Engineering Downloads & Resources

Use these free resources to speed up your O-ring specification process. All downloads are provided in PDF format and are updated regularly to reflect the latest standards and material data. Our download library is curated specifically for engineers, procurement professionals, and quality managers who need authoritative reference data at their fingertips. Every document has been reviewed by our engineering team for technical accuracy and practical utility. We do not require registration, email subscription, or payment to access these resources—simply click and download. The size chart collection covers the nine most commonly referenced international standards, with inside diameter and cross-section dimensions shown in both metric and imperial units where applicable. Each chart includes tolerances per the relevant standard, material recommendations, and cross-references to related standards. These charts are suitable for inclusion in internal engineering manuals, supplier quality files, and procurement specifications. Beyond size charts, we offer a comprehensive chemical compatibility reference that rates common elastomers against over 50 industrial chemicals and fluids. This guide helps you narrow material candidates quickly before requesting formal material data sheets or conducting your own compatibility testing. The ratings are based on industry-standard immersion tests and field experience, providing a reliable starting point for material selection. The O-Ring Design Handbook is a 24-page primer covering the fundamentals of groove design, compression rate calculation, failure mode identification, and installation best practices. It is written for mechanical engineers who may not specialize in sealing technology but need to specify O-rings correctly in their designs. The handbook includes worked examples, tolerance tables, and a quick-reference troubleshooting guide. For procurement teams, our RFQ template captures all the technical fields we need to quote accurately and quickly. Using this template reduces back-and-forth communication and ensures that critical parameters such as operating temperature, fluid media, and certification requirements are not overlooked. We encourage customers to include this template in their supplier onboarding documentation. All PDFs are optimized for printing on A4 and US Letter paper. They can also be viewed on tablets and smartphones for convenient reference in the field or on the shop floor. If you need a document in a different format or language, contact us and we will accommodate the request where possible.