Engineering Downloads & Resources
Free technical PDFs, size charts and RFQ templates for design engineers and procurement teams.
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.
Standards
AS568 O-Ring Size Chart
Complete AS568 dash number reference with inside diameter and cross-section in inches and millimeters. 349 sizes.
Download PDFISO 3601 Metric Size Chart
Full ISO 3601-1 metric O-ring size listing with ID and CS in millimeters. Cross-reference to DIN 3771.
Download PDFJIS B2401 Size Chart
Japanese Industrial Standard B 2401 P-series, G-series, S-series and V-series size reference.
Download PDFDIN 3771 Size Chart
German metric O-ring size reference covering common A, B and C series dimensions for industrial sealing.
Download PDFBS 4518 Size Chart
British Standard O-ring size chart for metric sealing dimensions used across UK and export markets.
Download PDFSMS 1588 Size Chart
Swedish SMS 1588 size chart for hygienic process and Scandinavian sealing requirements.
Download PDFNF T47-501 Size Chart
French metric O-ring size reference for hydraulic, automotive and industrial engineering teams.
Download PDFJASO F404 Size Chart
Japanese automotive O-ring size chart for fuel, coolant and air-conditioning sealing systems.
Download PDFGeneral Metric O-Ring Size Chart
A practical general metric size reference for non-AS568 projects and custom engineering requirements.
Download PDFTechnical Guide
Chemical Compatibility Chart
A-to-D compatibility ratings for NBR, FKM, EPDM, VMQ, PTFE, HNBR, PU, CR, AFLAS and FEP Encapsulated across 50+ industrial chemicals.
Download PDFO-Ring Design Handbook
A 24-page engineering handbook covering groove design, compression rates, failure analysis, installation best practices and material selection.
Download PDFProcurement
O-Ring RFQ Template
A ready-to-use RFQ template with all the technical fields we need to quote quickly: material, dimensions, quantity, application and certification requirements.
Download PDFFrequently Asked Questions
Are these downloads really free?
Yes. All size charts, technical guides and RFQ templates are provided free of charge with no registration required.
Can I share these PDFs with my engineering team?
Absolutely. You are welcome to distribute these documents internally within your organization.
How often are the size charts updated?
We update our standards charts annually or whenever a new revision of AS568, ISO 3601 or JIS B2401 is published.