Repalcement septum for Tedlar bag TDLC31Z Back Catalog number: HEDTDLC-S Availability: In the manufacturer's stock Price on request - + Recommended U-COV10 O-Ring, low-emission,size 010, pk10(e2/e3 systems) Price on request P-CPU10 Unions, for VOC-Mole cap assembly,pk10 Price on request U-COV35 O-Ring, low-emission, size 035,pk10 Price on request