123 ADVANCAP™ a d v a n c a p ™ O-ring Energized Seals IMPROVED SYSTEM PERFORMANCE The Advancap™ rod and piston seals are designed to provide a cost-effective cap seal solution that prevents extrusion and eliminates O-ring spiral failure in dynamic applications. Each seal combines a cap made from Avalon®, our PTFE material, with an elastomeric energizer, and is available in configurations for zero, \ one or two back-up ring glands per AS4716. Custom configurations The Advancap can replace low-friction, O-ring swivel seals that Advancap Piston leak, nibble and/or exhibit excessive friction. FEATURES & BENEFITS Advancap Rod d a t a • Avalon cap interfaces with the dynamic surface resulting in lower friction and elimination of spiral failure, which leads to better system performance p r o d u c t are also available. • Specially designed Avalon cap cradles O-ring, protecting it from extrusion when under pressure • Designed for AS4716 gland and utilizes standard O-rings resulting in overall cost savings APPLICATIONS • Flight controls (e.g., ailerons, spoilers, airbrakes, etc.) w w w. g t w e e d . c o m © 2007, Greene, Tweed all rights reserved All trademarks are property of their respective owners. 04/07-GT DS-US-AS-015 • Utility and positioning actuators in landing gear systems

ADVANCAP™ CONFIGURATIONS Rod/Gland Diameter Change Piston/Gland Diameter Change Note: Gland radii, finishes, concentricity and groove wall angle to conform to MIL-G-5514/AS4716. See Capabilities section for more information. Gland Dimensions Note: Refer to the dimensional tables for more information. Squeeze Considerations The addition of any cap to an O-ring gland will increase O-ring squeeze and gland occupancy. This may result in excessive friction, unsatisfactory service life or installation difficulty. By modifying the gland diameter, as shown in the table above, these problems can be alleviated...

ADVANCAP™ PART NUMBERING SYSTEM Material Designator Tables The part numbering system requires the use of the material designator tables found in the next column. For nonstandard designs contact GT engineering. Dash size N = Notched caps Cap materia U = Unnotched caps designator Part Numbering Example zero back-up Bore diameter gland width minimum Fluoroca rbon Contact your local Greene, Tweed representative for specific recommendations to suit higher performance requirements. See GT Surface Finish guidelines. Statements and recommendations in this publication are based on our experience and knowledge...