FRM O-Ring/Seal Package – 6 O-Rings (1 1/4″ID Viton), 1 O-Ring (1 5/8″ID Viton), 2 O-Rings (2 3/8″ID Viton), 1 O-Ring (2 3/8″ID BUNA), 1 Lower Cassette Seal, 1 Upper Cassette Seal