EOEC Standard Deviations       Effective 7-1-2005               13:41 Thursday, June 30, 2005

                                       Within                    Total
                                          Lab    Overall      Individual
Elastomer               Parameter         STD      STD      Determinations

FLUOROELASTOMER         Volume           0.18       0.20          779
FLUOROELASTOMER         Hardness         1.78       2.39          739
FLUOROELASTOMER         Tension          5.15       5.51          780
FLUOROELASTOMER         Elongation       8.57      10.46          768

NITRILE                 Volume           0.87       0.89          808
NITRILE                 Hardness         1.40       1.76          770
NITRILE                 Tension          7.57       7.85          797
NITRILE                 Elongation       7.58       7.64          798

POLYACRYLATE            Volume           0.80       0.82          798
POLYACRYLATE            Hardness         1.86       1.91          770
POLYACRYLATE            Tension          9.99      10.02          793
POLYACRYLATE            Elongation      11.61      11.71          791

SILICONE                Volume           2.24       2.29          785
SILICONE                Hardness         1.52       2.55          738
SILICONE                Tension          6.12       6.11          775
SILICONE                Elongation       9.83       9.83          785

VAMAC                   Volume           1.76       2.24          116
VAMAC                   Hardness         1.01       1.01          115
VAMAC                   Tension         10.20      13.19          113
VAMAC                   Elongation      12.22      13.15          113