This is a by-product of the Latex centrifuging process. This grade of Solid rubber can be used as a filler in products such as shoe soles, rubber bands, car mats, etc. There are no standard technical specifications for this grade, hence, it is categorized under VGR (Visually Graded Rubber).

Characteristic Skim BlockSample ASample BSample CSample D
Dirt content on 44u aperture (max %wt)0.0380.010.0050.005
Ash content (max %wt)0.381.321.061.52
Nitrogen (max % wt)2.350.540.380.32
Volatile matter (max %wt)1.390.521.801.76
Wallace rapid plasticity (Po) min475030.528
Plasticity retention index (PRI) min %40.44532.814.3
Mooney Viscosity ML(1'+4') 100 C93.786.071.391.9