Rubber Information

Statement of RoHS Compliance

The Company, A.F.A.C. Ltd., declares that our silicone and EPDM products comply with the RoHS directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment.

Each component/material used in our products does not contain the following substances, or, if contained, their percentage will not exceed the limits given below: –

Substances and Limits for Each Homogeneous Material Used:

Lead: Limit: < 0.1% by weight (1000 ppm)
Mercury: Limit: < 0.1% by weight (1000 ppm)
Hexavalent chromium: Limit: < 0.1% by weight (1000 ppm)
Cadmium:  Limit: < 0.01% by weight (100 ppm)
Polybrominated biphenyls (PBB):  Limit: < 0.1% by weight (1000 ppm)
Polybrominated diphenyl ethers (PBDE) – flame retarders, including Deca BDE:  Limit: < 0.1% by weight (1000 ppm)

We confirm that the Company has procedures in place that both minimizes the risk of non-conformity and that maintains conformity. We assess & audit all new suppliers for RoHS conformity, and re-assess existing suppliers.

The typical substances composed of our silicone and EPDM products are listed below :

Silicone Rubber Information

Composition Function Chemical Formula CAS# Content %
Methyl Vinyl Polysiloxanes Silicone Rubber C3H10OSi2 68037-87-6 63.00
Hydroxy Silicone Oil Plasticizer HO[(CH3)2SiO]nH 70131-67-8 2.80
Silica  Filler SiO2 * nH2O 10279-57-9 33.40
Zinc Stearate Mold Lubricant C36H70O4Zn 557-05-1 0.10
DMDBH Cross-linking (Curing) Agent C16H34O4 78-63-7 0.70


EPDM Rubber Information

Composition Function Chemical Formula CAS# Content %
Ethylene Propylene Diene Rubber EPDM Rubber (C9H12.C3H6.C2H4)n 25038-36-2 37.50
Zinc Oxide Curing Activator ZnO 1314-13-2 1.87
Stearic Acid Curing Activator C18H36O2 57-11-4 0.47
Black Carbon Filler C 1333-86-4 20.50
Calcium Carbonate Filler CaCO3 471-34-1 18.71
Paraffin Oil Plasticizer CnH2(n+2) 8012-95-1 18.71
Sulphur (Curing Agent) Curing Agent S 7704-34-9 0.56
Curing Accelerators Curing Accelerator C7H5NS2 149-30-4 1.68


We undertake to keep a register and inform clients immediately if evidence of supply of non-compliant product arises.