#326 1-5/8"ID x 2"OD 0.210" Cross Section Nitrile Standard O-Ring / OUTSIDE DIAMETER: 2.0 INCHES NOMINAL TEMP RATING: -40.0 DEG FAHRENHEIT AND 250.0 DEG FAHRENHEIT CROSS-SECTIONAL HEIGHT: 0.188 INCHES NOMINAL CENTER HOLE DIAMETER: 1.625 INCHES NOMINAL END ITEM IDENTIFICATION: F-15SA COLOR: BLACK MATERIAL: RUBBER BUTADIENE NITRILE