Gasket Sealant
LOCTITE® 515
Product category: Gasketing sealants
Data sheets
- Description
- Technical specifications
LOCTITE® 515 is a medium strength (6 N/mm² tensile shear strength), medium cure speed, methacrylate-based industrial gasketing product designed for machined, rigid metal flanges. The product, which cures anaerobically, is suitable for gaps up to 0.25 mm. It is used typically as a form-in-place product for pumps, thermostats, compressors, transmission housings and axle covers.
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Ideal for machined metal components
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Perfect seal between components
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For gaps up to 0.25 mm
Application method:
Dispense System,Manual
Applications:
Rigid Assembly Gasketing,Sealing
Chemical basis / base:
Methacrylate
Color:
Purple
Cure type:
Anaerobic Cure
Fixture time:
30.0 min.
Gap fill:
0.25 mm
Key characteristics:
Fluorescent,For machined, rigid flanges,Strength: Medium Strength,Thixotropic
Lab shear strength:
6.0 N/mm²
Physical form:
Gel
Recommended for use with:
Metal: Aluminum,Metal: Steel
Viscosity, Brookfield - HBT, @ 25.0 °C:
700000.0 mPa·s (cP) - 1700000.0 mPa·s (cP)
Viscosity, Brookfield - HBT, @ 25.0 °C:
150000.0 mPa·s (cP) - 375000.0 mPa·s (cP)
How to use
Apply LOCTITE® SF 790™ to old gasket or gasket sealants and use a wood or plastic scraper to remove residues from flange surfaces. Remove burrs. It is recommended to use LOCTITE® SF 7070™ to degrease and clean surfaces prior to applying the sealant.
If cure speed of LOCTITE® 515™ is too slow due to passive metals or low temperature (below 5°C), use LOCTITE® SF 7649™ activator. Allow to dry.
Apply a continuous bead of sealant onto one flange surface. Place the bead close to the inner rim of the flange and encircle all bolt holes. Small surface scratches will be filled by the adhesive. LOCTITE® 515™ can also be applied by roller onto larger flanges.
Assemble flanges and tighten bolts as soon as possible. Wipe away any excess squeeze-out, as this will not cure when exposed to air due to the sealant's anaerobic curing properties.
Disassemble bolts with standard hand tools. Use jacking-screws, cast-on bosses or recesses to lift flanges apart.
Once disassembled, apply LOCTITE® SF 790™ on old sealant and use a wood or plastic scraper to remove residues from flange surfaces.
FAQ
Use a LOCTITE® gasketing adhesive (silicone or anaerobic depending on your application) to: completely fill voids and surface variations; replace or augment traditional gaskets; overcome typical issues of over-torqueing bolts and gasket relaxation; as well as reducing inventory with a ‘one size fits all’ solution.
Yes, Henkel anaerobic adhesives become highly resistant thermoset polymers once cured, making them suitable for a vast number of applications. Consult the online product resources or contact our technical teams for further information.
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 such as LOCTITE® SI 5920™ or LOCTITE® SI 5699™ have been specially formulated for high temperature engine sealing applications. However due to the very high temperatures generated in the combustion chamber care should be taken when specifying liquid gasketing materials around the cylinder head or exhaust manifold. Please consult the Henkel technical team for further advice where necessary.
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 our website.
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