SAE Metric 826-Piece Rubber O-Ring Set for Plumbing, Auto Repair, and Faucet O-rings are used to keep liquid or air in or out of a defined space. Features: Rubber O-ring used in oil or plumbing replacement. Sealing gaskets are used in pipes, machinery, engines, hydraulic, sanitary, and pneumatic machinery from -21°C to +121°C. Rubber O-rings provide excellent resistance to acid, gasoline, oil, UV, and heat, as well as a long service life. The set is suitable for any home and craftsman, a must-have in any garage. You will find the size guide in the product description. QUALITY GUARANTEE – Add to your cart. Product Details: Item Type: Nitrile Rubber O-Ring. O-Ring Color: Black. Storage Case: PVC, Red Color. Box Dimensions (L x W x H): 25 x 16 x 4 cm. Contents: 419-piece metric nitrile rubber O-ring assortment. 1 PVC box. Scope of Delivery: 20 pieces R-01 Ø3 x 1.5 mm. 20 pieces R-02 Ø 4.4 x 2 mm. 18 pieces R-03 Ø5 x 2 mm. 23 pieces R-04 Ø7 x 1.5 mm. 23 pieces R-05 Ø10 x 1.5 mm. 23 pieces