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 Back-Up Ring, Series: 8 Series, 3.881 in Inside Dia, 4-1/8 in Outside Dia, 0.05 in Thickness, Cross Section: 0.118 in, Contoured Cross Section, Dash Number: 241, 90 Shore A Durometer, Hard Hardness, -40 to 250 deg F, Buna-N, Black, Import
| Color | : | Black |
| Cross Section Shape | : | Contoured |
| Cross Section | : | 0.118 in |
| Dash Number | : | 241 |
| Domestic/Import | : | Import |
| Durometer | : | 90 Shore A |
| Hardness | : | Hard |
| Inside Diameter | : | 3.881 in |
| Material | : | Buna-N |
| Outside Diameter | : | 4-1/8 in |
| Series | : | 8 Series |
| Temperature Rating | : | -40 to 250 deg F |
| Thickness | : | 0.05 in |
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