Round Gasket O-ring, Teflon encapsulated Viton rubber gasket. Fits PALL FSPN-20 / FSPN20 and FSPN35 / FSPN35 filter housings, GASKET 2035-V-TFE-ENC-FSPN, 2035-TFE-ENC-FSPN, 2035-TFE-ENC-FSP, 2035-V-TFE-ENC-FSC, 2035-TFE-ENC-FSC. Ultra Chemical Resistant FEP-Encapsulated Viton Rubber O-Ring. EGR30002VT EGR-30002-VT EGR-30002VT EGR30002-VT