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Flexible Flange Sealant | Sold as a Case of 24 Bottles
SONLOK 3515 is a flexible, medium-strength anaerobic gasket sealant engineered for form-in-place gasketing of close-fitting metal flanges. Curing in the absence of air between metal surfaces, SONLOK 3515 develops strength quickly while remaining flexible—allowing it to accommodate minor flange movement and provide immediate low-pressure resistance after assembly.
Packaging: 50ml bottles, sold by the case of 24.
Manufactured by Parson Adhesives, SONLOK 3515 features a thixotropic, non-slump formulation that resists migration after application, ensuring clean assemblies and reliable sealing across pumps, housings, and covers where flexibility and vibration tolerance are important.
Key Features & Benefits
• Flexible anaerobic gasket sealant for metal flanges
• Medium strength with fast handling cure
• Accommodates minor flange movement and vibration
• Immediate low-pressure resistance after assembly
• Thixotropic (non-slump) formulation prevents run-off
• Excellent chemical resistance for industrial environments
Typical Applications
• Form-in-place gasketing for pumps, thermostats, compressors
• Transmission housings and axle covers
• Rigid metal flange sealing requiring flexibility
• Industrial machinery and mechanical housings
Comparable To
SONLOK 3515 is commonly used as an alternative to:
• Loctite® 515 Anaerobic Gasket Sealant by Henkel Loctite
It offers comparable flexible flange sealing, chemical resistance, and form-in-place gasketing performance.
Adhesive Properties
Composition: Dimethacrylate Ester
Color: Purple
Viscosity: 275,000 – 950,000 cps (Thixotropic) @ 25°C
(Brookfield RVT, Spindle 7 @ 20 rpm)
Specific Gravity: 1.10
Maximum Gap Filling: >0.50 mm
Flash Point: >93°C
Solvent Content: None
Curing Properties
Handling Cure Time:
• Unprimed surfaces: 1–2 hours
• Primed surfaces: 15 minutes–2 hours
Compressive Shear Strength (ISO 10123):
• After 24 hrs @ 22°C (Steel pins & collars): >5 N/mm² (>725 psi)
Lap Shear Strength (ISO 4587):
• Steel (grit blasted): 6 N/mm² (870 psi)
Tensile Strength (ISO 6922):
• Steel (grit blasted): 14 N/mm² (2,030 psi)
Service Temperature Range: −65°F to 300°F
Physical Properties
• Coefficient of Thermal Expansion: 80 × 10⁻⁶ (ASTM D696)
• Thermal Conductivity: 0.10 W/(m·K) (ASTM C177)
• Specific Heat: 0.30 kJ/(kg·K)
Chemical Resistance
(% Initial Strength Retained)
| Chemical | Temp | 500 hrs | 1000 hrs |
|---|---|---|---|
| Acetone | 22°C | 100% | 95% |
| Ethanol | 22°C | 90% | 85% |
| Motor Oil | 125°C | 160% | 165% |
| Gasoline | 22°C | 20% | 15% |
| Brake Fluid | 22°C | 95% | 95% |
| Water/Glycol | 87°C | 80% | 80% |
Application Instructions
• Clean all flange surfaces with solvent and allow to dry
• For inactive metals or slow cure, use Activator 3071 or 3049
• Apply a continuous bead manually or via screen printing to one flange surface
• Assemble promptly and tighten to specification
• Low-pressure testing may be performed immediately after assembly
Packaging & Storage
• Package Size: 50ml bottles
• Selling Unit: Case of 24 bottles
• Store unopened containers in a cool, dry place (46°F–82°F / 8°C–28°C)
• Do not return unused material to the original container
SONLOK 3515 delivers flexible, form-in-place flange sealing with excellent chemical resistance, making it a reliable alternative to Loctite 515 for pumps, housings, and mechanical assemblies—now available by the case of 24 for professional and industrial use.
- Regular price
- $264.00
Flexible Flange Sealant | Sold as a Case of 24 Bottles
SONLOK 3515 is a flexible, medium-strength anaerobic gasket sealant engineered for form-in-place gasketing of close-fitting metal flanges. Curing in the absence of air between metal surfaces, SONLOK 3515 develops strength quickly while remaining flexible—allowing it to accommodate minor flange movement and provide immediate low-pressure resistance after assembly.
Packaging: 50ml bottles, sold by the case of 24.
Manufactured by Parson Adhesives, SONLOK 3515 features a thixotropic, non-slump formulation that resists migration after application, ensuring clean assemblies and reliable sealing across pumps, housings, and covers where flexibility and vibration tolerance are important.
Key Features & Benefits
• Flexible anaerobic gasket sealant for metal flanges
• Medium strength with fast handling cure
• Accommodates minor flange movement and vibration
• Immediate low-pressure resistance after assembly
• Thixotropic (non-slump) formulation prevents run-off
• Excellent chemical resistance for industrial environments
Typical Applications
• Form-in-place gasketing for pumps, thermostats, compressors
• Transmission housings and axle covers
• Rigid metal flange sealing requiring flexibility
• Industrial machinery and mechanical housings
Comparable To
SONLOK 3515 is commonly used as an alternative to:
• Loctite® 515 Anaerobic Gasket Sealant by Henkel Loctite
It offers comparable flexible flange sealing, chemical resistance, and form-in-place gasketing performance.
Adhesive Properties
Composition: Dimethacrylate Ester
Color: Purple
Viscosity: 275,000 – 950,000 cps (Thixotropic) @ 25°C
(Brookfield RVT, Spindle 7 @ 20 rpm)
Specific Gravity: 1.10
Maximum Gap Filling: >0.50 mm
Flash Point: >93°C
Solvent Content: None
Curing Properties
Handling Cure Time:
• Unprimed surfaces: 1–2 hours
• Primed surfaces: 15 minutes–2 hours
Compressive Shear Strength (ISO 10123):
• After 24 hrs @ 22°C (Steel pins & collars): >5 N/mm² (>725 psi)
Lap Shear Strength (ISO 4587):
• Steel (grit blasted): 6 N/mm² (870 psi)
Tensile Strength (ISO 6922):
• Steel (grit blasted): 14 N/mm² (2,030 psi)
Service Temperature Range: −65°F to 300°F
Physical Properties
• Coefficient of Thermal Expansion: 80 × 10⁻⁶ (ASTM D696)
• Thermal Conductivity: 0.10 W/(m·K) (ASTM C177)
• Specific Heat: 0.30 kJ/(kg·K)
Chemical Resistance
(% Initial Strength Retained)
| Chemical | Temp | 500 hrs | 1000 hrs |
|---|---|---|---|
| Acetone | 22°C | 100% | 95% |
| Ethanol | 22°C | 90% | 85% |
| Motor Oil | 125°C | 160% | 165% |
| Gasoline | 22°C | 20% | 15% |
| Brake Fluid | 22°C | 95% | 95% |
| Water/Glycol | 87°C | 80% | 80% |
Application Instructions
• Clean all flange surfaces with solvent and allow to dry
• For inactive metals or slow cure, use Activator 3071 or 3049
• Apply a continuous bead manually or via screen printing to one flange surface
• Assemble promptly and tighten to specification
• Low-pressure testing may be performed immediately after assembly
Packaging & Storage
• Package Size: 50ml bottles
• Selling Unit: Case of 24 bottles
• Store unopened containers in a cool, dry place (46°F–82°F / 8°C–28°C)
• Do not return unused material to the original container
SONLOK 3515 delivers flexible, form-in-place flange sealing with excellent chemical resistance, making it a reliable alternative to Loctite 515 for pumps, housings, and mechanical assemblies—now available by the case of 24 for professional and industrial use.
- Regular price
- $264.00
Frequently Bought Together
Product Description
Flexible Flange Sealant | Sold as a Case of 24 Bottles
SONLOK 3515 is a flexible, medium-strength anaerobic gasket sealant engineered for form-in-place gasketing of close-fitting metal flanges. Curing in the absence of air between metal surfaces, SONLOK 3515 develops strength quickly while remaining flexible—allowing it to accommodate minor flange movement and provide immediate low-pressure resistance after assembly.
Packaging: 50ml bottles, sold by the case of 24.
Manufactured by Parson Adhesives, SONLOK 3515 features a thixotropic, non-slump formulation that resists migration after application, ensuring clean assemblies and reliable sealing across pumps, housings, and covers where flexibility and vibration tolerance are important.
Key Features & Benefits
• Flexible anaerobic gasket sealant for metal flanges
• Medium strength with fast handling cure
• Accommodates minor flange movement and vibration
• Immediate low-pressure resistance after assembly
• Thixotropic (non-slump) formulation prevents run-off
• Excellent chemical resistance for industrial environments
Typical Applications
• Form-in-place gasketing for pumps, thermostats, compressors
• Transmission housings and axle covers
• Rigid metal flange sealing requiring flexibility
• Industrial machinery and mechanical housings
Comparable To
SONLOK 3515 is commonly used as an alternative to:
• Loctite® 515 Anaerobic Gasket Sealant by Henkel Loctite
It offers comparable flexible flange sealing, chemical resistance, and form-in-place gasketing performance.
Adhesive Properties
Composition: Dimethacrylate Ester
Color: Purple
Viscosity: 275,000 – 950,000 cps (Thixotropic) @ 25°C
(Brookfield RVT, Spindle 7 @ 20 rpm)
Specific Gravity: 1.10
Maximum Gap Filling: >0.50 mm
Flash Point: >93°C
Solvent Content: None
Curing Properties
Handling Cure Time:
• Unprimed surfaces: 1–2 hours
• Primed surfaces: 15 minutes–2 hours
Compressive Shear Strength (ISO 10123):
• After 24 hrs @ 22°C (Steel pins & collars): >5 N/mm² (>725 psi)
Lap Shear Strength (ISO 4587):
• Steel (grit blasted): 6 N/mm² (870 psi)
Tensile Strength (ISO 6922):
• Steel (grit blasted): 14 N/mm² (2,030 psi)
Service Temperature Range: −65°F to 300°F
Physical Properties
• Coefficient of Thermal Expansion: 80 × 10⁻⁶ (ASTM D696)
• Thermal Conductivity: 0.10 W/(m·K) (ASTM C177)
• Specific Heat: 0.30 kJ/(kg·K)
Chemical Resistance
(% Initial Strength Retained)
| Chemical | Temp | 500 hrs | 1000 hrs |
|---|---|---|---|
| Acetone | 22°C | 100% | 95% |
| Ethanol | 22°C | 90% | 85% |
| Motor Oil | 125°C | 160% | 165% |
| Gasoline | 22°C | 20% | 15% |
| Brake Fluid | 22°C | 95% | 95% |
| Water/Glycol | 87°C | 80% | 80% |
Application Instructions
• Clean all flange surfaces with solvent and allow to dry
• For inactive metals or slow cure, use Activator 3071 or 3049
• Apply a continuous bead manually or via screen printing to one flange surface
• Assemble promptly and tighten to specification
• Low-pressure testing may be performed immediately after assembly
Packaging & Storage
• Package Size: 50ml bottles
• Selling Unit: Case of 24 bottles
• Store unopened containers in a cool, dry place (46°F–82°F / 8°C–28°C)
• Do not return unused material to the original container
SONLOK 3515 delivers flexible, form-in-place flange sealing with excellent chemical resistance, making it a reliable alternative to Loctite 515 for pumps, housings, and mechanical assemblies—now available by the case of 24 for professional and industrial use.
