Product Application
Conductive silicone washers are manufactured to provide a snug fit around a shaft or rod to eliminate the possibility of it acting as an antenna to radiate or pick up unwanted electromagnetic noise. The conductive silicone washers can be supplied in silicone, fluorosilicone, or EPDM effective in hostile environments incorporating fuels or decontamination chemicals.
EMI/RFI Conductive silicone Washer Sizes
Figure #5
| CONDUCTIVE SILICONE FLAT WASHERS | ||||
| I.D. +/- .015 |
O.D. +/- .015 |
THICK T |
MIL SPEC M83528/012X-( ) |
MAJR PART NUMBER |
| .250 | .625 | .032 | (001) | 2603-025063-XX |
| .062 | (002) | 2606-025063-XX | ||
| .375 | .750 | .032 | (003) | 2603-038075-XX |
| .062 | (004) | 2606-038075-XX | ||
| .500 | .656 | .032 | (005) | 2603-050066-XX |
| .062 | (006) | 2606-050066-XX | ||
| .500 | .875 | .032 | (007) | 2603-050088-XX |
| .062 | (008) | 2606-050088-XX | ||
| .750 | 1.000 | .032 | (009) | 2603-075010-XX |
| .062 | (010) | 2606-075010-XX | ||
| 1.000 | 1.438 | .032 | (011) | 2603-100144-XX |
| .062 | (012) | 2606-100144-XX | ||
Note: Replace -XX with the appropriate Material Designation Number found below in Table #1 below.
Note: Other sizes available on request.
Table 1
Material Chart:
| Conductive Elastomer Material Chart | |||||||||
| Material Designation Number | 52 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | |
| Elastomer | — | Silicone | Silicone | Silicone | Silicone | Fluorosilicone | Silicone | Silicone | Silicone |
| MIL-DTL-83528 Type | — | — | M | A | B | D | L | E | — |
| Conductive filler | — | Ni/Gr | Ag/Glass | Ag/Cu | Ag/Al | Ag/Al | Ag/Ni | Ag | Carbon |
| Volume resistivity | Ohm-cm | 0.100 | 0.006 | 0.005 | 0.008 | 0.012 | 0.005 | 0.002 | 7.000 |
| Hardness | Shore A | 30-70 | 65 | 85 | 65 | 70 | 75 | 65 | 70 |
| Operating Temp. | Deg. C. Min. | -55 | -55 | -45 | -55 | -55 | -55 | -55 | -55 |
| Deg. C. Max. | 150 | 160 | 125 | 160 | 160 | 125 | 160 | 200 | |
| Material Designation Number | 68 | 69 | 71 | 74 | 75 | 76 | 78 | 79 | |
| Elastomer | — | Silicone | Fluorosilicone | Silicone | Fluorosilicone | Fluorosilicone | Silicone | Silicone | Silicone |
| MIL-DTL-83528 Type | — | K | F | — | C | — | I | H | G |
| Conductive filler | — | Ag/Cu | Ag | Ni/Al | Ag/Cu | Ni/Gr | Ag | Ag | Ag/Cu |
| Volume resistivity | Ohm-cm | 0.004 | 0.002 | 0.08 | 0.010 | 0.100 | 0.010 | 0.005 | 0.007 |
| Hardness | Shore A | 85 | 75 | 65 | 75 | 65 | 45 | 80 | 80 |
| Operating Temp. | Deg. C. Min. | -55 | -65 | -60 | -55 | -55 | -55 | -55 | -45 |
| Deg. C. Max. | 125 | 160 | 200 | 125 | 150 | 160 | 160 | 125 | |
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