Permanent - Quality Controller - Ekurhuleni (East Rand) - South Africa

A Quality Controller (Seal Manufacturing) ensures that all rubber, polymer, and mechanical seals meet dimensional, material, and performance specifications. The role focuses on inspecting raw materials, monitoring molding/curing processes, and verifying finished seals comply with customer drawings and industry standards.

• Inspect rubber compounds, PTFE, elastomers (NBR, EPDM, Viton/FKM, Silicone, etc.)

• Verify material certifications and batch traceability

• Conduct hardness (Shore A), tensile, and elongation tests

• Use calipers (verniers), micrometres, and o -ring gauges

• Check dimensions against technical data sheets

• Conduct visual inspection for surface defects (flash, cracks and deformation)

• Maintain inspection records and quality reports

• Prepare non-conformance reports (NCR)

• Ensure compliance with ISO quality standards (e.g., ISO 9001)
• Support internal and external audits

• Analyse defect trends for each supplier

• Suggest corrective and preventive actions

 Strong knowledge of rubber/elastomer properties

Knowledge of full dimensional inspection techniques

Familiarity with hardness testers and testing equipment

Good analytical and problem-solving skills

Attention to detail

Basic knowledge of ISO 9001 quality systems

OWN TRANSPORT REQUIRED

5 years of experience in rubber or seal manufacturing

Experience in hydraulic, automotive, or industrial sealing products preferred.

Ability to handle small components and measurement tools

Good eyesight for detailed inspection

Defect rate reduction

Customer complaint reduction

On-time inspection reporting