This document describes a method for determining the specific gravity of tubing, fabricated from polytetrafluoroethylene, after a controlled heating and cooling cycle. The specific gravity obtained by this method is a measure of relative molecular weight of the resin. The measure, termed relative specific gravity (RSG), increases with decreasing molecular weight.
SAE ARP1153A-1970 history
2014SAE ARP1153A-2014 Method for Determining Relative Specific Gravity Polytetrafluoroethylene Tubing
1991SAE ARP1153A-1991 Method for Determining Relative Specific Gravity Polytetrafluoroethylene Tubing
1970SAE ARP1153A-1970 Method for Determining Relative Specific Gravity Polytetrafluoroethylene Tubing R(2001)
1970SAE ARP1153-1970 METHOD FOR DETERMINING RELATIVE SPECIFIC GRAVITY POLYTETRAFLUOROETHYLENE TUBING