Buna CB 70  Lithium Butadiene Rubber.
The rubber is protected by a stabiliser system which is permitted for use under FDA regulation §177.1640, the recommendation VI of the Federal Institute for Risk Assessment and the Commission Directive 2002/72/EC respectively its further amendments including 2004/19/EC.

Mooney (1+4 @100°C) : 69.5

SV (5.43% in toluene) : 250 cp