity supports easier mold filling, making SVR CV40 suitable for thin-wall and complex molded rubber components.<\/li>\n<li><strong>Automotive Seals &amp; Gaskets:<\/strong> Ideal for automotive sealing compounds requiring smooth processing, stable viscosity, and consistent molded part quality.<\/li>\n<li><strong>Rubber Sheets &amp; Industrial Mats:<\/strong> Supports easier calendering and uniform compound flow for rubber sheets, mats, flooring, and general industrial products.<\/li>\n<li><strong>Footwear Soles &amp; Rubber Components:<\/strong> Suitable for flexible rubber compounds where easier mixing, smooth flow, and stable batch processing are required.<\/li>\n<li><strong>Technical Rubber Compounds:<\/strong> Preferred by compounders needing a low-viscosity natural rubber base for customized industrial formulations.<\/li>\n<li><strong>Light Extruded Rubber Profiles:<\/strong> Supports smooth extrusion for rubber strips, profiles, and light industrial goods.<\/li>\n<\/ul>\n<h3>Quality Control from Rubber Farm to Final Bale<\/h3>\n<ol>\n<li><strong>Latex Reception:<\/strong> Screening for dirt and ammonia content.<\/li>\n<li><strong>Viscosity Stabilization:<\/strong> Controlled addition of stabilizing agents.<\/li>\n<li><strong>Mechanical Processing:<\/strong> Crumbing and washing to remove impurities.<\/li>\n<li><strong>Controlled Drying:<\/strong> Maintains plasticity and prevents degradation.<\/li>\n<li><strong>VILAS Laboratory Testing:<\/strong> Each lot tested in our VILAS lab before shipment.<\/li>\n<\/ol>\n<h3>Packaging &#038; Container Loading<\/h3>\n<ul>\n<li><strong>Standard Bale Details:<\/strong> 33.33 kg or 35 kg blocks. Wrapped in Thin PE (meltable) or Thick PE (strippable).<\/li>\n<li><strong>Pallet &#038; Packing Options:<\/strong> Available in loose bales, standard wooden crates pallets, pallet shrinkwrapped or steel pallets.<\/li>\n<li><strong>Container Capacity (20ft FCL):<\/strong> Loose bales: Up to 21 MT. Palletized shipments: Approx. 19.2 \u2013 20.16 MT per 20ft container.<\/li>\n<\/ul>\n<h3>SVR CV40 (TSR CV40) vs Other Rubber Grades<\/h3>\n<p>Choose SVR CV40 when your formulation requires: Lower base viscosity than CV50, CV60, or CV70, easier mixing and faster compound incorporation, lower processing resistance during mixing, molding, extrusion. For higher-viscosity or firmer compound requirements, buyers may consider SVR CV50, SVR CV60, or SVR CV70 instead.<\/p>\n<table>\n<thead>\n<tr>\n<th>Rubber Grade<\/th>\n<th>Mooney Viscosity<\/th>\n<th>Key Feature<\/th>\n<th>Typical Application<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SVR CV40<\/td>\n<td>40\u00b15<\/td>\n<td>Lowest-Mooney CV grade in APT\u2019s CV range<\/td>\n<td>Flexible rubber compounds and easier processing blends<\/td>\n<\/tr>\n<tr>\n<td>\u7684CV60<\/td>\n<td>60\u00b15<\/td>\n<td>Standard medium-Mooney CV grade<\/td>\n<td>Tire compounds, industrial belts<\/td>\n<\/tr>\n<tr>\n<td>\u7684CV50<\/td>\n<td>50\u00b15<\/td>\n<td>Higher viscosity (firmer)<\/td>\n<td>Balanced viscosity stability for tire, automotive, and industrial compounds<\/td>\n<\/tr>\n<tr>\n<td>SVR CV70<\/td>\n<td>70\u00b15<\/td>\n<td>Higher viscosity grade<\/td>\n<td>Stiff compounds requiring stronger processing stability<\/td>\n<\/tr>\n<tr>\n<td>\u76843L<\/td>\n<td>Non-CV<\/td>\n<td>Light color, high purity<\/td>\n<td>Colored rubber, medical components<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Common Questions About SVR CV40 (TSR CV40)<\/h3>\n<p><strong>Q: 1. What is the target Mooney viscosity of SVR CV40?<\/strong><br \/>\nA: <\/p>\n<p data-start=\"840\" data-end=\"1216\">SVR CV40 is supplied with a target Mooney viscosity of <strong data-start=\"895\" data-end=\"922\">40 \u00b1 5 ML(1+4) at 100\u00b0C<\/strong>, making it suitable for manufacturers that require lower viscosity, easier flow, and smoother processing compared with higher-Mooney CV grades. Each shipment can be supported with a <a href=\"https:\/\/aptrubber.com\/zh\/quality\/\">Certificate of Analysis<\/a> showing the tested Mooney result before delivery.<\/p>\n<p data-start=\"1218\" data-end=\"1307\">\n<p><strong>Q: 2. When should I consider SVR CV40 instead of SVR CV50 or SVR CV60?<\/strong><br \/>\nA: <\/p>\n<p data-start=\"1385\" data-end=\"1688\">Choose <strong data-start=\"1392\" data-end=\"1404\">SVR CV40<\/strong> when your compound requires easier mixing, lower processing resistance, faster flow, or improved mold filling. Compared with <a href=\"https:\/\/aptrubber.com\/zh\/product\/svr-cv50-tsr-cv50\/\">\u7684CV50<\/a> and <a href=\"https:\/\/aptrubber.com\/zh\/product\/svr-cv60-tsr-cv60-natural-rubber\/\">\u7684CV60<\/a>, CV40 is more suitable when processability and energy efficiency are more important than higher green strength or higher base viscosity.<\/p>\n<p data-start=\"1690\" data-end=\"1864\">For applications requiring stronger shape retention, higher compound stiffness, or more established tire\/automotive specifications, SVR CV50 or SVR CV60 may be more suitable.<\/p>\n<\/p>\n<p><strong>Q: Is SVR CV40 covered by TCVN 3769:2016?<\/strong><br \/>\nA: <\/p>\n<p>SVR CV40 should be treated as an <strong data-start=\"2024\" data-end=\"2067\">agreed constant-viscosity specification<\/strong>, not as one of the main CV grades explicitly listed in the TCVN 3769:2016 grade table. TCVN 3769:2016 lists CV50, CV60 and LoV, while also allowing other viscosity levels to be agreed between buyer and seller. Therefore, APT Rubber supplies SVR CV40 with an agreed Mooney target of <strong data-start=\"2350\" data-end=\"2360\">40 \u00b1 5<\/strong>, tested using the relevant Mooney viscosity method referenced in the standard.<\/p>\n<\/p>\n<p><strong>Q: What applications are suitable for SVR CV40?<\/strong><br \/>\nA: <\/p>\n<p>SVR CV40 is suitable for rubber products where <strong data-start=\"2694\" data-end=\"2749\">lower viscosity, easier flow, and stable processing<\/strong> are required. Typical applications include molded rubber parts, thin-wall or complex molded components, rubber sheets, mats, seals, gaskets, footwear components, and selected industrial rubber goods. Final suitability should always be confirmed through customer formulation trials. CV grades are especially relevant where viscosity consistency affects injection molding, extrusion, or precision processing stability.<\/p>\n<\/p>\n<p><strong>Q: How long can SVR CV40 maintain stable Mooney viscosity?<\/strong><br \/>\nA: <\/p>\n<p>APT Rubber supports <strong data-start=\"3394\" data-end=\"3459\">stable Mooney performance up to 6 months from production date<\/strong>, provided the rubber is stored and handled under suitable warehouse conditions. This claim should be positioned as a controlled production and storage-performance commitment, not an unconditional guarantee under all logistics or customer storage environments.<\/p>\n<\/p>\n<p><strong>Q: Can APT Rubber supply SVR CV40 with both EUDR and FSC documentation?<\/strong><br \/>\nA: <\/p>\n<p data-start=\"77\" data-end=\"281\">Yes. <strong data-start=\"82\" data-end=\"125\"><a href=\"https:\/\/aptrubber.com\/zh\/eudr-compliant-natural-rubber\/\">EUDR-aligned<\/a> and <a href=\"https:\/\/aptrubber.com\/zh\/fsc-certified-natural-rubber\/\">FSC-certified<\/a> SVR CV40<\/strong> can be arranged upon request, subject to traceable raw material availability, certification scope, shipment planning, and buyer documentation requirements.<\/p>\n<p data-start=\"283\" data-end=\"619\">For EUDR-related orders, APT Rubber can support traceability documentation such as supplier information, plot-level traceability data, GeoJSON files, and due diligence information where required. For FSC orders, supply must be confirmed based on available FSC-certified raw material and the applicable FSC chain-of-custody requirements.<\/p>\n<p data-start=\"621\" data-end=\"802\">Standard export documents may include <strong data-start=\"659\" data-end=\"723\"><a href=\"http:\/\/quality\">COA<\/a>, TDS, MSDS, invoice, packing list, certificate of origin<\/strong>, and other shipment documents depending on destination and buyer requirements.<\/p><\/p>","protected":false},"excerpt":{"rendered":"<p>SVR CV60 (TSR CV60) natural rubber<\/p>","protected":false},"featured_media":12745,"template":"","categories":[],"class_list":["post-10615","product","type-product","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/aptrubber.com\/zh\/wp-json\/wp\/v2\/product\/10615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aptrubber.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/aptrubber.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aptrubber.com\/zh\/wp-json\/wp\/v2\/media\/12745"}],"wp:attachment":[{"href":"https:\/\/aptrubber.com\/zh\/wp-json\/wp\/v2\/media?parent=10615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aptrubber.com\/zh\/wp-json\/wp\/v2\/categories?post=10615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}