Engineering Support
Technical Resources
Reference material for specifying, designing around and troubleshooting O-ring seals — built from FITCO's applications-engineering experience across our customer base.
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O-Ring Size Chart
Searchable reference covering AS568 dash sizes and common metric O-ring dimensions, with inside diameter, cros…
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Chemical Compatibility Guide
Elastomer-versus-chemical compatibility reference across NBR, FKM, EPDM, silicone, HNBR and FFKM, intended as …
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Gland Design Guidelines
Groove-width, groove-depth, squeeze and stretch guidance for static and dynamic O-ring glands, including consi…
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O-Ring Installation Guide
Practical guidance on lubrication, stretch limits, avoiding pinching or twisting during assembly, and protecti…
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O-Ring Failure Modes
Visual and diagnostic guide to common O-ring failure patterns — extrusion, compression set, chemical attack, e…
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