Description Description Freudenberg Sealing Technologies (formerly Tobul) oil port body for TRB30, TBRT30, TBR50, and TBRT50 Bladder accumulator series carbon steel, 2" NPT Female, phosphate coated, optional, used for inflow/outflow for fluid and pipe connections. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Literature & Docs Accessories