October 2026: New Standards for Pump Packings and Fastener Coatings in Mechanical Systems

October 2026 marks an important milestone for professionals involved in mechanical systems and components, with the publication of two significant international standards. These updates refine the expectations for critical hardware—from gland packings in pumps to coating systems applied to fasteners—helping organizations maintain safety, performance, and compliance in demanding industrial contexts. Industry leaders and quality managers should take note: understanding and implementing these standards can offer a competitive edge and reduce operational risk.

Overview

Mechanical systems and components form the backbone of countless industrial and infrastructure applications. The quality and reliability of these components—from seals and packings to fasteners—determine the uptime, safety, and cost-effectiveness of pumps, mixers, production lines, and countless other systems. Standards play a critical role by providing clear, consensus-driven requirements for materials, construction, testing, and performance, ensuring consistency and safety across the supply chain.

In this article, we dissect two vital standards published in October 2026:

• EN 18183:2026: Specification for gland packings manufactured from yarns and ribbons for pumps and similar mechanical equipment.
• ISO/TS 25393:2026: Assessment of coating systems on fasteners, complementing and extending CQI-11.

Engineers, compliance officers, and procurement leaders will gain concise yet technical insight into the scope, requirements, and industry impact of each standard, empowering them to make informed decisions about adoption and compliance.

Detailed Standards Coverage

EN 18183:2026 – Specification for Gland Packings in Pumps

Pumps – Specification for Gland Packings Manufactured from Yarns and Ribbons

The newly published EN 18183:2026 provides a definitive framework for describing and qualifying gland packings made from yarns and ribbons, specifically designed for use in mechanical equipment such as pumps and mixers. Gland packings are essential for producing reliable seals, preventing fluid leakage, and ensuring equipment longevity in industrial processes.

Scope and Application EN 18183:2026 applies to packings crafted from both natural and synthetic yarns, as well as various ribbon materials, expressly excluding products used for thermal insulation. This standard targets:

• Packing manufacturers
• Original equipment manufacturers (OEMs) of pumps and mixers
• End users responsible for maintenance and procurement

Key Requirements and Specifications The standard details a unique coding system for identifying the composition and properties of gland packings, including:

• Generic and specific yarn types (e.g., ramie, cotton, glass, PTFE, graphite)
• Impregnants and lubricants used, with specified minimum weights
• Reinforcements and density ranges
• Construction methods, minimum thread (track) counts, and packing shape (typically square cross-section unless otherwise specified)

Physical quality requirements are defined for both the base yarns and the finished packings, with criteria including:

• Tensile strength and elongation at break
• Shrinkage for synthetic yarns (referencing ISO 18067)
• Creep resistance (particularly for PTFE and expanded graphite groups)
• Lubricant content by mass, determined with specific test methods
• Dimensional accuracy and size tolerances

Further, the document stipulates packaging and marking requirements to ensure traceability and safe handling. Notably, it prohibits the use of introduced asbestos fibers, in line with Annex XVII of the REACH regulation—a key consideration for compliance in the European Union.

Implementation & Practical Implications Organizations adopting EN 18183:2026 benefit from standardized procurement and specification practices, reducing miscommunication and ensuring suitable performance in critical sealing applications. The coding system simplifies cross-comparison and quality assurance, while mandated physical tests and labeling support consistent product quality and traceability across supply chains.

Key highlights:

• Comprehensive material and lubricant coding for accurate specification
• Asbestos-free requirements for worker and environmental safety
• Detailed test methods for verifying lubricant content, size, and mass
• Essential guidance for both manufacturers and pump OEMs
• Improved traceability via standardized packaging and marking

Access the full standard:View EN 18183:2026 on iTeh Standards

ISO/TS 25393:2026 – Coating System Assessment for Fasteners

Fasteners — Coating System Assessment — Complementary and Additional Aspects to CQI-11

The ISO/TS 25393:2026 technical specification is a transformative document for the assessment of coating systems on fasteners. It addresses the limitations of the widely adopted CQI-11 (used especially in the automotive sector) by providing additional, fastener-specific guidance—crucial for suppliers, quality managers, and engineers in high-reliability industries.

Scope and Application This standard focuses on electroplating process evaluation for fasteners (bolts, screws, nuts, washers), establishing requirements and clarifications not fully covered by CQI-11. It specifically targets:

• Fastener manufacturers
• Electroplaters and surface coating providers
• Chemical suppliers in plating processes
• Purchasing and procurement professionals in automotive, machinery, and general manufacturing

Key Requirements and Specifications Key pillars of the standard include:

• Detailed measures to mitigate internal hydrogen embrittlement (IHE) in steel fasteners, aligned with ISO 4042:2022, ISO/TR 20491, and ISO 16047
• Baking process documentation and verification for various fastener classes (bolts, nuts, washers, case-hardened screws)
• Applicability matrix, specifying which CQI-11 requirements are Substituted, Added, or Not Applicable for fasteners
• Clear thresholds for process verification, product testing, and baking based on mechanical properties and application scenarios
• Expanded requirements for specialized applications (e.g., high-hardness washers and preloaded screws)

Annexes provide further detail for testing and quality assessment:

• Chemical composition and coating thickness criteria
• Gaugeability and assembly requirements to ensure correct fit
• Torque and clamp force testing for functional validation
• Corrosion resistance procedures for long-term durability

Practical Implications By integrating these requirements, organizations can demonstrate comprehensive control over fastener coating processes, ensuring not only initial quality but ongoing performance in real-world applications. This is particularly vital in industries such as automotive and heavy machinery, where coating failures can lead to catastrophic equipment loss or safety concerns.

Key highlights:

• Enhanced focus on hydrogen embrittlement prevention for steel fasteners
• Complementary guidance to CQI-11, tailored to the specific needs of fastener applications
• Alignment with leading international standards, including ISO 4042, ISO/TR 20491, and ISO 16047
• Robust testing and quality assurance frameworks for electroplated fasteners
• Applicability across the entire coated fastener supply chain

Access the full standard:View ISO/TS 25393:2026 on iTeh Standards

Industry Impact & Compliance

How Do These Standards Affect Mechanical Components Businesses?

Adoption of EN 18183:2026 and ISO/TS 25393:2026 signals a commitment to best practice in component specification and process control. For manufacturers, these standards enforce stricter quality measures and clearer communication throughout the supply chain.

• OEMs and end users: Can specify components with greater confidence, knowing that materials, lubricants, and process controls meet rigorous benchmarks for safety and performance.
• Manufacturers: Benefit from codified methods of component identification, material selection, and process documentation—reducing error, labor, and time overruns.
• Quality assurance teams: Gain from prescriptive testing methods that simplify compliance audits and facilitate swift issue resolution.
• Procurement and supply chain professionals: Can compare supplier offerings more objectively, driving quality improvements and, potentially, cost efficiency.

Compliance Considerations and Timelines

Organizations in regulated sectors (such as industrial manufacturing and automotive supply chains) should anticipate that these standards will be referenced in technical specifications and contracts within months of publication. Proactive adoption—via staff training, supplier briefings, and updating procurement documentation—will smooth the path toward compliance and reduce transition costs.

• Timelines: Immediate relevance for new projects; advisable for existing installations and products at next review cycle.
• Documentation: Update internal technical specifications, supplier quality agreements, and tender documents to reference the applicable standards.
• Risk of non-compliance: Increased likelihood of rejected components, contract delays, and—especially in Europe—potential regulatory or safety liabilities.

Benefits of Standard Adoption

• Increased equipment reliability and reduced maintenance costs
• Enhanced worker safety and environmental compliance (notably with asbestos-free packings)
• Improved global market access, thanks to harmonization with international regulations
• Streamlined supply chain communications and fewer disputes over component suitability

Technical Insights

Common Technical Requirements

Both standards emphasize detailed technical documentation and rigorous physical quality controls:

• Documentation: Clear, itemized specifications for materials, components, and processing steps.
• Testing: Consistent requirements for lubricant content, dimensions, mechanical properties (tensile strength, elongation, density), and functional performance (torque, corrosion resistance, clamp force).
• Process Validation: Enhanced controls over production variables—particularly in electroplating—such as acid immersion times, baking temperatures, and handling to prevent embrittlement.

Implementation Best Practices

1. Conduct a Gap Analysis: Evaluate current internal processes against new standard requirements; prioritize updates in material selection, supplier qualification, and documentation protocols.
2. Update Training Programs: Ensure technical and quality staff are fully versed in updated coding systems, test methods, and documentation expectations.
3. Collaborate with Supply Partners: Work with OEMs, material suppliers, and processors to clarify requirements and agree on quality assurance practices.
4. Perform Regular Audits: Integrate new testing regimes for incoming materials and finished goods, particularly around mechanical testing and process verification for coatings.
5. Leverage Traceability Features: Make full use of updated labeling and marking requirements to enhance batch control and facilitate recalls, if necessary.

Testing and Certification

Both standards require specific, referenced test methods:

• EN 18183:2026: Detailed tests for lubricant content, yarn shrinkage, tensile properties, and finished packing density, often referencing ISO and related technical manuals.
• ISO/TS 25393:2026: Incorporates requirements from ISO 4042 and related documents for coating thickness, hydrogen embrittlement risk, and product performance—the results of which should be documented within the organization’s quality system.

Certification is not mandatory unless specified by contract or regulatory obligations, but documented conformity to these standards—demonstrated via internal or third-party audits—will strengthen a supplier’s reputation and market standing.

Conclusion & Next Steps

The October 2026 updates to international standards in mechanical systems and components deliver major advances in safety, performance, and supply chain clarity. EN 18183:2026 systematically addresses gland packing materials, coding, and documentation, while ISO/TS 25393:2026 arms fastener producers and users with robust coating process assessments and embrittlement safeguards.

Key Takeaways:

• Immediate relevance for manufacturers, engineers, quality managers, and procurement specialists in mechanical and industrial sectors
• Standards provide unified frameworks for component specification, traceability, and performance verification
• Adoption brings operational, reputational, and compliance benefits

Recommendations:

1. Review the full text of each standard to ensure comprehensive understanding and compliance.
2. Update technical specifications, procurement documents, and in-house quality programs accordingly.
3. Leverage new requirements for improved safety, reliability, and supplier communications.
4. Subscribe to standards updates through platforms like iTeh Standards to stay ahead in this fast-moving industry.

Organizations that proactively engage with these standards position themselves at the forefront of safe, reliable, and globally competitive mechanical systems and components. Stay informed, stay compliant, and ensure your operations set the benchmark for quality and performance in the mechanical sector.