Part no. (SKU/IDH):
2061029
IDH Name:
LOCTITE SI 598 BK CR300ML EN/DE/IT/PL
Gasketing sealants
Black, flexible, RTV silicone sealant with excellent engine-oil resistance
Pasty, 1-part, silicone adhesive sealant, which cures at room temperature to form a tough, flexible rubber gasket with excellent oil resistance.
Part no. (SKU/IDH):
2061029
IDH Name:
LOCTITE SI 598 BK CR300ML EN/DE/IT/PL
All marks used are trademarks and/or registered trademarks of Henkel and its affiliates in the US, Germany, and elsewhere.
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- Description
- Technical specification
LOCTITE® SI 598 is a metallic black, 1-part, room temperature vulcanizing (RTV) oxime silicone paste sealant. It cures at room temperature on exposure to moisture in the air to form a tough, flexible, silicone rubber gasket. Its thixotropic nature allows for easy flow dispensing while preventing the migration of liquid product once applied to the part. It has excellent resistance to engine oils and can withstand operating temperatures from -54°C to 260°C (-65°F to 500°F). It resists aging, weathering, and thermal cycling without hardening, shrinking or cracking.
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Excellent engine oil resistance
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Forms a tough, flexible, silicone-rubber gasket
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Ideal for oil pans, transmission pans, valves and guides, differential covers
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Room-temperature vulcanizing (RTV) cure
- Product category:
- Gasketing sealants
Technologies:
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Silicones, speciality
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Silicones, oxime
- Colour:
- Black
- Cure type:
- Room temperature vulcanization (RTV) cure
- Fixture time:
- 30.0 min.
- Physical form:
- Paste
- Storage temperature:
- 8.0 °C - 21.0 °C
How to use
It is recommended to use LOCTITE® cleaners such as TEROSON® SB 450, to degrease and clean surfaces prior to applying the adhesive. TEROSON® SB 450 is used for cleaning and can improve adhesion of elastic adhesives and sealants on metals, plastics and coated surfaces.
Use supplied nozzle and, where appropriate, cut the end to give the desired bead size. Dispense adhesive bead(s) directly onto the surface to be bonded or sealed; parts should be assembled immediately to prevent partial curing and shimming. Prevent the assembled parts from moving during cure. For large areas where both substrates are non-water vapour transmitting (porous), do not cover complete bonding area with product and allow some gaps for moisture to penetrate the bond line. Any gaps can be filled once the adhesive bulk has cured.
Hold the nozzle at a 45° angle and pull towards yourself. Test on a piece of scrap to find the right speed that gives the bead size you need. Once the surfaces are mated, wipe away uncured excess product with a gloved finger or finishing tool. After use, leave the nozzle in place and use it as a cap.
FAQ
The operating temperature range for standard Loctite anaerobic threadlockers / thread sealants / gasketing adhesives is -55°C to +150°C. High-performance anaerobic grades, or alternative technologies such as silicones, can offer significantly improved temperature resistance depending on the specific application requirements. Consult Henkel's online product resources or contact our technical teams for further information .
All adhesives are compatible with metal substrates although bond strength and durability will vary depending on the technology selected. Anaerobic adhesives may cause stress-cracking in some sensitive polymers and therefore should generally be avoided on plastic parts. Consult Henkel technical teams for further advice as needed.
For flange sealing applications, anaerobic adhesives are preferable when high strength is required (usually for rigid machined parts rather than pressed/flexible flanges); when high chemical/solvent resistance is required; and on metal components where there is limited moisture or exposure to the environment. Silicones are recommended where there are large gaps, open/exposed bond areas, or when high flexibility or extremely high temperature resistance (generally in excess of 150°C) is required.
Both silicones and SMP adhesives provide excellent flexibility and gap-filling properties together with high adhesion to a wide range of substrates, making them ideal for elastic bonding & sealing applications. Silicones have superior thermal resistance for high-temperature applications, whereas SMP adhesives are suitable for applications that require over-painting. There are a range of properties available for each technology type. Please speak with a Henkel representative regarding your application to determine the best available grade.
LOCTITE® silicone adhesives can be used for such applications. High temperature resistance is a necessity and materials like LOCTITE® SI 5920 or LOCTITE® SI 5990 can be considered.
All necessary H&S measures and PPE (personal protection equipment) requirements can be found on the product material safety data sheet, all of which are available via the Henkel website.
Henkel has a number of products available with varying levels of NSF® and WRAS® approval, amongst others. Please contact the Henkel sales or technical teams with your requirements.
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