Question
Mon August 22, 2011 By: Pooja R

What is the difference between Buna S and Buna N ?......:)

Expert Reply
Tue August 23, 2011
Styrene-Butadiene or Styrene-Butadiene-Rubber (SBR) is a synthetic rubber copolymer consisting of styrene and butadiene. It has good abrasion resistance and good aging stability when protected by additives, and is widely used in car tires, where it may be blended with natural rubber.
The material was initially marketed with the brand name Buna S. It derives this name from: Bu for butadiene, Na for sodium
Nitrile rubber, also known as Buna-N, Perbunan, or NBR, is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene.
Home Work Help