Rubber-Metal Bonding Agent 829GB Cover Coat Adhesive Vulcanization for NR SBR CR

MOQ： 100 Kilograms
Price： USD 10-18 / Kilogram
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Equivalent Products	Chemlok 6411, Chemosil 411, Cilbond 80E, Megum 538/128
Viscosity (25°C)	150-500 mPa·s
Solvent System	Organic solvent based
Product Type	Cover Coat Adhesive
Application Method	Brush, dip, or spray coating
Compatible Primers	815GB, Chemlok 205, Chemosil 211
Solid Content	23-28%
Flash Point	> 10°C (closed cup)
Compatible Elastomers	NR, IR, SBR, BR, CR, NBR, IIR, EPDM
Shelf Life	12 months (unopened)
Drying Condition	Room temperature air dry prior to vulcanization
Supply Ability	50000 Kilograms per Month
Packaging Details	200kg/steel drum or 25kg/plastic drum, export-grade packaging with proper labeling and MSDS included
Delivery Time	7-15 working days after order confirmation
Appearance	Black viscous liquid
Payment Terms	T/T,L/C,Western Union
Density (25°C)	0.92-1.00 g/cm³
Heavy Metal Content	None (formulated without heavy metal elements)
Brand Name	EXCEEDCHEM
Model Number	829GB
Place of Origin	Shandong, China
Certification	GB 33372-2020, ISO 9001:2015

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Product Details
Company Details

Product Specification


Equivalent Products	Chemlok 6411, Chemosil 411, Cilbond 80E, Megum 538/128	Viscosity (25°C)	150-500 mPa·s
Solvent System	Organic solvent based	Product Type	Cover Coat Adhesive
Application Method	Brush, dip, or spray coating	Compatible Primers	815GB, Chemlok 205, Chemosil 211
Solid Content	23-28%	Flash Point	> 10°C (closed cup)
Compatible Elastomers	NR, IR, SBR, BR, CR, NBR, IIR, EPDM	Shelf Life	12 months (unopened)
Drying Condition	Room temperature air dry prior to vulcanization	Supply Ability	50000 Kilograms per Month
Packaging Details	200kg/steel drum or 25kg/plastic drum, export-grade packaging with proper labeling and MSDS included	Delivery Time	7-15 working days after order confirmation
Appearance	Black viscous liquid	Payment Terms	T/T,L/C,Western Union
Density (25°C)	0.92-1.00 g/cm³	Heavy Metal Content	None (formulated without heavy metal elements)
Brand Name	EXCEEDCHEM	Model Number	829GB
Place of Origin	Shandong, China	Certification	GB 33372-2020, ISO 9001:2015
High Light	Rubber-metal bonding adhesive for NR SBR ，Vulcanization adhesive for CR EPDM ，Rubber to metal cover coat adhesive

Product Overview

Rubber to Metal Bonding Agent 829GB is a heavy-metal-free cover coat adhesive specifically formulated for bonding natural and synthetic rubber compounds to metal and non-metal substrates during the vulcanization process. It serves as the topcoat layer in a two-coat adhesive system, providing a robust chemical bridge between the primed substrate and the rubber compound.

Equivalent to Chemlok 6411, Chemosil 411, Cilbond 80E, and Megum 538/128, our 829GB is engineered without heavy metal elements, making it a safer and more environmentally responsible choice for modern rubber-to-metal bonding applications.

Technical Specifications

Parameter	Specification
Product Type	Cover Coat Adhesive / Surface Treatment Agent
Appearance	Black viscous liquid
Solid Content	23-28%
Viscosity at 25°C	150-500 mPa·s
Density at 25°C	0.92-1.00 g/cm³
Flash Point	> 10°C (closed cup)
Solvent System	Organic solvent based
Heavy Metal Content	None detected (formulated without heavy metal elements)
Shelf Life	12 months in unopened original container
Storage Conditions	Cool, dry, well-ventilated area away from heat and ignition sources

Key Features & Benefits

Heavy-Metal-Free Formula: Formulated without heavy metal elements for safer handling and environmental compliance
Environmentally Compliant: Meets GB 33372-2020 standards for volatile organic compound emissions in adhesives
Broad Elastomer Compatibility: Bonds compounds based on NR, IR, SBR, BR, CR, NBR, IIR, and EPDM polymers
Pre-Baking Resistance: Maintains adhesive integrity during pre-baking cycles prior to vulcanization
Excellent Weather Resistance: Outstanding resistance to heat aging, water immersion, solvent exposure, oil contact, and salt spray corrosion
Versatile Application: Can be applied by brush, dip, or spray methods with excellent wetting and uniform film formation
Shelf Stability: 12-month shelf life when stored properly in original unopened containers

Compatible Elastomer Range

Elastomer Type	Abbreviation
Natural Rubber	NR
Natural & Butadiene Rubber Blend	NR + BR
Polyisoprene Rubber	IR
Butadiene Rubber	BR
Chloroprene Rubber	CR
Styrene Butadiene Rubber	SBR
Nitrile Butadiene Rubber	NBR
Butyl Rubber	IIR
Ethylene Propylene Diene Monomer	EPDM

Application Instructions

1. Substrate Preparation: Metal surfaces must be cleaned and degreased. Apply primer (such as 815GB) and allow adequate drying time as specified by the primer product guidelines.

2. Mixing: Stir 829GB thoroughly before use to ensure homogeneous dispersion of all components.

3. Application: Apply a uniform coat over the dried primer layer using brush, dip, or spray method.

4. Drying: Allow the cover coat to dry at room temperature until the solvent has fully evaporated. The surface should be tack-free before rubber application.

5. Vulcanization: Apply the rubber compound and proceed with the vulcanization process according to standard processing parameters.

Safety Note: Contains organic solvents. Use in well-ventilated areas. Keep away from heat, sparks, and open flames. Wear appropriate protective equipment including gloves and eye protection. Refer to the Safety Data Sheet (SDS) before use.

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

Graphite Plugged Bushings

from Quality China Factory

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Business Type:

Manufacturer,Distributor/Wholesaler,Exporter,Trading Company 


Year Established:

2013 


Total Annual:

10000000-20000000


Employee Number:

50~100 


Ecer Certification：

Verified Supplier 

Qingdao Exceed Fine Chemicals Co., Ltd is a high-tech enterprise that integrates manufacturing and trading. We specialize in the production of polyurethane-based products. Our company is dedicated to investing in research and development of cutting-edge products, collaborating with leading Chines... Qingdao Exceed Fine Chemicals Co., Ltd is a high-tech enterprise that integrates manufacturing and trading. We specialize in the production of polyurethane-based products. Our company is dedicated to investing in research and development of cutting-edge products, collaborating with leading Chines...

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Qingdao Exceed Fine Chemicals Co.,Ltd
Room 602, Building No. 9, Guoxin Haichuang Industrial Park, No. 50 Binhai Road, Jimo District, Qingdao, Shandong, China. 266000
https://www.tdimdipolyurethane.com/

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