Butyl rubber (IIR) for sealant production is mainly purchased from professional chemical raw material manufacturers that can ensure stable quality, consistent molecular structure, and reliable supply for industrial-scale sealant formulations such as construction sealants, waterproof sealants, and adhesive systems.
Reliable Source for Butyl Rubber (IIR) Raw Material
TIANJIN GNEE BIOTECH CO., LTD. is a professional chemical raw material manufacturer specializing in Butyl Rubber (IIR), PIB (polyisobutylene), and halogenated butyl rubber for industrial applications including sealant production.
Founded in 2016, the factory is located in Henan Province and covers an area of 3,600 square meters. With more than 10 years of industry experience, the company operates a dedicated R&D team focused on polymer materials and rubber modification solutions.


Why Buy Butyl Rubber (IIR) from a Professional Manufacturer?
For butyl rubber sealant formulation buyers, choosing a direct manufacturer is critical to ensure:
- Stable supply of IIR rubber sealant raw materials
- Consistent molecular weight and performance
- Suitable viscosity for sealant compounding
- Reliable batch-to-batch quality control
- Competitive factory pricing for bulk orders
GNEE BIOTECH supplies different grades of butyl rubber (IIR for sealant applications) suitable for construction sealants, waterproofing systems, automotive sealing materials, and industrial adhesives.
Main Products for Sealant Industry Applications
Our core polymer materials include:
- Low, medium, and high molecular weight PIB (Polyisobutylene)
- Butyl Rubber (IIR) for sealant formulation
- Halogenated Butyl Rubber (CIIR / BIIR) for high-performance sealing systems
These materials are widely used in butyl rubber sealant compounds, hot-melt sealants, adhesive sealants, and waterproof sealing tapes.
Applications of Butyl Rubber (IIR) in Sealant Industry
Butyl rubber is widely used in:
- Construction expansion joint sealants
- Waterproof roofing sealant systems
- Automotive sealing strips and vibration damping materials
- Industrial adhesive and gap-filling sealants
- Butyl rubber sealant tape production
Its excellent airtightness and moisture resistance make it a key material in modern IIR-based sealant formulations.

