Rubber to Metal Bonding Adhesive 823GB Alternative of Chemosil 222/225

Used as a cover coat adhesive and in combination with a primer adhesive, suitable for the following types of rubber:

• Natural rubber (NR)
• Natural & butadiene rubber (NR+BR)
• Polyisoprene rubber (IR)
• Butadiene rubber (BR)
• Chloroprene rubber (CR)
• Styrene butadiene rubber (SBR)
• Nitrile butadiene rubber (NBR)

During storage, some sediment will settle at the bottom of the container. Before painting, it must be thoroughly stirred to achieve uniform mixing before use. If the painting process is long, stir at high speed for 5-10 minutes every 2 hours.

This product can be diluted with diluents according to operational needs. It is recommended to dilute according to the amount used. Diluted products should not be stored for a long time.

• Brush coating method: No dilution required, or 100 parts of 823GB and 10 parts of diluent
• Roller coating method: No dilution required, or 100 parts of 823GB and 10 parts of diluent
• Dip: 100 parts of 823GB and 20-30 parts of diluent
• Spray method: 100 parts of 823GB and 50-100 parts of diluent

This product can be applied by brushing, dipping, roller coating, or spraying. The coating layer must be uniform to avoid excessive overflow.

Dry film thickness (DFT): 10-20 μm.

Drying at room temperature takes approximately 45-60 minutes. Forced drying can shorten the drying time.

Prior to heat vulcanization, use a rag soaked in xylene to remove any excess treatment agent spilled on surrounding areas. Once cured, the agent cannot be removed with solvents.

Simultaneous vulcanization of rubber and adhesive delivers the best bonding performance. After placing the coated part into the mold, the mold should be quickly filled with rubber for vulcanization. Actual curing conditions depend on the curing requirements of the rubber.

Shelf life is 12 months from date of shipment when stored at <37℃ in original, unopened container. Do not store or use near heat, sparks or open flame.

• This product is volatile - close the container after use
• Solvent steam is harmful - maintain proper ventilation and fire prevention measures
• Avoid long-term inhalation or skin contact
• Refer to SDS for complete safety information