Round Gasket O-ring, Teflon encapsulated Viton rubber gasket. Fits PALL CBFP11 and CBFP12, FSI BFN-11 / BFN11 and BFN-12 / BFN12 filter housings, GASKET 1112-V-TFE-ENC-BFN, 1112-TFE-ENC-BFN. Ultra Chemical Resistant FEP-Encapsulated Viton Rubber O-Ring. EGR30090VT EGR-30090-VT EGR-30090VT EGR30090-VT