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Industrial Thread 69 Nylon SEAL

Effect of Heat
  Sticks at 445° Fahrenheit.   Melts at 485° to 500° Fahrenheit.  Yellows slightly at 300° Fahrenheit when held for 5 hours. 
Effects of Bleaches and Solvents
 Can be bleached in most bleaching solutions. Generally insoluble in most organic solvents. Soluble in some phenolic compounds. 
Effects of Acids & Alkalis
 Unaffected by most mineral acids, except hot mineral acids. Dissolves with partial decomposition in concentrated solutions of hydrochloric, sulphuric, and nitric acids. Soluble in formic acids. Substantially inert in alkalis. 
Effects of Mildew, Aging, Sunlight & Abrasion
 Excellent resistance to mildew, aging and abrasion. Prolonged exposure to sunlight causes some deterioration. 
Dyes Used
  Disperse, acid and premetalized are usually preferred, but most other classes are allowed.