{"id":2234,"date":"2026-01-05T02:59:30","date_gmt":"2026-01-05T02:59:30","guid":{"rendered":"https:\/\/www.oem-silicone.com\/?p=2234"},"modified":"2026-01-05T02:59:33","modified_gmt":"2026-01-05T02:59:33","slug":"xinnengyuanhangyeyongguijiaomifengjiannaihouzuranyuchangqike","status":"publish","type":"post","link":"https:\/\/www.oem-silicone.com\/en\/news\/2234\/","title":{"rendered":"Silicone seals for the new energy industry: what about weathering, flame resistance and long-term reliability?"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Why is the new energy sector more \"selective\"?<\/h2>\n\n\n\n<p>New energy related products are commonly characterized:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Outdoor\/Semi-Outdoor<\/strong>Use, long-term exposure to UV, rain, temperature differences<\/li>\n\n\n\n<li>Frequent temperature cycling and longer lifetime targets<\/li>\n\n\n\n<li>May involve flame retardant, safety and reliability verification<\/li>\n<\/ul>\n\n\n\n<p>Therefore, the core of silicone seals for new energy is not only \"can seal\", but \"long-term stable sealing\".<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common Application Scenarios<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dust and waterproof sealing of battery pack\/electronic control housing<\/li>\n\n\n\n<li>Connector and feedthrough hole sealing<\/li>\n\n\n\n<li>Structural cushioning and vibration damping (with sealing)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Key requirement: you need to write these 4 items clearly<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1) Weathering and aging resistance<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>UV, ozone, rain, heat and humidity<\/li>\n\n\n\n<li>Hardening, cracking, loss of resilience after prolonged exposure<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2) Seal retention under differential temperature cycling<\/h3>\n\n\n\n<p>Temperature changes bring about material expansion and contraction with stress relaxation.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Focus on: whether leakage starts after hot and cold cycles<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3) Flame retardant or safety requirements (if applicable)<\/h3>\n\n\n\n<p>If the product requires flame retardancy, the target level and test method need to be confirmed at an early stage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4) Assembly consistency<\/h3>\n\n\n\n<p>New energy products tend to have large batch sizes and fast assembly beats.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Need to be structurally more \"fluctuation-resistant\": lead-in angles, positioning, compression margins<\/li>\n<\/ul>\n\n\n\n<p><aside> \ud83e\uddea<\/p>\n\n\n\n<p>It is recommended to include the \"verification method\" in the requirements: e.g. hot\/cold cycle, hot\/humid, sealed test conditions.<\/p>\n\n\n\n<p><\/aside><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Selection ideas: material, hardness, structure together to determine the<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Large structural gaps and pressure fluctuations: consider higher hardness or reinforced supports<\/li>\n\n\n\n<li>Need for better fit: consider medium stiffness and optimize compression<\/li>\n\n\n\n<li>Outdoor long-term: prioritize weathering and aging data over initial hardness alone<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Common validation programs (selected according to actual needs)<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dimensional Consistency (Critical Dimension CTQ)<\/li>\n\n\n\n<li>Sealing tests (spray\/water immersion\/airtight, etc., specify conditions)<\/li>\n\n\n\n<li>Hot and cold cycle test<\/li>\n\n\n\n<li>Damp heat aging<\/li>\n\n\n\n<li>Compression Permanent Deformation Comparison<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Common Causes of Failure<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Insufficient or uneven compression of trench design<\/li>\n\n\n\n<li>Insufficient lead-in angle leads to assembly scratches<\/li>\n\n\n\n<li>Poor gap control leads to extrusion<\/li>\n\n\n\n<li>Insufficient rebound after aging<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Why is the new energy industry more \"picky\"? The common characteristics of new energy related products are: Therefore, the core of silicone seals for new energy is not just \"able to seal\", but 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