{"product_id":"yh-991ab-transparent-silicone-potting-compound-two-component-1-1-ab-silicone-encapsulant-for-pcb-led-driver-electronic-modules","title":"YH-991AB Transparent Silicone Potting Compound | Two Component 1:1 AB Silicone Encapsulant for PCB, LED Driver \u0026 Electronic Modules","description":"\u003ch2\u003eH1: YH-991A\/B Transparent Silicone Potting Compound\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0779\/2368\/0484\/files\/991AB_1.jpg?v=1789032552\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eTwo-Component · Mix Ratio A:B=1:1 · RoHS Compliant\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003eYH-991A\/B is a high-clarity two-part silicone potting compound designed for electronic encapsulation and protection. This 1:1 mix ratio AB silicone gel cures at room temperature or with heat acceleration, forming a flexible, low-stress transparent protective layer for sensitive electronic components.\u003c\/p\u003e\n\u003ch3\u003eKey Advantages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh clarity \u0026amp; transparent after curing, easy for visual inspection of circuits\u003c\/li\u003e\n\u003cli\u003eExcellent electrical insulation performance\u003c\/li\u003e\n\u003cli\u003eRoom temperature curing, simple operation with 1:1 weight mixing ratio\u003c\/li\u003e\n\u003cli\u003eWide working temperature range: -60℃ ~ 200℃\u003c\/li\u003e\n\u003cli\u003eLow viscosity for easy pouring and bubble release\u003c\/li\u003e\n\u003cli\u003eLow stress \u0026amp; flexible cured material, no damage to delicate electronics\u003c\/li\u003e\n\u003cli\u003eWaterproof and moisture-proof, blocks dust, vapor and mild chemical corrosion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0779\/2368\/0484\/files\/991AB_5.jpg?v=1789032913\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePart Properties\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePart A: Colorless oily liquid, Viscosity(25℃):850-1100 cps, Density:0.96-1.0 g\/cm³\u003c\/li\u003e\n\u003cli\u003ePart B: Colorless transparent liquid, Viscosity(25℃):400-650 cps, Density:0.94-0.98 g\/cm³\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMixing Parameters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMixing Ratio (By weight): A:B = 1:1\u003c\/li\u003e\n\u003cli\u003eMixed Viscosity (25℃):450-600 cps\u003c\/li\u003e\n\u003cli\u003eSurface skin time(70g,25℃):90-120 min\u003c\/li\u003e\n\u003cli\u003eWorking time(50g,25℃):50-60 min\u003c\/li\u003e\n\u003cli\u003eCuring Schedule: 24h @25℃ (room temp cure); 40±5 min @80℃ (heat cure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCured Properties\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHardness: Shore A 17-22\u003c\/li\u003e\n\u003cli\u003eDielectric strength: ≥15 kV\/mm\u003c\/li\u003e\n\u003cli\u003eVolume resistivity: ≥1.0×10¹⁶ Ω·cm\u003c\/li\u003e\n\u003cli\u003eLinear shrinkage: 0.03%\u003c\/li\u003e\n\u003cli\u003eShelf life: 6 months\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: All typical data tested at 25℃, RH 55%. For buyer reference only.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0779\/2368\/0484\/files\/991AB_3.jpg?v=1789032620\" alt=\"\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eYH-991A\/B transparent silicone potting compound is widely used for sealing and encapsulation of:\u003cbr\u003e✅ LED strip light \u0026amp; LED driver\u003cbr\u003e✅ PCB circuit modules\u003cbr\u003e✅ Electronic components\u003cbr\u003e✅ Automotive \u0026amp; industrial sensors\u003cbr\u003e✅ Display lamps\u003cbr\u003e✅ Outdoor electronic control units\u003c\/p\u003e\n\u003cp\u003eIt provides gentle low-stress protection, perfectly protects electronics from extreme hot \u0026amp; cold environment, vibration, moisture and dust.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0779\/2368\/0484\/files\/991AB_6.jpg?v=1789032913\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eOperation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeighing \u0026amp; Mixing\u003c\/strong\u003e Accurately weigh Part A and Part B at 1:1 by weight. Stir thoroughly, scrape the container walls and bottom to achieve uniform mixture. Stir Part A evenly before use.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cblockquote\u003e\n\u003cp\u003ePart A: colorless oily liquid; Part B: colorless transparent liquid\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003col start=\"2\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotting\u003c\/strong\u003e Pour mixed silicone compound into your electronic housing promptly. The low-viscosity material flows freely and fills all small gaps. Second potting is acceptable if needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCuring\u003c\/strong\u003e Room temperature (25℃): fully cure within 24 hours. Heat curing at 80℃: fully cure in 40±5 minutes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0779\/2368\/0484\/files\/991AB_8.jpg?v=1789032750\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0779\/2368\/0484\/files\/991AB_9.jpg?v=1789032790\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003ePackaging \u0026amp; Storage\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePackaging Options\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStandard set: A:20kg + B:20kg (40kg\/set)\u003c\/li\u003e\n\u003cli\u003eSmall set: A:5kg + B:5kg (10kg\/set)\u003c\/li\u003e\n\u003cli\u003eCustom packaging available upon request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eStorage Requirements\u003c\/strong\u003e Store sealed in a cool and dry environment at 25℃. Shelf life: 6 months. Classified as non-dangerous goods for shipment.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0779\/2368\/0484\/files\/991AB_10.jpg?v=1789032664\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eSafety Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIn case of eye contact: Rinse eyes with clean water and seek medical help immediately.\u003c\/li\u003e\n\u003cli\u003eIn case of skin contact: Wash skin thoroughly with soap and running water.\u003c\/li\u003e\n\u003cli\u003eRun small batch test before mass production.\u003c\/li\u003e\n\u003cli\u003eKeep working area dry and clean.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWhy Choose Us\u003c\/h3\u003e\n\u003cp\u003eWe are a professional silicone \u0026amp; epoxy potting compound manufacturer. We provide free sample testing, full TDS\/SDS documents, stable bulk supply and custom formulation service for global electronic manufacturers and distributors. Contact us for technical support and wholesale quotation.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0779\/2368\/0484\/files\/991AB_4.jpg?v=1789032912\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"SOFAY","offers":[{"title":"Default Title","offer_id":49832875098340,"sku":null,"price":6.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/2368\/0484\/files\/ClearepoxyABglue.jpg?v=1789033458","url":"https:\/\/sofaytech.com\/products\/yh-991ab-transparent-silicone-potting-compound-two-component-1-1-ab-silicone-encapsulant-for-pcb-led-driver-electronic-modules","provider":"SOFAY","version":"1.0","type":"link"}