Treatments Available on request for leather in stock: 652-Part 8. Acoustic. ASTM E84. BFD-IX-1. FAR /JAR 25853 APP. F PAR (A) (1) (II). H2O1. Treatments available on request for full custom leather applications:653-Part 2 and Part 5. BS 5852. FAR /JAR 25853 APP. F PAR (A) (1) (I). H2O2 - H2O3. NFP 92503 : 1995. NFP 92507 : 2004. Ultimate