SILANDE MF881 Structural Silicone Sealant Part B (Curing Agent) for Insulated Glass Units

Model Number: 100100584

Part B (curing agent) of the SILANDE MF881 two-component structural silicone sealant system. It reacts with Part A (base) to initiate curing and form a high-strength, elastic, and weather-resistant silicone structure suitable for structural glazing and insulated glass applications.

Technical details

Product TypeStructural Silicone Sealant Curing Agent
BrandSILANDE
ModelMF881 Part B
Component TypeCuring Agent (Part B)
SystemTwo-Component Silicone Sealant (A + B)
FunctionCatalyst / curing component for structural silicone system
ApplicationStructural Glazing / Curtain Wall / IG Applications (after mixing)
Curing RoleInitiates chemical crosslinking reaction with Part A
Physical StatePaste / Catalyst compound
ColorBlack (typical catalyst component)
Mixing RequirementMust be mixed with Part A before use
Mixing RatioSystem dependent (typically 11:1 – 14:1 by weight with Part A)
Reaction TypeCondensation curing system
Storage StabilitySensitive to air moisture; must be tightly sealed
PackagingIndustrial pail / drum system (~19 L / ~19.6 kg standard)
Shelf Life12 months (sealed condition)
Country of OriginPRC (China)

Description

SILANDE MF881 Part B is the curing agent component of a two-component structural silicone sealant system designed for high-performance structural glazing applications. It reacts with Part A (base polymer) to initiate the curing process and form a durable, elastic, and weather-resistant silicone structure. Once combined, the system provides strong adhesion to glass, coated glass, aluminum, and stainless steel surfaces, making it suitable for curtain wall and façade applications in architectural glazing systems.

Spec & Technical Data

SILANDE MF881 Part B functions as the curing catalyst in a two-component condensation curing silicone system. It is designed to be mixed with Part A in a controlled ratio typically ranging from 11:1 to 14:1 by weight depending on system requirements. The curing agent initiates chemical crosslinking, transforming the base polymer into a high-strength elastic sealant with excellent mechanical performance. The system, once fully cured, delivers high adhesion, UV resistance, weather resistance, and long-term stability under temperature conditions ranging from -60°C to +180°C. The product must be stored in tightly sealed containers due to its sensitivity to ambient moisture and is supplied in industrial pails or drum packaging for professional use in structural glazing applications.

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