MS Structural Sealant for Sealing of Various Joints in Construction

In modern construction and façade systems, the sealing of various joints is critical to ensure structural integrity, waterproof performance, and long-term durability. Expansion joints, connection joints, perimeter joints, and façade interfaces must accommodate movement while maintaining reliable adhesion.

TM505 Premium Construction All Purpose MS Polymer Sealant from Tengyu is a high-performance MS Polymer structural sealant engineered for elastic sealing across a wide range of construction joints.

Engineered for Elastic Sealing of Various Joints

TM505 is a one-component, moisture-curing MS Polymer Sealant based on silane-terminated polymer technology. After exposure to atmospheric moisture, it cures into a durable, rubber-like elastomer capable of absorbing dynamic movement.

Key Performance Characteristics

• Elongation at break: 300%–700%

• Tensile strength: 2.3 MPa

• Shear strength: 2.8 MPa

• Shore A hardness: 45

• Non-shrinking after curing

• Excellent weather resistance

Its high elasticity and permanent flexibility make it suitable for movement joints subjected to thermal expansion, structural vibration, and substrate displacement.

Suitable for Multiple Joint Types

TM505 MS structural sealant is designed for:

• Expansion joints

• Connection joints between dissimilar materials

• Curtain wall perimeter sealing

• Window and door frame joints

• Precast concrete panel joints

• Interior and exterior finishing joints

The sealant forms durable adhesion to:

• Metal

• Glass

• Concrete

• Ceramic

• Coated surfaces

• Wood

This wide substrate compatibility reduces the need for multiple sealing systems on complex projects.

Advantages Over Conventional Sealants

Compared with traditional polyurethane or solvent-based sealants, MS Polymer structural sealant provides:

• Solvent-free formulation (no toluene, no formaldehyde)

• No shrinkage after curing

• Superior UV and weather resistance

• Long-term elasticity retention

• Low odor and safer application

These characteristics make it suitable for both interior and exterior joint sealing where durability and environmental compliance are required.

Long-Term Performance in Dynamic Joint Systems

The sealing of various joints requires a material that maintains elasticity without cracking or debonding over time. TM505 maintains its rubber-like flexibility while delivering stable mechanical strength, ensuring reliable joint performance in demanding construction environments.

Contact Tengyu

For technical specifications, samples, OEM cooperation, or project consultation, please contact:

Contact Person: Jenny
Tel: +86 18615350735
WhatsApp: +86 13553116229
Email: jenny@sdsealant.com

Tengyu provides professional MS Polymer structural sealant solutions for global construction and façade applications.