Industrial sealing components must meet the technical requirements established for their intended applications. Material selection, dimensional accuracy, product construction, and inspection methods all contribute to whether a product is suitable for a particular installation. The quality arrangements below apply across product families, with the specific scope confirmed against the product, material, and applicable standard for each order.
Incoming Material Verification
In-Process Quality Checks
Finished Product Inspection
Material & Performance Testing
Inspection Documentation
Customer-Specific Requirements
Each checkpoint applies where relevant to the product family and confirmed order requirements. The standards and tests cited below are examples; the applicable specification for a given order should be confirmed before production.
Raw materials are checked against purchase specifications and product requirements. Verification may include material identification, dimensions, appearance, supplier documentation, and applicable certificates.
For metallic gaskets, material certificates per EN 10204 3.1 are available with each order; 3.2 certificates can be arranged upon request. Heat-number traceability links the finished gasket back to the mill test certificate.
Production checks focus on characteristics that affect the finished product: dimensions, profile, material construction, component consistency, and other product-specific requirements.
For spiral wound gaskets, winding construction, spot welds, and terminal welds are checked against the applicable construction requirements. For API 6A ring gaskets, Brinell hardness is verified so that the gasket hardness remains below the flange hardness — API guidance suggests the gasket should be approximately 30 HB lower than the flange material to ensure sufficient deformation without damaging the flange facing.
Finished products may require dimensional measurement, visual inspection, quantity verification, packaging checks, and additional testing where applicable. Acceptance criteria are defined before production for orders with special tolerances or inspection requirements.
For spiral wound gaskets, dimensions and tolerances are checked against ASME B16.20. For API 6A ring gaskets, critical ring dimensions — ring width, ring height, and outer diameter — are measured against API 6A published values. API 6A permits sampling, but buyers can specify 100% dimensional inspection for critical service if required.
Testing scope depends on the product family and material. The methods below are commonly referenced for industrial sealing products.
For projects requiring supporting records, buyers should identify the required documents before ordering. Depending on the product and agreement, documentation may include inspection records, material certificates, test reports, or third-party inspection results.
For metallic gaskets, EN 10204 3.1 material certificates are commonly included with each order, with 3.2 available upon request. For spiral wound gaskets, dimensional inspection records can be provided against ASME B16.20. Third-party inspection reports and regulatory documents are arranged only where applicable and available for the specific product and order.
If your project requires a defined inspection plan, material traceability, special tolerances, or third-party inspection, provide these requirements during the quotation stage. Our team can confirm what can be provided for the specific order.
Examples of customer-specific arrangements include: 100% dimensional inspection instead of sampling for API 6A ring gaskets; EN 10204 3.2 certificates with independent verification; NACE MR0175 / ISO 15156 material documentation for sour service; and FDA 21 CFR 177.1550 migration test reports for PTFE gaskets in food-contact applications.
The quality arrangements above are intended to give buyers verifiable records and a clear basis for acceptance — not just a description of process.
Material certificates and inspection records can be linked to the specific order, supporting audit and incoming-goods verification.
Confirmed specifications and inspection criteria are reused for repeat orders, reducing variability between batches.
Third-party inspection and testing can be arranged where required by the project, with scope confirmed before production.
Required certificates, test reports, and inspection records are identified and confirmed before dispatch.
Detailed pages on manufacturing capabilities, certification, OEM services, factory operations, and production flow.
Share your specification, applicable standards, and inspection requirements so that the relevant quality arrangements can be evaluated before production. For projects requiring specific documentation, third-party inspection, or material traceability, include these requirements in your RFQ.
