MSP Silicone Sealant – Strong, Flexible, Waterproof
KASTAR MSP Silicone Sealant is a high-performance, one-component silicone-based sealant expertly formulated to deliver superior bonding and sealing solutions for a wide range of construction and industrial applications. Its advanced Modified Silane Polymer (MSP) technology ensures exceptional adhesion to materials such as glass, metal, wood, and masonry, providing durable and flexible seals that withstand harsh environmental conditions. Resistant to UV rays, extreme temperatures, and chemical exposure, KASTAR MSP is ideal for both indoor and outdoor use. With a smooth, non-sagging consistency, this sealant is easy to apply using a caulking gun, ensuring a professional-grade finish that maintains its integrity and performance over time, effectively preventing leaks, drafts, and corrosion in critical joints and assemblies.
Appearance: Smooth paste
Density (g/cm³): 1.28
Sagging properties (mm): 0
Shore A hardness (A°): 35
Tack free time (min): 110
Tensile strength (MPa): 5.8
KASTAR MSP Silicone Sealant is meticulously engineered to provide exceptional performance in a variety of sealing and bonding applications. Its innovative Modified Silane Polymer (MSP) technology combines the flexibility of polyurethane with the durability of silicone, delivering superior adhesion to diverse substrates including glass, metal, wood, and masonry. This “MSP silicone sealant” offers outstanding resistance to UV radiation, extreme temperatures, and chemical exposure, ensuring that seals remain intact and effective over time.
The sealant’s flexible and elastic properties allow it to accommodate joint movement caused by structural shifts, thermal expansion, and contractions, preventing cracks and maintaining watertight and airtight seals that enhance energy efficiency and structural integrity. Its smooth, non-sagging consistency facilitates easy and precise application with a caulking gun, resulting in a clean and professional finish without dripping or running. Additionally, KASTAR MSP is mold and mildew resistant, making it a hygienic choice for areas prone to moisture and contamination.
With its long-lasting durability and minimal maintenance requirements, KASTAR MSP Silicone Sealant is the trusted solution for professionals seeking reliable and high-performance sealing in construction and industrial projects. Whether used for sealing windows and doors, expansion joints, façades, or industrial equipment, KASTAR MSP delivers unmatched protection and performance, ensuring the longevity and efficiency of sealed assemblies.
- Window Installations: Creates watertight and airtight seals around window frames to enhance energy efficiency and prevent drafts.
- Door Installations: Provides airtight and watertight seals around door frames, enhancing energy efficiency and security.
- Bathroom and Kitchen Sealing: Ideal for sealing sinks, tubs, showers, and countertops to prevent water ingress and mold growth.
- Exterior Joints: Perfect for sealing expansion joints, façade seams, and other exterior construction joints exposed to the elements.
NO. | ITEM | DATA |
1 | Basic material | Modified Silane Polymer (MSP) Silicone |
2 | Color | White, Clear, or Colored |
3 | Consistency | Paste |
4 | Application Consistency | Caulking Gun |
5 | Net Weight | 600 ml |
6 | Average Nonvolatile(FSTM 9A) | 95% |
7 | Temperature Resistance | -50℃ to 200℃ |
8 | Service Temperature limits | -40℃ to 150℃ |
9 | Storage Temperature | 5℃ to 35℃ |
10 | Application Temperature | 5℃ to 40℃ |
11 | Skin Drying Time(mins) | 100 |
12 | Density | 1.30 |
13 | Shrinkage(mm) | 0 |
14 | Tack free time(min) | 100 |
15 | Curing rate(2mm/h) | 24 hours |
16 | Solid content (%) | 95% |
17 | Shelf life | 18 months |
18 | Storage | Store in a cool, dry place away from direct sunlight. |
NO. | ITEM | DATA |
1 | Basic material | Modified Silane Polymer (MSP) Silicone |
2 | Color | White, Clear, or Colored |
3 | Consistency | Paste |
4 | Application Consistency | Caulking Gun |
5 | Net Weight | 600 ml |
6 | Average Nonvolatile(FSTM 9A) | 95% |
7 | Temperature Resistance | -50℃ to 200℃ |
8 | Service Temperature limits | -40℃ to 150℃ |
9 | Storage Temperature | 5℃ to 35℃ |
10 | Application Temperature | 5℃ to 40℃ |
11 | Skin Drying Time(mins) | 100 |
12 | Density | 1.30 |
13 | Shrinkage(mm) | 0 |
14 | Tack free time(min) | 100 |
15 | Curing rate(2mm/h) | 24 hours |
16 | Solid content (%) | 95% |
17 | Shelf life | 18 months |
18 | Storage | Store in a cool, dry place away from direct sunlight. |

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