SVR CV50 is a constant viscosity grade. It is produced by adding hydroxylamine neutral sulfate (HNS) and peptizer to the field latex before coagulation with acid. The coagulum is allowed to mature for some hours, reduced to crumbs by passing through a crusher, crepers, a shredder, dried and pressed into bales. The hydroxylamine inhibits the storage hardening reaction in natural rubber, which leads to an increase in its Mooney viscosity. Mooney vicosity (MV) range is 50 ± 5.
Vibration mountings for engines and machinery
Large-truck tire treads
Conveyor belt covers
Rubber - metal bonded components
Low viscosity rubber
Dirt (retained on 45 micron aperture)
Initial Wallace plasticity (Po)
Plasticity Retention Index (PRI)
50 ± 5
**At time of production, ML 1+4 (100°C)
33.33 kg bale/36 bales, 35 kg bale/36 bales, 20 kg bale/60 bales per crate or shrink-wrapped pallets
Shrink-wrapped on wooden or metal pallets
Normal 0.03 mm PE bag wrapper with melting point of 109°C max.