1、IMIL-R-25988/4(usAF)23 November 1971MILITARY SPECIFICATION SHEETRLIBBER, FLUOROSILICONE ELASTOMER, OIL- AND FUEL-RESISTANT,O-RINGS, CLASS 1, GRADE 80The complete requirements for procuring the o-ring describedherein shall consist of this document and the issue in effectof specification MIL-R-25988(u
2、sAF)Purpose. The purpose of this specification sheet is to set up astandardized part numbering system for o-rings procured toMIL-R-25988, Class 1, Grade 80.Part Numbers. Nhen this document is used for procurementpart numbers shall consist of the following:1.2.listingof 0-rings ,Theletter M and the s
3、pecification sheet number.A dash followed bythe appropriate dash number from theof o-rin8 sizes (see MIL-R-25988/l(usAF).Example 1M25988f4-220See MIL-R-25988/l(usAF) for o-ring drawingCustodian:Air Force - 11Review activity:Air Force - 82Example 2M25988/4-335and dimensions.Preparing activity:Air Force - 11Project Number: 5330-F022/FSC 5330Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
