Which standard should be chosen for external mechanical seals?
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In the API682-2014 standard, mechanical seal types A/B/C are all of the internal type; if an external mechanical seal is chosen, which standard should be applied?
Here are a few recommendations: GB/T 33509-2017 General specifications for mechanical seals; DIN EN 12756:2001 Mechanical seals – Principal dimensions, design and material codes (DIN 12756 is an updated version of DIN EN 24960:1992 Mechanical seals – Types, dimensions, seal arrangements, designation and material code); JIS B 2405:2003 Mechanical seals – General requirements