--- product_id: 658293201 title: "Dowsil 3145 RTV 305ml 10.3oz Clear Adhesive Sealant Mil-A-46146 Electrical Battery Board Housing Moisture Sealing Non Flow Primerless Adhesion High Strength Group II/III" brand: "sanyi" price: "¥575" currency: JPY in_stock: false url: https://www.desertcart.jp/products/658293201-dowsil-3145-rtv-305ml-10-3oz-clear-adhesive-sealant-mil store_origin: JP region: Japan --- # 500 V/mil dielectric strength 940 psi tensile strength -45°C to 200°C thermal range Dowsil 3145 RTV 305ml 10.3oz Clear Adhesive Sealant Mil-A-46146 Electrical Battery Board Housing Moisture Sealing Non Flow Primerless Adhesion High Strength Group II/III **Brand:** sanyi **Price:** ¥575 **Availability:** ❌ Out of Stock ## Summary > 🔧 Seal smart, seal strong — the clear choice for pros who demand more! ## Quick Answers - **What is this?** Dowsil 3145 RTV 305ml 10.3oz Clear Adhesive Sealant Mil-A-46146 Electrical Battery Board Housing Moisture Sealing Non Flow Primerless Adhesion High Strength Group II/III by sanyi - **How much does it cost?** ¥575 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/658293201-dowsil-3145-rtv-305ml-10-3oz-clear-adhesive-sealant-mil) ## Best For - sanyi enthusiasts ## Why This Product - Trusted sanyi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **No Mess, No Stress:** Non-flow, primerless adhesion means faster, cleaner application with zero slump - • **Thermal Resilience:** Operates flawlessly from -45°C to 200°C, perfect for demanding environments 🌡️ - • **Durable & Flexible Seal:** 660% elongation with 940 psi tensile strength for lasting mechanical stability 💪 - • **Unmatched Electrical Protection:** High dielectric strength ensures your sensitive components stay safe ⚡ - • **Certified Military-Grade Quality:** Meets MIL-A-46146 specs for professional-grade reliability and peace of mind ## Overview DOWSIL 3145 RTV is a one-part, clear silicone adhesive sealant designed for electrical and industrial applications. It offers high dielectric strength (500 V/mil), exceptional tensile strength (940 psi), and extreme elongation (660%), ensuring durable, moisture-resistant seals on battery packs, PCBs, and housings. With a broad temperature range (-45°C to 200°C) and primerless, non-flowing application, it meets MIL-A-46146 military specifications for reliable, professional-grade performance. ## Description DOWSIL 3145 RTV Sealant Clear or Gray Available MIL-A-46146 Dow 3145 Adhesive Sealant 305ml one Bottle One-part, moisture RTV, non-flow, high strength, UL and Mil Spec. Uses Sealing openings in modules and housings. Adding mechanical stability to individual components. Assembly of components on PWBs. Sealing in and around wired and electrical leads. Temperature Range: -45 °C ~ 200 °C Benefits Non-flowing High tensile strength and elongation Enhanced thermal stability MIL-A-46146 Group II/III, TY I No mixing required Room temperature cure, no ovens required Faster in-line processing with optional heat acceleration Can be considered for uses with Mil Spec requirements Application Benefits Non-Slump Primerless Adhesion Use: Battery Pack, Boards and Assemblies, Components, Housings Water Resistant Certifications & Standards Regulatory Approvals: MIL Spec Product Use and Formulating Cure Characteristics: Room Temperature Long Working Time > 10 min Cure Type: Alkoxy Cure, Condensation Cure, Methoxy Cure Number of Parts: 1 part Room Temperature Cure: 48 Hours Tack-Free Time-50% RH: 55 Minutes Typical Properties Adhesion to: Glass, Nylon 6/6 Color: Clear, Grey Dielectric Constant at 100 Hz: 2.83 Dielectric Constant at 100 kHz: 2.83 Dielectric Strength: 500 volts per mil v/mil Dissipation Factor at 100 Hz: <0.001 Durometer - Shore A: 45 Elongation: 660% Linear CTE: 370 µm/m/Deg C Nonflowable: Yes Shelf Life: 360 Days Specific Gravity: 1.1 @ 25°C Tensile Strength: 940 psi Volume Resistivity: 4.4e+014 Ω·cm ## Features - DOWSIL 3145 RTV, 305ml 10.3oz one Bottle. Clear. One-part, moisture RTV, non-flow, high strength, Adhesive Sealant. Sealing, Assembly of components on PWBs, Electrical use - Color: Clear. Dielectric Constant at 100 Hz: 2.83. Dielectric Strength: 500 volts per mil v/mil. Dissipation Factor at 100 Hz: < 0.001. Durometer - Shore A: 45. Elongation: 660% Linear CTE: 370 µm/m/Deg C. Specific Gravity: 1.1 @ 25°C. Tensile Strength: 940 psi. Volume Resistivity: 4.4e+014 Ω·cm. - Sealing. Battery Pack, Boards and Assemblies, Components, Housings. Electrical Use. PWBs - Non-flowing. High tensile strength and elongation. Enhanced thermal stability. Water Resistant. Non-Slump. Primerless Adhesion. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DHGTZR7D | | Best Sellers Rank | #479,111 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,377 in Hardware Sealers | | Brand | SANYI | | Brand Name | SANYI | | Color | Clear | | Customer Reviews | 1.0 out of 5 stars 1 Review | | Manufacturer | Dowsil | | Model | Dowsil 3145 305ml Clear | | Number of Packs | 1 | | Part Number | Dowsil 3145 | | Style | Industrial | | Style Name | Industrial | | Unit Count | 10.3 Ounce | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** SANYI - **Item Form:** Paste - **Material:** Silicone - **Style:** Industrial - **Water Resistance Level:** Water Resistant ## Images ![Dowsil 3145 RTV 305ml 10.3oz Clear Adhesive Sealant Mil-A-46146 Electrical Battery Board Housing Moisture Sealing Non Flow Primerless Adhesion High Strength Group II/III - Image 1](https://m.media-amazon.com/images/I/61EQO3wTN5L.jpg) ![Dowsil 3145 RTV 305ml 10.3oz Clear Adhesive Sealant Mil-A-46146 Electrical Battery Board Housing Moisture Sealing Non Flow Primerless Adhesion High Strength Group II/III - Image 2](https://m.media-amazon.com/images/I/61r8pj2UBEL.jpg) ![Dowsil 3145 RTV 305ml 10.3oz Clear Adhesive Sealant Mil-A-46146 Electrical Battery Board Housing Moisture Sealing Non Flow Primerless Adhesion High Strength Group II/III - Image 3](https://m.media-amazon.com/images/I/61mR8XASBrL.jpg) ![Dowsil 3145 RTV 305ml 10.3oz Clear Adhesive Sealant Mil-A-46146 Electrical Battery Board Housing Moisture Sealing Non Flow Primerless Adhesion High Strength Group II/III - Image 4](https://m.media-amazon.com/images/I/61ShA6-NUSL.jpg) ![Dowsil 3145 RTV 305ml 10.3oz Clear Adhesive Sealant Mil-A-46146 Electrical Battery Board Housing Moisture Sealing Non Flow Primerless Adhesion High Strength Group II/III - Image 5](https://m.media-amazon.com/images/I/61atxKFgPEL.jpg) ## Frequently Bought Together - Dowsil 3145 RTV 305ml 10.3oz Clear Adhesive Sealant Mil-A-46146 Electrical Battery Board Housing Moisture Sealing Non Flow Primerless Adhesion High Strength Group II/III - Molykote DOW 111 Lubricant & Sealant, 5.3 oz. Tube - Dow Corning-3145 DC Clear, 3OZ Adhesive, Clear --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/658293201-dowsil-3145-rtv-305ml-10-3oz-clear-adhesive-sealant-mil](https://www.desertcart.jp/products/658293201-dowsil-3145-rtv-305ml-10-3oz-clear-adhesive-sealant-mil) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-18*