Resistant To Acid, To Gasoline, To Heat And OilManufactured; Made Of Nitrile Rubber, Not Suitable For Drinking WaterScope Of Delivery: 20 O-Rings 3 Mm, Thickness 1.5 Mm | 20 O-Rings 4.5 Mm, Thickness 2 Mm | 18 O-Rings 5 Mm, Thickness 2 Mm | 23 O-Rings 7 Mm, Thickness 1.5 Mm23 O-Rings 10 Mm, Thickness 1.5 Mm | 23 O-Rings 13 Mm, Thickness 1.5 Mm | 14 O-Rings 10 Mm, Thickness 2.5 Mm | 13 O-Rings 11 Mm, Thickness 2.5 Mm | 14 O -Rings 13 Mm, Thickness 2.5 Mm13 O-Rings 14 Mm, Thickness 2.5 Mm | 14 O-Rings 16 Mm, Thickness 2.5 Mm | 14 O-Rings 18 Mm, Thickness 2.5 Mm | 13 O-Rings 19 Mm, Thickness 2.5 Mm14 O-Rings 21 Mm, Thickness 2.5 Mm | 13 O-Rings 22 Mm, Thickness 2.5 Mm | 10 O-Rings 18 Mm, Thickness 3.5 Mm | 10 O-Rings 20 Mm, Thickness 3.5 Mm | 10 O -Rings 22 Mm, Thickness 3.5 Mm10 O-Rings 23.5 Mm, Thickness 3.5 Mm | 10 O-Rings 25 Mm, Thickness 3.5 Mm | 10 O-Rings 26.5 Mm, Thickness 3.5 Mm | 10 O-Rings 28Mm, Thickness 3.5Mm