Round Gasket O-ring, Teflon encapsulated Viton rubber gasket. Fits PALL FSPN-40 / FSPN40 and FSPN85 / FSPN85 filter housings, GASKET 4085-V-TFE-ENC-FSPN, 4085-TFE-ENC-FSPN, 4085-V-TFE-ENC-FSC, 4085-TFE-ENC-FSC. Ultra Chemical Resistant FEP-Encapsulated Viton Rubber O-Ring. EGR30007VT EGR-30007-VT EGR-30007VT EGR30007-VT