AS-568-美国O型圈标准.pdf

AS568 O-Ring Size Reference O-Ring Reference: AS568 Sizes FOR SEMICONDUCTOR APPLICATIONS A S 5 6 8 D i m e n s i o n s ID SAE AS568 is published by the aerospace portion of the Society of Automotive Engineers. Its actual title is Aerospace Size Standard for O-Rings, although its use is much more widespread than just the aerospace industry. SAE AS568 is the most commonly used CS standard in the US for aerospace, automotive and general industrial applications. OD The sizes in the standard are defined by maximum and minimum ID and CS dimensions (although most listings, including this one, show this as a midpoint and a ± tolerance). Each ID and CS combination is identified by a three-digit “dash number” as shown below. Cross-section Size AS568 Part Numbers: A S 5 6 8 - 2 1 4 C D 4 8 6 Code Millimeters Inches SAE Standard -0XX 1.78* 0.070* Dash Size Cleaning and Packaging Designator (see table below) -1XX 2.62 0.103 Compound Number (see table) -2XX 3.53 0.139 -3XX 5.33 0.210 -4XX