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O-Ring Extrusion Gap Chart: Pressure vs Clearance Limits | O-Ring Supply Co

Extrusion gap limits for O-rings by pressure, hardness and backup rings. Diametral clearance table for hydraulic static and dynamic glands in mm. Published by O-Ring Supply Co, an o-ring and hydraulic seal supplier.

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Backup Ring Standards Guide: AS8791, AS5781, AMS3678 & ASTM | O-Ring Supply Co

Backup ring standards reference: AS8791 and AS5781 aerospace backup ring specs, AMS3678 materials, and ASTM sized tolerance practice. Explains when extrusion gap needs a backup ring, PTFE vs elastomer options, and gland design checks.