The most widely used O-Ring elastomer. Excellent resistance to petroleum products. Excellent compression set, tear and abrasion resistance. Does not have good resistance to ozone, sunlight, or weather, unless specifically compounded. Should not be stored in direct sunlight or near motors or other electrical equipment which may generate ozone.
APG, HB90238, Back-Up Ring, Series: 8 Series, 3.506 in ID, 3.742 in OD, 0.05 in Thickness, 0.118 in Cross Section, Contoured Cross Section, 238 Dash Number, 90 Durometer, Hard Hardness, -40 to 250 deg F, Nitrile, Black, Import
| Color | : | Black |
| Cross Section Shape | : | Contoured |
| Cross Section | : | 0.118 in |
| Dash Number | : | 238 |
| Domestic/Import | : | Import |
| Durometer | : | 90 |
| Hardness | : | Hard |
| Inside Diameter | : | 3.506 in |
| Material | : | Nitrile |
| Outside Diameter | : | 3.742 in |
| Series | : | 8 Series |
| Temperature Rating | : | -40 to 250 deg F |
| Thickness | : | 0.05 in |
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