MG Chemicals RTV103-85mL | Black Silicone Sealant | FDA Approved | 85ml Tube
MG Chemicals RTV103-85mL | Black Silicone Sealant | FDA Approved | 85ml Tube
⚠️ Please Note: RTV products are not stocked. Please call MTE Solutions at 651-600-3838 for current pricing and lead times before ordering.
MG Chemicals RTV103-85mL is a one-component, black silicone sealant in an 85ml tube. RTV103 is a Momentive Performance Materials formulation used for sealing, caulking, insulating, bonding, and formed-in-place gasketing. It cures to a tough, durable, resilient rubber on exposure to atmospheric moisture at room temperature. FDA-approved silicone — suitable for food-contact adjacent applications. Acetoxy cure chemistry (releases acetic acid during cure). The black color makes it ideal for black housing, enclosure, and industrial applications where a neutral or white sealant would be visually prominent.
For higher-volume production use, see the 300ml cartridge (RTV103-300mL).
Key Specifications
| Specification | Value |
|---|---|
| Part Number | RTV103-85mL |
| Manufacturer | MG Chemicals (Momentive Performance Materials) |
| Color | Black |
| Volume | 85ml tube |
| Components | One-component (1-part) |
| Cure System | Acetoxy moisture cure (acetic acid by-product) |
| Cure Condition | Room temperature, ambient humidity |
| Max Section Depth | 6mm (1/4 in.) |
| Consistency | Standard strength paste (non-sag) |
| FDA Approved | Yes |
| Substrates | Most metals, plastics, glass; primerless adhesion |
Key Features
- Black color — aesthetically suited for dark enclosures and industrial housings — blends with black plastic, metal, and rubber components where white or clear sealant would be visually unacceptable
- FDA-approved silicone — suitable for food-contact adjacent and food processing environments
- Formed-in-place gasket (FIPG) — paste consistency conforms to mating surfaces and cures in place to form a reliable custom black silicone gasket
- Aquarium-safe — commonly used for aquarium seam repair and waterproofing once fully cured
- One-part, no mixing required — moisture-cures at room temperature with ambient humidity
- Non-sag paste — applies to vertical and overhead surfaces where pourable sealants are not practical
- Primerless adhesion — bonds to most metals, plastics, and glass without primer
- Weatherability & chemical resistance — resists ozone, UV, and many chemicals
Frequently Asked Questions
What is the difference between RTV103 (black) and RTV102 (white)?
RTV102 and RTV103 share the same Momentive acetoxy-cure RTV formulation and performance characteristics — the primary difference is color. RTV102 is white and RTV103 is black. Choose based on the color of your application: black housings, enclosures, and industrial components typically use RTV103; white or food-adjacent applications typically use RTV102. Both are FDA approved/compliant.
Can RTV103 be used for aquarium repair?
Yes — RTV103 is commonly used for aquarium seam repair. Ensure the sealant is fully cured before contact with water (typically 24 hours at room temperature) and verify the application depth is within the 6mm maximum section depth. Once cured, the silicone is waterproof and safe for aquarium use.
Is RTV103 safe for use on electronics?
RTV103 uses acetoxy cure chemistry, which releases acetic acid during curing — corrosive to copper and copper alloys. Not recommended for direct application on bare copper PCB traces or copper-alloy contacts. For copper-safe electronics use, use MG Chemicals 1035 (neutral cure, non-corrosive) instead.
Is RTV103-85mL in stock?
RTV products are not stocked items. Please call MTE Solutions at 651-600-3838 for current pricing and lead times before ordering.
What is the maximum application thickness?
RTV103 should not be applied in sections greater than 6mm (1/4 in.) due to its moisture cure system. For deeper sections, use a Momentive addition cure or two-component silicone compound instead.
