... .Seal material: PTFE 4.Flow tate: 0.001-100U Technical data of cartridge filter housings as the bellowing:Housing body material:ss304 ... : 1piece ,2piece,3piece,5piece,7piece,9piece,11piece,13piece,15piece Length of cartridges:10inch,20inch,30inch,40inch Seal material: PTFE Operating press ...