UL-157 › Complete Document History
Standard for Gaskets and Seals

Complete Current Edition:
   2ND EDITION - GASKETS & SEALS - March 8, 1996
   CHANGE 05/97 - REVISION CHANGE - CODE A - May 9, 1997
   CHANGE 05/98 - REVISION CHANGE - CODE A - May 29, 1998
   CHANGE 06/99 - REVISION CHANGE - CODE A - June 30, 1999
   CHANGE 03/07 - REVISION CHANGE - CODE A - March 12, 2007
   CHANGE 03/15 - REVISION CHANGE - CODE A - March 2, 2015

Obsolete Revision Information:
   1991 EDITION - GASKETS & SEALS - Jan. 1, 1991
   1990 EDITION - GASKETS & SEALS - Jan. 1, 1990