MIL-R-25988/2, MILITARY SPECIFICATION: SPECIFICATION RUBBER, FLUOROSILICONE ELASTOMER, OIL- AND FUEL-RESISTANT, O-RINGS, CLASS 3 (27-JAN-1971)

MIL-R-25988/2, MILITARY SPECIFICATION: SPECIFICATION RUBBER, FLUOROSILICONE ELASTOMER, OIL- AND FUEL-RESISTANT, O-RINGS, CLASS 3 (27-JAN-1971)., The purpose of this specification sheet is to set up a standardized part numbering system for o-rings procured to MIL-R-25988, Class 3.