Document 7OBpNQ4yYOKpjZEMr2BGwBgxa

AAMOA H*VT mnnt, rv Mot *www 648 PLAINTIFFS EXHIBIT yyy*5m PLAINTIFFS^ j I EXWBITsgvl? NAVY DEPARTMENT BUREAU OF SHIPS WASHINSTOW. O. C tEH/sil BEBORANIHBf Froms Tos 648. 336. " Subjs Compound, Vapor Seal, Fire Retardant, for Refrigeration Piping Insulation - Additional Sources of Supply. Kefs (a) SUPSHIF C&taden Itr. to N,T.S.Co?p.S39/A6-l; Serial 11756 of 30 Sept. 1943 (copies to BUSKIPS). X. The information dereference (a) was obtained by the Piping Section from Chemical. 2. It is understood that others like Pecora, Ben Poster and Intercoastal have been interested in developing a v&por barrier compound equal to fa* better than the Armstrong ifFR521 ?7hich so far is the only product approved for the subject purpose. 3. It is requested that other sources of supply of such vapor barrier be encouraged and developed. 4. This Section desires to- be kept informed regularly as to progress made. CCs 646 sv* a-a i* WV-05683