The mechanical load capacity of the O-ring material can be easily read from the table.
Analysis of the table
In general, it can be said that a high elongation at break results in a low tensile strength (e.g. VMQ (silicone) or FVMQ). Against this background, NBR and HNBR stand out in particular.
HNBR and NBR O-rings have both a very high elongation at break and excellent tear resistance. This is also the reason why NBR or HNBR O-rings are used when there is a high mechanical load.
Note: The FEP/FKM and PTFE O-rings must be considered separately in this table, as they are not elastomers like the other materials. FEP encapsulated O-rings are a combination product made of thermoplastic (FEP encapsulation) and elastomer (FKM core). PTFE is a duromere.