BS 2752:2003 specifies compositional and physical property requirements for five chloroprene rubber compounds of hardness range 40 IRHD to 80 IRHD, designated C40, C50, C60, C70 and C80.
These compounds are intended for the manufacture of items in the form of extrusions, mouldings, moulded or calendered sheet and for items cut or punched from sheet.
It is emphasized that this standard covers chloroprene rubber compounds for general purpose applications and does not require the special compounding which is necessary to achieve improvement in any one specific property.