Acidic silicone sealant

Acidic Silicone Glass Sealant (Acidic Silicone Sealant) is a one-component, room temperature vulcanizing (RTV) silicone sealant widely used in construction, household, and industrial applications due to its low cost, fast curing, and strong adhesion.

Key Characteristics

1. Acidic Cure (Acetic Type)

• Releases acetic acid during curing, producing a noticeable vinegar-like odor. It may corrode certain metals (e.g., copper, iron, aluminum) and stones (e.g., marble, concrete).

• Suitable for: Glass, ceramics, PVC, wood, and other non-sensitive materials

2. Fast Curing

• Tack-free time: Approximately 10-30 minutes (forms a surface film).

• Full cure: 24-72 hours (depends on ambient temperature and humidity)

3. Excellent Adhesion

• Strong bonding to glass, tiles, plastics, wood, etc., making it widely used for sealing windows, doors, and bathrooms

4. Strong Weather Resistance

• Resistant to UV rays, high and low temperatures (-50°C ~ 200°C), suitable for outdoor use (e.g., glass curtain walls, sunrooms)

5. Waterproof and Mold Resistant

• Impermeable to water. Some products contain fungicides, making them suitable for damp environments (e.g., bathrooms, kitchens)

6. Good Elasticity

• Remains flexible after curing, accommodating thermal expansion and contraction of substrates (movement capability approx. ±10%)

Primary Applications

1. Construction & Decoration

• Installation and sealing of door and window glass

• Waterproofing joints in glass curtain walls and sunrooms

• Leak prevention for tiles and sanitary ware (e.g., sink counters, toilet bases)

• Bonding and sealing aquariums

2. Household Repairs

• Fixing mirrors and glass ornaments

• Sealing pipe and drain connections

3. Industrial Applications

• Temporary sealing for automotive lights and ventilation ducts

• Edge waterproofing for advertising boards and solar panels

Usage Precautions

1. Avoid Corrosive Materials

• Marble, granite, concrete (acidic components can corrode the surface)

• Copper, aluminum, iron, and other metals (may cause rust or oxidation over time)

• Electronic components (acetic acid vapor may corrode circuits)

• Not recommended for:

• Compatible materials: Glass, ceramics, PVC, wood, stainless steel (430/304)

2. Surface Preparation

• Substrates must be clean, dry, and free of oil/grease, otherwise adhesion will be compromised

• Smooth surfaces (e.g., glass) can be wiped with alcohol first

3. Application Environment

• Recommended application temperature: 5°C ~ 40°C; humidity: 40% ~ 80%

• Maintain ventilation during curing to reduce irritation from acetic acid odor

4. Curing Time

• Avoid water contact for the first 24 hours. Allow 72 hours for full cure before subjecting to pressure

5. Safety Protection

• Avoid contact with skin or eyes. If contact occurs, rinse immediately with plenty of water

• Cured sealant is non-toxic, but uncured acetic acid may irritate the respiratory tract

Acidic silicone glass sealant is suitable for low-cost, fast-curing general sealing needs, but material compatibility must be considered to avoid corrosion issues