DOWSIL 3-0115 Automotive Sealant
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
- Automotive Powertrain-Fluid Resistance
- Blowout-Resistant In-Line Leak Testing
- Primerless Metal and Plastic Adhesion
Product Description
DOWSIL™ 3-0115 Automotive Sealant is a one-part, self-priming, noncorrosive alkoxy-cure RTV silicone rubber developed for automotive powertrain sealing. Supplied as a high-viscosity, nonslumping paste, it forms an elastomeric seal resistant to most automotive powertrain fluids and is formulated to withstand in-line pressure leak testing during assembly. The sealant exhibits excellent unprimed adhesion to properly prepared metals and many plastics, while its low oil-foaming behavior supports use with automatic transmission fluids and engine oils. These characteristics make it suitable for automotive flange sealing across engine, transmission, axle, and coolant-system assemblies, subject to application-specific process validation and qualification.
Key features
- One-part alkoxy-cure RTV system - Self-priming, noncorrosive silicone rubber that cures through exposure to atmospheric moisture.
- Powertrain fluid resistance - Forms an elastomeric seal resistant to most automotive powertrain fluids.
- Blowout resistance - Formulated to withstand in-line pressure leak testing during assembly operations.
- Unprimed adhesion - Exhibits excellent adhesion to properly prepared metals and many plastics.
- Low oil foaming - Provides low-foaming behavior in contact with automatic transmission fluids and engine oils.
- Nonslumping paste consistency - High-viscosity paste suitable for manual application or automated dispensing.
- Low-odor formulation - Supports automotive sealing operations where material odor is a processing consideration.
Applications / Suitable for
- Automotive flange sealing
- Assemblies requiring immediate pressure leak testing
- Engine and transmission oil pan sealing
- Differential and axle cover sealing
- Coolant-system sealing
- Engine block main seals
Technical Specifications
General Properties
Mechanical Properties
Additional Information
DOWSIL 3-0115 Automotive Sealant
DOWSIL 3-0115 Automotive Sealant is a one-part, self-priming, noncorrosive alkoxy-cure RTV silicone rubber for automotive powertrain sealing. Its high-viscosity, nonslumping paste is formulated for fluid-resistant elastomeric sealing and in-line pressure leak testing, with excellent unprimed adhesion to properly prepared metals and many plastics and low oil-foaming behavior in transmission fluids and engine oils.
Typical as-supplied properties
Values are typical and are not intended for use in preparing specifications. Unless otherwise indicated, conditions are 23 deg C (73 deg F) and 50% relative humidity. CTMs are Corporate Test Methods and correspond to standard ASTM tests in most instances.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Consistency | High-viscosity, nonslumping paste | - | CTM 0176; 23 deg C (73 deg F), 50% relative humidity |
| Color | Gray | - | CTM 0063; 23 deg C (73 deg F), 50% relative humidity |
| Extrusion rate | 50 | g/minute | CTM 0364; 3.2-mm (1/8-inch) nozzle at 0.63 MPa (90 psi) |
| Skin-over time | 10 | minutes | CTM 0098; 23 deg C (73 deg F), 50% relative humidity |
| Tack-free time | 20-25 | minutes | CTM 0095; 23 deg C (73 deg F), 50% relative humidity |
| Cure rate, 3.2 mm (1/8 inch) | 24 | hours | CTM 0084; 23 deg C (73 deg F), 50% relative humidity |
| Specific gravity | 1.29 | - | CTM 0097; 23 deg C (73 deg F), 50% relative humidity |
| Volatility | 0.3 | % | CTM 0087; 23 deg C (73 deg F), 50% relative humidity |
Application and cure
DOWSIL 3-0115 is a one-part moisture-cure RTV sealant. Surface condition, bead geometry, ambient humidity, exposed area, and assembly timing affect application and cure behavior.
Typical cured properties
Values apply after curing for 7 days at 23 deg C (73 deg F) and 50% relative humidity. These are typical test results, not guaranteed design values.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Durometer, Shore A | 50 | - | ASTM D2240; after 7 days cure at 23 deg C (73 deg F), 50% relative humidity |
| Tensile strength | 2.80 (405) | MPa (psi) | ASTM D412; after 7 days cure at 23 deg C (73 deg F), 50% relative humidity |
| Elongation | 375 | % | ASTM D412; after 7 days cure at 23 deg C (73 deg F), 50% relative humidity |
| Lap shear adhesion, 2024 aluminum | 2.4 (350) | MPa (psi) | ASTM D816; 12.7 x 25.4 x 1 mm (0.5 x 1 x 0.040 inch); after 7 days cure at 23 deg C, 50% relative humidity |
| Lap shear adhesion, 1010 steel | 2.3 (330) | MPa (psi) | ASTM D816; 12.7 x 25.4 x 1 mm (0.5 x 1 x 0.040 inch); after 7 days cure at 23 deg C, 50% relative humidity |
Automotive sealing applications
DOWSIL 3-0115 is positioned for automotive powertrain sealing, with exact-product application support across flange, oil, axle, coolant, and related sealing contexts.
Application and selection resources
Use these supporting resources to review exact-product information, documented application contexts, and Dow vehicle-system selection guidance.
Evaluate DOWSIL 3-0115 for your sealing process
Krayden can help review flange geometry, substrate preparation, bead and dispensing considerations, assembly timing, cure conditions, and the fluid or leak-test requirements relevant to evaluating DOWSIL 3-0115 Automotive Sealant. Contact us to discuss application fit, technical data, sampling, or qualification planning for your automotive sealing process.
