Tesnit BA 203 packing, Packing Tesnit Ba 203 Blue . BA-U, BA-BA-50, CF, BACF-4000, Grafilit ® SF, Grafilit ® Grafilit ® SL, SP and others. TESNIT ® BA-203 is a special gasket materials based on fibre and aramide NBR nitrile rubber. It has good resistance to water, gas, oil and fuel. TESNIT ® BA-203 includes secondary applications load. Materials approved by Germanischer Lloyd. Basic: Aramide fibers, NBR. General properties and applications: Oil Resistant b