1.1 This specification covers flexible cellular urethane materials intended for such uses as inserts for furniture cushions, mattresses, and similar applications.
1.2 This specification provides material and dimensional requirements and methods of tests for specific properties of load bearing, compression set, humid age resistance, pounding fatigue resistance, support factor and resilience.
1.3 This specification includes references to government regulations for burning characteristics of flexible cellular material used in specified applications.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.