What is cyanoacrylate adhesive and how does it cure?

Cyanoacrylate adhesive — commonly called instant adhesive or super glue — is a single-component, solvent-free adhesive that cures rapidly through moisture on the substrate surface. No mixing, no heat, and no UV light is required. Cure begins within seconds of contact and reaches full strength within minutes to hours depending on the substrate and gap size.

What is the difference between Cyro-Weld™ and Heat-Resist™?

Cyro-Weld™ is a medical-grade cyanoacrylate range meeting ISO 10993-5 biocompatibility and Mil-A-46050C military standards, suitable for needle bonding, catheter assembly, and medical device manufacturing. Heat-Resist™ is a rubber-toughened high-temperature CA range rated to 145°C for automotive, aerospace, and industrial applications subjected to elevated temperatures and thermal shock. Both ranges cover viscosities from ultra-low wicking grades to very-high gels.

What bond strength do cyanoacrylate adhesives achieve?

Incure cyanoacrylate grades achieve bond strengths up to 5,200 PSI on plastics (PC, PVC) and up to 5,200 PSI on steel. Bond strength varies by grade and substrate. Rubber-toughened Heat-Resist™ grades achieve the highest values under thermal cycling conditions.

What substrates do cyanoacrylate adhesives bond?

Cyanoacrylates bond most common materials including plastics (PC, PVC, ABS), metals (steel, aluminium), rubber, foam, cloth, and wood. Some low-surface-energy substrates (PTFE, polyethylene, polypropylene) require a surface primer or activator for reliable adhesion.

How do I choose the right viscosity grade?

Match viscosity to joint geometry. Ultra-low viscosity (1–11 cP) wicking grades penetrate tight-clearance joints such as needle hubs and capillary gaps by capillary action. Low viscosity (30–130 cP) grades work for standard surface bonding. Medium and high viscosity (260–4,000 cP) grades are used for gap-filling, vertical surfaces, and applications requiring the adhesive to stay in place before cure.

Can cyanoacrylate adhesives withstand high temperatures?

Standard cyanoacrylates are rated to 95°C. For applications requiring higher heat resistance, Heat-Resist™ rubber-toughened grades are rated to 135–145°C and resist thermal shock. For temperatures above 145°C, consider Incure epoxy or inorganic binder products rated for higher service temperatures.

Cyanoacrylate Adhesives — Cyro-Weld™ & Heat-Resist™

Incure cyanoacrylate adhesives deliver instant cure, exceptional bond strength, and broad substrate compatibility — without mixing or special equipment. From ISO 10993-compliant medical grades to rubber-toughened formulations that hold at 145°C, there is an Incure CA for every critical bonding challenge.

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No UV, Heat, or Activator Required

Single-component formulas cure on contact with surface moisture — no UV lamp, heat, or activator required.

Bond Strengths to 5,200 PSI

High-performance grades deliver extraordinary shear strength on plastics, metals, rubber, and composites.

MIL-A-46050C & ISO 10993-5 Qualified

ISO 10993 biocompatible and MIL-A-46050C qualified grades available for regulated applications.

Product Range

Specialised Product Lines

Each line is engineered for a specific application domain — select the range that matches your bonding requirements.

Cyro-Weld™

Medical Cyanoacrylate Adhesives

Biocompatible, fast-curing adhesives engineered for medical device assembly — needle bonding, catheter fabrication, TPE and rubber bonding, and other critical applications where purity and performance are non-negotiable. Tested to ISO 10993 standards.

viscosity 1–3,000 cP

Service temp −55°C to 145°C

ISO 10993-5 biocompatible · MIL-A-46050C

Bond strength to 5,200 PSI · Clear and black grades

20 g to 2 kg pack sizes · MOQ from 1 unit

Heat-Resist™

High Temperature Cyanoacrylate Adhesives

Rubber-toughened, thermal shock resistant cyanoacrylates engineered for extreme environments — automotive under-hood, aerospace, electronics PCB bonding, and industrial equipment where standard CA adhesives fail under heat and vibration.

viscosity 260–3,000 cP

Service temp −55°C to 145°C

MIL-A-46050C qualified · thermal shock resistant

Bond strength to 5,200 PSI · Clear and black grades

20 g to 454 g pack sizes · MOQ from 2 units

Why Cyanoacrylate

The Engineering Advantages of CA Adhesives

Cyanoacrylate adhesives combine simplicity of use with exceptional performance —
making them the preferred choice for high-volume precision assembly.

Vintage laboratory glassware for cyanoacrylate room temperature moisture-cure bonding

Room Temperature Cure

Cyanoacrylates cure rapidly at ambient temperature via surface moisture — no heat, UV lamp, or activator is needed for most substrate combinations, simplifying your assembly process.

Wide Viscosity Selection

From 1 cP wicking grades that penetrate tight assemblies to 3,000 cP gels for vertical surfaces and gap-filling — a viscosity match for every joint geometry.

Multi-Substrate Bonding

Bonds plastics (PC, PVC, ABS), metals (steel, aluminium), rubber, foam, cloth, and wood — often without the need for primers or surface preparation.

Automated pipetting robot for Cyro-Weld™ ISO 10993 biocompatible cyanoacrylate production

ISO 10993 Biocompatibility

Selected Cyro-Weld™ grades are tested to ISO 10993-5, -10, and -11 standards — enabling use in medical devices, diagnostics, and patient-contact assemblies.

Industrial electrical panel assembly for Heat-Resist™ high temperature cyanoacrylate bonding

High Temperature Resistance

Rubber-toughened Heat-Resist™ grades maintain full bond integrity through continuous service to 145°C and rapid thermal cycling from −55°C — passing MIL-A-46050C thermal shock testing.

Flexible Pack Sizes

Available from 20 g to 2 kg with MOQ starting from 1 unit — scale from lab validation through full production with consistent chemistry and pricing.

FAQ

Frequently Asked Questions

Common questions about Incure cyanoacrylate adhesives.

Cyanoacrylate adhesive is a single-component, solvent-free adhesive that cures rapidly through moisture on the substrate surface. No mixing, no heat, and no UV light is required. Cure begins within seconds of contact and reaches full strength within minutes to hours depending on the substrate and gap size.
Cyro-Weld™ is a medical-grade cyanoacrylate range meeting ISO 10993-5 biocompatibility and Mil-A-46050C military standards — suited for needle bonding, catheter assembly, and medical device manufacturing. Heat-Resist™ is a rubber-toughened high-temperature range rated to 145°C for automotive, aerospace, and industrial applications subjected to thermal shock. Both cover viscosities from ultra-low wicking grades to very-high gels.
Incure cyanoacrylate grades achieve bond strengths up to 5,200 PSI on plastics (PC, PVC) and up to 5,200 PSI on steel. Bond strength varies by grade and substrate. Rubber-toughened Heat-Resist™ grades achieve the highest values under thermal cycling conditions.
Cyanoacrylates bond most common materials including plastics (PC, PVC, ABS), metals (steel, aluminium), rubber, foam, cloth, and wood. Some low-surface-energy substrates (PTFE, polyethylene, polypropylene) require a surface primer or activator for reliable adhesion.
Match viscosity to joint geometry. Ultra-low viscosity (1–11 cP) wicking grades penetrate tight-clearance joints by capillary action. Low viscosity (30–130 cP) grades work for standard surface bonding. Medium and high viscosity (260–4,000 cP) grades are used for gap-filling, vertical surfaces, and applications requiring the adhesive to stay in place before cure.
Standard cyanoacrylates are rated to 95°C. For higher heat resistance, Heat-Resist™ rubber-toughened grades are rated to 135–145°C and resist thermal shock. For temperatures above 145°C, consider Incure epoxy or inorganic binder products rated for higher service temperatures.