1. ABRASION RESISTANCE TEST Test Conditions Cutlass Rubber Bearing TEST RESULTS – AT A GLANCE AR® composites are less damaging to the shaft or shaft sleeve in abrasive media over traditional bearing materials such as cutlass rubber. Greene, Tweed Tel: +1.281.821.2094 PetroChem & Power Tel: +1.800.820.9005 Houston, TX, USA Tel: +1.281.821.2696 Statements and recommendations in this publication are based on our experience and knowledge of typical applications of this product and shall not constitute a guarantee of performance nor modify or alter our standard warranty applicable to such products. © 2006, Greene, Tweed all rights reserved All trademarks are property of their respective owners. 08/07-GT DS-US-PP-003 The chart shows percent weight change (loss) per hour of Greene, Tweed’s AR materials compared to traditional materials. As shown in the data, Greene, Tweed’s ARHT and AR1 are less damaging to the shaft or shaft sleeve in abrasive media than traditional bearing materials. BEARING TEST RESULTS BEARING TEST RESULTS Product Test Laboratory

© 2006, Greene, Tweed all rights reserved All trademarks are property of their respective owners. 08/07-GT DS-US-PP-003 BEARING TEST RESULTS BEARING TEST RESULTS TEST RESULTS - AT A GLANCE AR®1/ AR®HT: No change in cross section, inner diameter, or weight loss. Bearings and rod look practically new. Grooves completely filled with excess material. If emptied weight loss values would clearly increase >1%. Cutlass Rubber: Only for 20 seconds running AR bearing materials proved to have good dry run capability. They resist abrasion from suspended solids and the embedding of sharp abrasive particles...