Bond Type:

Metal
   

Metal   bond between the abrasive grains and between the grains a metal   substrate.  Metal bond systems are used mainly for superabrasive or   tungsten carbide grit products. Three metal bond types are sintered, MSL and   electroplated metal bond systems. Sintered metal bond systems are used when a   thicker layer of superabrasive is required.  Metal single layer (MSL)   wheels consists of a specialized braze layer that forms a single   layer of superabrasive and bond. The electroplated bond system   is used to produce fine grit superabrasive products. 
   

Resin / Plastic
   

Bonded   abrasive product with a resin, resinoid or plastic bond system between   the abrasive grains.
   

Rubber
   

Bonded   abrasive product with a rubber or elastomer bond system between the   abrasive grains.
   

Shellac
   

Bonded   abrasive product with a shellac bond system between the abrasive grains.
   

Silicate /   Oxychloride
   

Bonded   abrasive product with a bond system using a silicate, magnesium   oxychloride, magnesite or Sorel  cement. These low strength bonds keep heat generation to a minimum, but may   lack the life and durability of vitrified or resin bonded wheels. The chloride   in the oxychloride may provide a grinding aid action.
   

Vitrified
   

Bonded   abrasive product with a vitrified or glass bond system between the abrasive   grains.
   

Other
   

Other   specialty, proprietary or patented bond type.