Page 9 of JE Pro Seal Catalog by JE Pistons

10 ULTRA FINISH RINGS (UFR) JE Pro Seal Ultra Finish Rings (UFR) are machined to the most exacting tolerances in the industry. All Ultra Finish rings are lapped to within +/-.000050" axial height and precision turned to .0015" radial width. Designed to compliment our Ultra Groove ring groove process available on JE custom pistons, these rings are used for the most demanding high performance applications that require extremely tight clearances for maximum sealing capabilities. Featuring unprecedented flatness and axial surface finishes less than 4 inRa, the Ultra Finish process is available for all JE Pro Seal rings. WHY RING FLATNESS IS IMPORTANT Uniform ring flatness allows tighter ring to groove clearance, thus promoting better sealing properties. An uneven ring axial height allows combustion gases to enter the gaps between the ring and ring groove, increasing the chances of higher blowby and oil consumption. SURFACE FINISH RADIAL THICKNESS +/-.0015" APPLICATION SPECIFIC COATINGS AND MATERIAL AXIAL HEIGHT RING FINISHES AND OPTIONS UFR +/-0.000050" 4 inRa CFR +/-0.00015" 4 inRa CTR +/-0.00015" Standard Ring Process Axial Height Surface Finish CRITICAL TOLERANCE RINGS (CTR) JE Pro Seal Critical Tolerance Rings (CTR) are held to +/-.00015" axial height and an industry standard base metal surface finish ( 25 inRa). An alternative to our Critical Finish rings, JE Pro Seal CTRs are available in many of our most popular ring types. Call your JE Pro Seal sales representative for availability. CRITICAL FINISH RINGS (CFR) JE ProSeal Critical Finish Rings (CFR) present an alternative to Ultra Finish Rings with the same surface finish 4 inRa) on lapped top and bottom ring sides as the UFR held to within +/-.00015" axial thickness. CUSTOM CHAMFERING TO MAKE ANY TORSIONAL RING CUSTOM BACK-CUTTING TO ANY DESIRED RADIAL THICKNESS CUSTOM DYKES RINGS (WITHIN DYKES STANDARDS) CUSTOM AXIAL HEIGHTS WITH UFR, CFR, OR CTR FINISHES RING SEALING GAP CUSTOM RING OPTIONS JE Pro Seals ring manufacturing capabilities can provide custom ring solutions to your specific high performance needs. Our Custom Ring Department is armed with the latest equipment for design, manufacturing and analysis. JE Pro Seal offers custom back-cutting to any desired radial thickness, custom chamfering to convert any neutral ring into a torsional ring. JE Pro Seal can also manufacture custom Dykes rings, and machine special axial heights on any ring. If you cant find the ring you're looking for, give your JE sales representative a call.

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