Support version: With vulcanised and threaded failsafe
Body material: Rubber compound NR/SBR
Hardness tolerance: +/- 5 SH
Metal part: Zinc-plated steel sheet
Specific features: The SCT version, identical to the SC in external dimensions, features an anti-tear buffer inside the dome (see photo). This absolutely prevents the dome from detaching from the base, even in the presence of strong pulls and vibrations, such as those generated by the initial start-up of a powerful combustion engine.