Round Gasket O-ring, Teflon encapsulated Viton rubber gasket. Fits FSP20 FSP35 Full Steam Jacketed filter housings, GASKET 2035-V-TFE-ENC-FSP-FSJ 2035-TFE-ENC-FSP-FSJ. Ultra Chemical Resistant FEP-Encapsulated Viton Rubber O-Ring. EGR30034VT EGR-30034-VT EGR-30034VT EGR30034-VT