Welcome to Supex
Welcome to Supex
Supex Neutral RTV Silicone Sealant is a professional-grade, non-corrosive, low-odour sealant designed for durable bonding and waterproof sealing on a wide range of materials. Its neutral-cure formulation offers excellent adhesion to glass, metals, plastics, ceramics, uPVC, and painted surfaces while remaining permanently flexible and resistant to weather, UV, and moisture. Ideal for construction, automotive, industrial, and household applications where long-lasting performance and material safety are essential.
100% Authentic products
25+ Years of expertise
Pan-India delivery
100% Authentic products
25+ Years of expertise
Pan-India delivery
Supex Neutral Plus Silicone Sealant is a high-performance neutral cure RTV silicone sealant designed for long-lasting sealing and bonding in construction, industrial, and glazing applications. It provides excellent adhesion to glass, metal, aluminum, ceramics, plastics, and painted surfaces without causing corrosion or staining.
This neutral cure silicone sealant is widely used in window sealing, façade construction, HVAC systems, electrical enclosures, and general industrial sealing where reliable waterproof and weather-resistant performance is required.
Its non-corrosive curing system makes it ideal for use on sensitive materials such as aluminum, steel, mirrors, and electronic components.
Supex Neutral Plus RTV silicone sealant is widely used across multiple industries for sealing and bonding applications.
Supex Neutral Plus RTV silicone sealant bonds strongly to a wide range of construction and industrial materials.
This makes it suitable for both construction and industrial sealing environments.
| Feature | Neutral Cure Silicone | Acetoxy Silicone |
|---|---|---|
| Metal Compatibility | Excellent | Limited |
| Odour | Low | Strong |
| Corrosion Risk | None | Possible |
| Sensitive Materials | Safe | Not recommended |
| Typical Use | Industrial | General purpose |
Supex Neutral Plus meets these needs with reliable quality.
Available in 270 ml, 300 ml cartridges, 600 ml sausage, 20 kg pail
Colours: Clear, White, Black, RAL 9002, RAL 9010, RAL 9003, RAL 7040 , any colour as per request
Neutral cure silicone sealant is used for sealing glass, metal, aluminum, uPVC, concrete, and construction joints where corrosion-free bonding is required.
Yes, neutral cure silicone is safer for metals and sensitive materials because it does not release acidic by-products during curing.
Yes, Supex Neutral Plus silicone sealant provides waterproof, UV-resistant sealing suitable for exterior construction applications.
It bonds to glass, aluminum, steel, ceramics, plastics, concrete, and painted surfaces.
Yes, this RTV silicone sealant is commonly used for HVAC duct sealing and electrical enclosure sealing.
Mirror Bonding
Ideal for adhesive mirror-to-wall bonding across surfaces such as tiles, wood, metal, and painted walls.
Designed to be non-corrosive, ensuring the mirror backing is not damaged over time.
Provides a strong, flexible, long-lasting hold.
Clean Room Sealing
Suitable for sealing clean room walls, floors, ceilings, doors, and window perimeters.
Formulated to meet strict clean-room requirements with low VOCs and minimal odour.
Excellent for airtight joints and preventing moisture or particle intrusion.
Cold Room & Refrigeration Panels
Specially designed for sealing PUF panels, cold room joints, and refrigeration unit seams.
Neutral-cure, mildew-resistant white silicone ideal for cold environments and temperature-controlled spaces.
Automotive & Industrial Sealing
Industrial-grade RTV silicone for sealing in automotive manufacturing, machinery, and heavy equipment.
Widely used as a formed-in-place gasket for gearboxes, pumps, electrical enclosures, solar modules, and mechanical housings.
Effective for oil sump sealing, timing belt covers, bus body sealing, and more.
Multi-Substrate Bonding
Provides excellent adhesion to a wide range of materials including metals, ceramics, glass, composites, and many plastics.
Suitable for sealing joints exposed to water, oil, chemicals, and outdoor conditions.
Supex Neutral RTV Silicone Sealant is supplied ready to use and flows smoothly from the cartridge under pressure. Its paste-like consistency makes application simple, and the surface can be tooled easily using a spatula or wooden paddle.
Apply the sealant directly to the prepared surface.
Tool the surface within 5–10 minutes of application. After this window, the sealant will begin forming a skin, making tooling difficult or impossible.
At approximately 22°C (72°F) and 50% relative humidity, the sealant develops a tack-free skin in about 30 minutes.
If using masking tape to define clean edges, remove it before the skin forms to avoid tearing or pulling.
The sealant cures from the outside inward, so allow adequate curing time before exposing the joint to stress, movement, or moisture.
| Property | Specification |
|---|---|
| Appearance | Paste |
| Odour | Low odour |
| Specific Gravity | 0.99 |
| Skinning Time | 5 min |
| Application Temperature | +5°C to +45°C |
| Consistency | Non-sag |
| Hardness Shore A (24 h) | 17 |
| Hardness Shore A (7 d) | 21 |
| Tensile Modulus | 1 MPa |
| Elongation at Break | 750% |
| Depth of Curing (24 h) | 2 mm |
| Depth of Curing (7 d) | 8 mm |
| Extrudability | 5 ml / 2 s |
Testing Conditions:
23 ± 2°C and 50 ± 5% RH unless otherwise specified.
Values are for guidance only and not intended for specification writing.
Packaging : Sealant Silicone RTV is available in 260 ml, 280 ml cartridge, 600 ml sausage and 200 Kg drum
Colours: Black, grey, white, clear readily avaialble. various colours against order
Shelf Life: Store the product in a cool and dry place. The shelf life is 12 months at temperatures between +5°C and +25°C.
Caution: Keep Sealant Silicone out of reach of children. Avoid contact with skin. Use only in well ventilated areas. Irritating to eyes. Don’t use in aquariums.
Health and Safety: For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing, physical, ecological, and toxicological and other safety related data.
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