LOCTITE SI 596
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Enhances Load Bearing
- Reduced-Migration Sealing Formulation
- Good Temperature Resistance
Product Description
LOCTITE® SI 595 is a one-component, room-temperature vulcanizing (RTV) acetoxy silicone sealant formulated to provide flexible, durable sealing and bonding for mechanical assemblies. Upon exposure to atmospheric moisture, it cures into a tough silicone rubber seal that resists aging, weathering, UV exposure, ozone, and thermal cycling without shrinking, cracking, or hardening. The clear silicone formulation offers excellent adhesion to most substrates and is commonly used for electrical insulation, trim bonding, and sealing applications involving ducts, vents, flues, doors, and windows.
Key Features & Benefits
- One-component RTV acetoxy silicone sealant.
- Clear appearance for discreet sealing applications.
- Superior adhesion and flexibility.
- Non-slumping thixotropic formulation.
- Seals out moisture and contaminants.
- Fills large seams and gaps.
- Resistant to UV light, ozone, and thermal cycling.
- NSF 51 certified and UL recognized.
Recommended Applications
- Electrical insulation.
- Lead and wire protection from mechanical shock.
- Trim bonding.
- Duct, vent and flue sealing.
- Door and window sealing.
- General-purpose mechanical assembly sealing.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-Supplied / Before-Processing Properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Technology | Silicone | — | RTV sealant |
| Chemical Type | Acetoxy Silicone | — | Moisture-curing system |
| Appearance | Clear | — | Uncured material |
| Components | One Component | — | No mixing required |
| Viscosity | Thixotropic Paste | — | Non-slumping |
| Odor | Acetic Acid | — | Characteristic cure odor |
| Specific Gravity | 1.01 | — | 25°C |
| Extrusion Rate | 350 - 750 | g/min | Typical |
| Tack-Free Time | ≤45 | minutes | Surface cure |
After-Processing / Final-State Properties
| Property | Value | Unit | Condition / Method |
|---|---|---|---|
| Full Cure Time | 24 | hours | Ambient moisture cure |
| Tensile Strength | ≥0.8 | N/mm² | ISO 37, cured 1 week |
| Elongation at Break | ≥275 | % | ISO 37 |
| Shore Hardness | ≥14 | Shore A | ISO 868 |
| Environmental Resistance | Excellent | — | Resists weathering and aging |
| Thermal Cycling Resistance | Excellent | — | No hardening, shrinking or cracking |
| UV Resistance | Excellent | — | Outdoor sealing applications |
| Ozone Resistance | Excellent | — | Long-term durability |
| Food Equipment Compliance | ANSI/NSF 51 | — | For food equipment applications up to 204°C |
