Quality control procedures for API 6A Wellhead Equipment Seals ensure dimensional accuracy, material verification, and defect-free production. Visual inspection detects molding imperfections or contamination. Precision measurement confirms compliance with API 6A specifications. Material testing validates compound properties and certification. Singapore manufacturers implement comprehe... https://globalsealstech.com/product-category/oil-gas-seals/api-6a-wellhead-equipment-seals/