For larger bore applications in the 3.437" to 4.813" range, Product Code 10 locks are not stocked; Rebco supplies the Product Code 18 Safety Spring version as the standard first option for those sizes. Where high flow rates create vibration risk, the Product Code 17 Interference Hold Down version is available from 1.781" through 2.875", providing a positive latching structure that resists accidental unlocking under dynamic well conditions. All sizes are constructed from Norm Alloy, which is certified for H2S service per NACE MR-01-75, Latest Revision. The ROTR is run using the dedicated ROTR Running Tool and retrieved using the ROTGR Pulling Tool.

Like the ROTR, the ROTRN is available in three product code configurations: the standard Product Code 10 for sizes 1.500" through 2.875"; the Product Code 17 Interference Hold Down version for 1.781" through 2.875", which provides a positive latching structure minimizing the risk of the lock inadvertently releasing due to vibration at high flow rates; and the Product Code 18 Safety Spring version for 3.437" through 4.813", where the Shear Pin is pre-installed prior to running and lodges between the Expander Sleeve and Key Retainer once the lock is set. All assembly numbers, running tools, and pulling tools in the ROTRN series mirror those of the ROTR series. All sizes are available in a variety of materials suitable for downhole conditions.