EOEC Standard Deviations       Effective 4-6-2005               10:08 Tuesday, April 5, 2005

                                       Within                    Total
                                          Lab    Overall      Individual
Elastomer               Parameter         STD      STD      Determinations

FLUOROELASTOMER         Volume           0.13       0.15          731
FLUOROELASTOMER         Hardness         1.80       2.39          694
FLUOROELASTOMER         Tension          5.23       5.58          732
FLUOROELASTOMER         Elongation       8.41      10.43          723

NITRILE                 Volume           0.86       0.87          743
NITRILE                 Hardness         1.37       1.71          707
NITRILE                 Tension          7.40       7.60          734
NITRILE                 Elongation       7.53       7.54          734

POLYACRYLATE            Volume           0.80       0.82          750
POLYACRYLATE            Hardness         1.87       1.90          728
POLYACRYLATE            Tension         10.18      10.17          746
POLYACRYLATE            Elongation      11.73      11.73          745

SILICONE                Volume           2.30       2.32          733
SILICONE                Hardness         1.55       2.59          690
SILICONE                Tension          5.49       5.51          722
SILICONE                Elongation       9.88       9.90          734

VAMAC                   Volume           1.37       1.71          81
VAMAC                   Hardness         1.04       1.05          82
VAMAC                   Tension         10.54      15.24          77
VAMAC                   Elongation      13.44      14.15          78