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1 Introduction
Oil bleeding jelly gel cause solution. Hong Ye HY-9400 has become a benchmark grade for cleanroom and apparel customers who have seen oily residue from competitor gels. Oil bleed is caused by low molecular weight siloxanes in cheap formulations; HY-9400 uses a refined polymer network with volatility below 0.1 percent. As a two-component addition-cure platinum jelly gel mixed 1:1 by weight, HY-9400 offers a viscosity of 1200+/-300 mPa.s, 20 to 40 minute operation time and 4 to 6 hour room temperature cure. It self-levels after pouring without vacuum degassing, and cures into a permanently soft, tacky, jelly-like mass that remains serviceable across a temperature range of -60 to 200 degrees Celsius. The cured gel resists ozone, UV, moisture, salt spray and common cleanroom disinfectants, with linear shrinkage below 0.1 percent and dielectric strength above 20 kV/mm.
This technical analysis examines the material properties, installation methodology and field performance of HY-9400 blue jelly gel as used in this application area. Engineers and procurement managers will find actionable data on viscosity, cure schedule, penetration and chemical compatibility to support specification decisions.
2 Product Requirements
In this application, the gel sealant must meet the following requirements:
• Permanent tack and self-healing: remain soft and adhesive throughout service life, re-sealing after module replacement without re-pouring.
• Self-leveling viscosity of 1200-2000 mPa·s allows the gel to flow into narrow channels and corners without vacuum assistance.
• Wide service temperature range of -60°C to 200°C ensures reliable performance in outdoor and industrial environments.
• Low shrinkage below 0.1% with no condensation by-products eliminates voids, odor and corrosion risks.
• Strong electrical insulation: dielectric strength above 20 kV/mm and volume resistivity above 10^14 Ω·cm.
• Chemical resistance against ozone, UV radiation, moisture, salt spray and common disinfectants.
• Regulatory compliance: RoHS 2.0 and REACH SVHC as baseline; FDA 21 CFR 177.2600 and LFGB available for food-grade or skin-contact grades.
3. Grade Selection Guide
| Model | Color | Penetration (0.1mm) | Tack | Typical Applications |
| HY-9400 | Blue | 200 | High | HEPA/ULPA filter gel channels, biosafety cabinet seals, applications requiring strong adhesion and re-sealability |
| HY-9405 | Blue | 170 | Medium | Electronic potting, sensor encapsulation, applications balancing softness and dimensional stability |
| HY-9409 | Transparent | 150 | Low | Transparent gel pads, intimate apparel, prosthetic devices, applications requiring visual clarity or easy repositioning |
| Parameter | Value |
| Product Type | Two-component addition-cure platinum-catalyzed silicone jelly gel (RTV-2) |
| Mixing Ratio | Part A : Part B = 1 : 1 by weight |
| Cure System | Platinum addition cure, no condensation by-products |
| Viscosity (mixed) | 1200-2000 mPa·s depending on grade |
| Cone Penetration | 150-200 (1/10 mm) |
| Working Time | 20-40 minutes at 25°C |
| Cure Time | 4-6 h at 25°C; 30-60 min at 60-80°C |
| Operating Temp | 18-35°C recommended for pouring |
| Service Temp | -60°C to 200°C continuous |
| Linear Shrinkage | <0.1% |
| Dielectric Strength | >20 kV/mm |
| Volume Resistivity | >1×10^14 Ω·cm |
| Thermal Conductivity | 0.18-0.22 W/(m·K) |
| Self-Leveling | Yes, no vacuum degassing required |
| Self-Healing | Yes |
| Shelf Life | 12 months sealed below 25°C |
| Packaging | 1kg, 5kg, 20kg, 25kg, 200kg kits (A+B) |
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