Natural rubber primer is a 2 component primer designed to be used on rubber with a buff back. Once the 2 components are mixed it can be reliably used up to 14 days. The Acidic component deoxidises the buffed rubber surface and leaves a ready to bond surface behind for excellent bonding. We recommend to apply NR Primer to all buff back surfaces and skives before bonding. NR Primer comes in 4L PET drums together with a 250g acidic granulate.