| Acetoxy-Cure Silicone | Moisture-cure; releases acetic acid during cure. | Glass, glazed ceramic, sanitary joints, and general non-sensitive sealing. | Skin formation commonly within approximately 5–20 minutes; full cure depends on joint depth, humidity, and temperature. Typical service temperature is about −50°C to +150°C, subject to the technical data sheet. | Fast curing, strong adhesion to glass and ceramic, broad availability, and usually competitive cost. | Acidic by-products may corrode or stain some metals, natural stone, concrete, cementitious surfaces, and sensitive electronic components. | Confirm substrate compatibility, odor acceptance, adhesion after immersion, movement capability, extrusion rate, and stated compliance documents. |
| Neutral Oxime-Cure Silicone | Moisture-cure; commonly releases oxime-type or related neutral by-products. | Metal, coated metal, glass, masonry, façades, windows, doors, and general construction joints. | Typical skin formation is approximately 10–30 minutes; cure rate depends on humidity and joint geometry. Many products offer movement capability in the ±25% range, but classification must be verified. | Lower corrosion risk than acetoxy systems and good adhesion to many common construction substrates. | Some formulations may have odor during cure; adhesion to certain plastics, powder coatings, and porous substrates may require testing or primer. | Request substrate-specific adhesion results, primer requirements, VOC information, cure chemistry disclosure where applicable, and batch consistency data. |
| Neutral Alkoxy-Cure Silicone | Moisture-cure; releases alcohol-type by-products. | Interior construction, façade joints, windows, sensitive metals, plastics, and applications requiring lower odor. | Often available in low-odor or low-emission formulations. Typical movement capability ranges from approximately ±20% to ±25%, depending on product design and testing. | Good compatibility with many metals and building materials; generally lower odor than acetoxy products. | May cure more slowly in dry conditions; adhesion to difficult plastics and some coatings still requires validation. | Check emission class, indoor-air documentation, adhesion on actual substrates, storage stability, and low-temperature extrusion performance. |
| High-Modulus Construction Silicone | Usually neutral- or acetoxy-cure silicone with higher cured modulus. | Perimeter sealing, glazing support, façade interfaces, expansion joints, and weather-exposed building details. | Designed for strong adhesion and weather resistance; movement class and modulus vary by formulation. Typical service ranges may extend from approximately −40°C to +150°C. | Good resistance to ultraviolet radiation, ozone, rain, and temperature cycling when correctly specified. | Higher modulus can transfer more stress to weak substrates or poorly designed joints; not automatically suitable for every dynamic joint. | Verify movement classification, tensile adhesion, peel adhesion, weathering data, compatibility with glazing materials, and joint-design requirements. |
| Low-Modulus Weatherproofing Silicone | Generally neutral-cure, moisture-curing silicone. | Façade movement joints, curtain-wall interfaces, perimeter seals, and substrates subject to differential movement. | Commonly formulated for high elasticity and movement capability of approximately ±25% or higher, subject to the applicable product classification. | Accommodates thermal and structural movement with lower stress on joint edges. | Requires correct joint geometry, backer material, surface preparation, and tooling; may have lower resistance to mechanical abrasion. | Check ISO 11600 or EN 15651 classification, adhesion-in-peel, elastic recovery, movement capability, primer requirements, and color stability. |
| Sanitary / Anti-Mould Silicone | Usually acetoxy- or neutral-cure silicone containing a fungistatic additive. | Bathrooms, kitchens, shower enclosures, washrooms, and areas exposed to intermittent moisture. | Designed for water resistance and mould-resistance testing; performance depends on cleaning, ventilation, joint design, and continuous exposure conditions. | Suitable for wet-area finishing and commonly available in clear and sanitary colors. | Not a substitute for structural waterproofing; biocidal additives do not prevent mould caused by persistent contamination or poor ventilation. | Request test method and duration for mould resistance, biocidal regulatory information, adhesion after water exposure, and cleaning-chemical resistance. |
| High-Temperature Silicone | Usually acetoxy- or neutral-cure silicone formulated for elevated-temperature service. | Ovens, heating equipment, exhaust components, industrial equipment, and appliance sealing where the product specification permits. | Some products are rated for continuous exposure around 200°C to 300°C; exact limits, cure state, and exposure duration must be confirmed from the technical data sheet. | Maintains elasticity better than many general-purpose sealants under elevated temperatures. | High-temperature rating does not guarantee resistance to fuel, oil, steam pressure, or direct flame; adhesion may decline on contaminated or oxidized surfaces. | Verify continuous and intermittent temperature limits, thermal aging, flame or smoke requirements, chemical resistance, and post-cure behavior. |
| Electronics / Low-Stress Silicone | Usually neutral-cure silicone selected for low corrosion and electrical insulation. | Protection of components, cable entries, sensors, connectors, and non-structural electronic assemblies. | Typical cured materials are electrically insulating, flexible, and resistant to humidity and temperature cycling. Electrical ratings must be product-specific. | Good flexibility, moisture resistance, and low mechanical stress on delicate components. | Not every silicone is suitable for electronics; volatile residues, ionic contamination, adhesion, and dielectric properties require validation. | Request volume resistivity, dielectric strength, ionic contamination or corrosion data, outgassing information where relevant, and RoHS/REACH documentation. |
| Two-Part Addition-Cure Silicone | Platinum-catalyzed addition cure; mixed from two components. | Industrial molding, potting, gasketing, optical or specialty components, and applications requiring controlled cure depth. | Cures throughout the material with limited dependence on atmospheric moisture. Pot life and demould or handling time are formulation-specific. | Deep-section curing, low shrinkage, precise processing, and good repeatability when mixing is controlled. | Higher equipment and process-control requirements; cure can be inhibited by sulfur, amines, tin compounds, and some other contaminants. | Check mix ratio, viscosity balance, pot life, cure time, shore hardness, inhibition sensitivity, packaging shelf life, and equipment compatibility. |
