Backing ring without vent hole for CTRB 6x11 class- E to NEI Drg. No. PESD 6085 Rev. D or latest part No. 09 or as per Drg. No. PESD 6088 Rev. B or latest and also confirming RDSO STR- AB/ RB- 39 2002 ( Rev. 4 ) or latest ( Warranty Period

Kota, Rajasthan, India