Loctite 596 Superflex RTV Silicone Sealant, Red, 80ml, 80ml
Available
Loctite 596 Superflex is a one-component, red, thixotropic acetoxy silicone. It is a moisture-curing RTV sealant and adhesive.
It suits gasketing and sealing in plant maintenance and original equipment manufacturers, and as a sealant and adhesive for industrial furnaces, ovens, boilers, exhaust stacks, high temperature ducting and heating elements in electrical appliances. It is typically used in applications up to 315 °C.
Where this product is used
- Industrial furnaces, ovens and boilers
- Exhaust stacks and high temperature ducting
- Heating elements in electrical appliances
- Automotive valve covers, rocker covers and oil pans
- Water pumps, end seals, intake manifolds and rear axle housings
Features
- One component, no mixing, acetoxy RTV silicone
- Red, homogeneous, thixotropic paste
- Typically used in applications up to 315 °C
- Tack free in about 1 hour and fully cured in about 24 hours, depending on temperature, humidity and gap
- Peel strength of 1.73 N/mm or more on aluminium and steel (180 degree, 14 days at 25 °C)
- Formulated to meet low silicone volatiles requirements for 315 °C automotive flange sealants
- Heat-ageing data at 204 °C, 260 °C and 316 °C
Key specifications
| Specification | Detail |
|---|---|
| Brand | Loctite |
| Chemical type | Acetoxy silicone |
| Colour | Red, homogeneous, thixotropic paste |
| Cure | One component, RTV (moisture cure); tack free about 1 hour, full cure about 24 hours |
| Extrusion rate (Semco cartridge, 0.62 MPa, 15 s, 25 °C) | 250g/min or more |
| Hardness (Shore A, 7 days, 25 °C, 50% RH) | 18 or more |
| Elongation (7 days, 25 °C, 50% RH) | 300% or more |
| Tensile strength (7 days, 25 °C, 50% RH) | 1.5 N/mm² or more (217 psi) |
| Peel strength (180 degree, 14 days at 25 °C) | 1.73 N/mm or more on aluminium and steel |
| Heat ageing (tested at 22 °C) | 204 °C, 8 weeks: Shore A 22, 500% elongation. 260 °C, 7 weeks: Shore A 17, 210% elongation. 316 °C, 3 weeks: Shore A 82, 25% elongation |
| Storage | 8 °C to 21 °C, unopened, dry |
Choosing the right option
For oxime silicones see Loctite 587 Blue Maxx Silicone Flange Sealant 300ml (blue) and Loctite 598 Black RTV Silicone Gasket Maker 95g (black), and for a copper-coloured, non-corrosive silicone see Loctite 5920 Copper Maxx Silicone 85g. Compare the temperature statements on each data sheet before choosing.
See also: Loctite 587 Blue Maxx Silicone Flange Sealant 300ml, Loctite 598 Black RTV Silicone Gasket Maker 95g, Loctite 5920 Copper Maxx Silicone 85g, Loctite SI 5699 Grey RTV Silicone Gasket Maker.
| Option | Part number | SKU |
|---|---|---|
| 80ml | 596-80ML-LOC | A0049873 |
| 300ml | 596-300ML-LOC | A0049924 |
Using it
Tack free in about 1 hour and fully cured in about 24 hours; both vary with temperature, humidity and gap.
Heat-ageing results, tested at 22 °C: after 8 weeks at 204 °C, Shore A 22 and 500% elongation; after 7 weeks at 260 °C, Shore A 17, 210% elongation and tensile strength 0.3 N/mm²; after 3 weeks at 316 °C, Shore A 82 and 25% elongation. Check these against your operating temperature and service life.
Hardness, elongation and tensile strength on the data sheet are measured after 7 days at 25 °C and 50% RH. Peel strength is measured after 14 days at 25 °C.
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 gasketing carburettors or fuel control devices in constant contact with hydrocarbon fuels, where it swells and loses properties. Not for pure oxygen or oxygen-rich systems, or as a sealant for chlorine or other strong oxidisers.
Not at the top of the range.
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Loctite 596 Superflex RTV High Temperature Silicone Sealant Red: 80ml
SKU: A0049873 | Model: 596-80ML-LOC
Loctite 596 Superflex red acetoxy RTV silicone sealant, 80ml. Typically used up to 315 °C.