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