These 4 mil gloves from Ace were okay:
<code>
GLOVEWORKS
INDUSTRIAL LATEX
BY AMMEX
TEXTRURED INDUSTRIAL LATEX GLOVES
NON-MEDICAL USE ONLY
LARGE
POWERED AMBIDEXTROUS
100 GLOVES

REORDER # TL 46100
</code>

These gloves from TrueValue were very weak and tore easily:
  Big Time Products 23590 Grease Monkey Latex Disposable Glove - Pack of 100
the thickness is not listed