Supex 569 FL Silicone Potting Compound

Supex 569FL Flowable RTV Silicone Sealant – Self-Leveling Potting Compound

Supex 569FL delivers exceptional performance as a flowable RTV silicone sealant. Professionals choose this product for its self-leveling properties. It matches or exceeds RTV 3140 standards. This one-part sealant cures at room temperature through moisture. As a result, it forms a tough, flexible silicone rubber. Users rely on it for potting, encapsulating, and sealing tasks. Moreover, it withstands high temperatures up to 320°C for short periods. Therefore, industries across India trust Supex 569FL for reliable, cost-effective solutions.

What is Flowable RTV Silicone? Benefits & Uses

Flowable RTV silicone is a one-part, moisture-curing room-temperature vulcanizing (RTV) silicone sealant that starts as a low-viscosity, liquid-like material. It self-levels easily during application and cures at room temperature upon exposure to atmospheric moisture, forming a tough, flexible, rubber-like seal.

Key benefits include excellent flowability for filling fine gaps/joints, self-leveling properties, strong adhesion to substrates like metals/glass/plastics, wide temperature resistance (often -65°C to +180–320°C), superior dielectric/electrical insulation, weather/UV/chemical resistance, and vibration/shock absorption without cracking or shrinking.

Common uses encompass electronics potting/encapsulation, sealing cable entries/connectors, automotive gasketing, industrial bonding/repairs, fine-joint waterproofing, and high-temp applications in filters or assemblies

Technical Specifications of Supex 569FL 

• Chemistry: Oxime-based, one-part moisture-curing RTV silicone.
• Cure System: Neutral/oxime (moisture cure at room temperature).
• Viscosity: Flowable / low viscosity for easy dispensing and self-leveling.
• Specific Gravity: 1.2 (measured via Gardner Cup).
• Colors: White, black, gray (standard); custom colors available on request.
• Tack-Free Time: ≤ 35 minutes (typically under 35 min).
• Skin Time: Fast skin formation in 10–15 minutes.
• Hardness: 40 ± 5 Shore A (after 72 hours cure at 25°C / 50% RH).
• Elongation at Break: ≥ 150% (after 72 hours cure at 25°C / 50% RH).
• Tensile Strength: ≥ 1.5 MPa (after 72 hours cure at 25°C / 50% RH).
• Temperature Resistance: Up to 320°C intermittently / short-term (high-temperature resistant).
• Shelf Life: > 360 days (over 12 months) when stored in a cool, dry place.
• Additional Properties: 100% waterproof and oil-resistant after curing; excellent electrical/dielectric insulation; flexible to absorb shocks/vibrations; strong adhesion to metals, glass, plastics, ceramics (often primerless); low odor; low VOC; REACH compliant.

Benefits for Professionals and Industries

Supex 569FL saves money without compromising quality. It serves as a direct, high-performance alternative to RTV 3140. Users enjoy better value and local availability in India. Fast curing reduces project downtime. Consistent results build confidence in every application.

This flowable RTV maintains flexibility over time. It resists cracking under thermal expansion or vibration. Waterproof and oil-resistant properties ensure long-term reliability. Low VOC and REACH compliance make it environmentally friendly. ISO-certified manufacturing guarantees top standards.

Easy Application and Usage Tips

Preparation matters for best results. Clean surfaces thoroughly. Remove dust, oil, and contaminants. Apply the flowable rtv sealant quickly once exposed to air. Assemble parts within minutes. Full curing develops in 24 hours.

Excess uncured material wipes away easily. After curing, trim carefully with a blade. No special equipment needed. Cartridge or bulk packaging suits various needs.

Why Supex 569FL Outperforms Expectations

Many sealants fail in high-heat or wet conditions. Supex 569FL thrives there. Its flowable nature fills gaps completely. Self-leveling action prevents air pockets. Strong multi-surface adhesion eliminates weak points.

Compared to standard RTV options, it offers superior temperature tolerance. Electrical insulation protects sensitive electronics reliably. Professionals report fewer failures over time. This durability translates to cost savings and peace of mind.

Flowable RTV Silicone vs Standard RTV Silicone

• Viscosity / Consistency Flowable RTV: Low viscosity, liquid-like, self-leveling (flows easily into gaps, voids, or fine joints). Standard RTV: Higher viscosity, paste-like or non-sag (thixotropic; stays in place when applied, like caulk).
• Application Method Flowable RTV: Pours, dispenses easily, self-levels for potting/encapsulation; ideal for filling complex shapes without tooling. Standard RTV: Applied with caulking gun/bead; requires smoothing/tooling for even coverage.
• Ease of Use & Cleanup Flowable RTV: Beginner-friendly, easier to apply evenly, less mess, simpler cleanup of excess. Standard RTV: Can be messier (stickier residues), harder to achieve bubble-free fill in tight areas.
• Primary Uses Flowable RTV: Electronics potting/encapsulation, conformal coatings, sealing fine gaps/connectors, automotive/electrical insulation where flow into crevices is needed. Standard RTV: General sealing/gasketing, bonding large surfaces, automotive engine seals, construction joints, where non-sag hold is required.
• Curing & Flow Behavior Flowable RTV: Excellent flow during application, then cures to flexible rubber; self-levels to minimize air bubbles. Standard RTV: Minimal flow (non-sag grades resist slumping); cures in place without significant leveling.
• Adhesion & Performance Both: Strong adhesion to metals, glass, plastics; excellent temperature resistance, weather/UV/chemical resistance, flexibility. Flowable RTV: Often optimized for electrical insulation/dielectric properties and stress relief in potting. Standard RTV: May offer higher initial tack or mechanical strength in some formulations for structural bonding.
• Drawbacks Flowable RTV: May require containment to prevent over-spill in open areas; potentially lower “grip” in some non-potted uses. Standard RTV: Harder to fill irregular/vertical gaps without voids; more effort for uniform application in potting.

In summary, choose flowable RTV for applications needing penetration and self-leveling (e.g., electronics protection), and standard RTV for bead/seal applications where shape retention matters.

Shop Supex 569FL now and seal with confidence! Contact us today for technical datasheets, pricing, free samples, or expert advice. Make the smart switch from RTV 3140  – order your Supex 569FL today and experience the difference!