Loctite 5920 Copper Maxx Silicone 85g
Available
Loctite 5920 is a one-component, copper-coloured, moisture-curing, non-corrosive silicone. It cures at room temperature (RTV) and is thixotropic, so the liquid product shows reduced migration.
It suits gasketing and sealing where excellent temperature resistance is required, and for electrical insulating applications. It is typically used in applications up to 350 °C. This is the 85g pack.
Where this product is used
- Gasketing and sealing where excellent temperature resistance is required
- High temperature sealing, typically used in applications up to 350 °C
- Electrical insulating applications (volume resistivity data is in the data sheet)
- Sealing where a non-corrosive silicone is wanted
Features
- One component, no mixing
- Copper-coloured thixotropic paste with reduced migration of liquid product
- Moisture-curing, non-corrosive silicone
- Room temperature vulcanising (RTV) cure
- Skin-over in 20 minutes, tack-free in 20 to 60 minutes at 22 °C and 50% RH
- Elongation of 350% or more once cured (ISO 37)
- Electrically insulating: volume resistivity 5.5 x 10^15 ohm·cm
Key specifications
| Specification | Detail |
|---|---|
| Brand | Loctite |
| Chemical type | Silicone, moisture-curing, non-corrosive |
| Colour | Copper-coloured paste (uncured) |
| Cure | One component, room temperature vulcanising (RTV) |
| Specific gravity (22 °C) | 1.05 |
| Skin-over time | 20 minutes |
| Tack-free time (22 °C, 50 ± 5% RH) | 20 to 60 minutes |
| Hardness (ISO 868 Shore A, 7 days, 25 °C, 50% RH) | 23 to 38 |
| Elongation (ISO 37, 7 days, 25 °C, 50% RH) | 350% or more |
| Tensile strength (ISO 37, 7 days, 25 °C, 50% RH) | 1.4 N/mm² or more |
| Volume resistivity (IEC 60093, cured 21 days at 22 °C, 50% RH) | 5.5 x 10^15 ohm·cm |
| Storage | 8 °C to 21 °C, unopened, dry |
Choosing the right option
For a red acetoxy silicone for high temperature sealing see Loctite 596 Superflex RTV High Temperature Silicone Sealant Red. For oxime silicones see Loctite 587 Blue Maxx Silicone Flange Sealant 300ml (blue) and Loctite 598 Black RTV Silicone Gasket Maker 95g (black). Compare the temperature statements on each data sheet before choosing.
See also: Loctite 596 Superflex RTV High Temperature Silicone Sealant Red, Loctite 587 Blue Maxx Silicone Flange Sealant 300ml, Loctite 598 Black RTV Silicone Gasket Maker 95g, Loctite SI 5699 Grey RTV Silicone Gasket Maker.
Using it
Skin-over time is 20 minutes and tack-free time is 20 to 60 minutes at 22 °C and 50 ± 5% RH. Allow the bond to cure (for example seven days) before heavy service loads.
Lap shear was tested at a 0.55mm gap after 21 days at 22 °C and 50% RH: e-coated steel 1.3 N/mm², grit-blasted mild steel 0.65 N/mm², brass and ABS 0.1 N/mm². These are test conditions, not a gap-fill rating.
It is not recommended for contact with gasoline, or for pure oxygen or chlorine and strong oxidiser systems.
Storage and handling
Store unopened in a dry location, optimally between 8 °C and 21 °C. Storage below 8 °C or above 28 °C can adversely affect the properties of the product.
Limits and safety
Not recommended for contact with gasoline, for pure oxygen or oxygen-rich systems, or as a sealant for chlorine or other strong oxidising materials. Read the safety data sheet before use.
Lap shear was tested at a 0.55mm gap, which is a test condition and not a capability rating.
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Loctite 5920 Copper Maxx Silicone 85g
SKU: A0049954 | Model: 5920-85G-LOC
Loctite 5920-85G-LOC: loctite 5920 copper RTV silicone for high temperature sealing. Size: 85g. Type: High temperature RTV silicone.