Cross Section Shape Cross Section Shape |
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 | Round |
System of Measurement System of Measurement |
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Maximum Temperature Maximum Temperature |
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Material Material |
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For Use With For Use With |
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Color Color |
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 | Black |
Hardness Rating Hardness Rating |
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 | Medium |
Minimum Temperature Minimum Temperature |
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Hardness Hardness |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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O-Ring Grade O-Ring Grade |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About O-Rings
More
Ultra-Chemical-Resistant Kalrez 4079 O-Rings
for Tube Fittings with Straight-Thread Connection
Also known as Boss O-rings, these Kalrez 4079 O-rings are for use in tube fittings with a straight-thread connection. They’re inherently softer and more compressible than PTFE O-rings with comparable chemical resistance. Use them with acetone, methyl ethyl ketone (MEK), potassium hydroxide, and most acids. All have a round profile and are suitable for a wide range of static and dynamic sealing applications. These O-rings are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
| Dash Number | For Tube OD | Wd. | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Each | |
| 902 | 1/8" | 0.064" | 0.239" | 0.367" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 30° to 600° | Black | 00000000 | 000000 |
| 903 | 3/16" | 0.064" | 0.301" | 0.429" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 30° to 600° | Black | 00000000 | 00000 |
| 904 | 1/4" | 0.072" | 0.351" | 0.495" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 30° to 600° | Black | 00000000 | 00000 |
| 906 | 3/8" | 0.078" | 0.468" | 0.624" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 30° to 600° | Black | 00000000 | 00000 |
| 908 | 1/2" | 0.087" | 0.644" | 0.818" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 30° to 600° | Black | 00000000 | 00000 |
| 910 | 5/8" | 0.097" | 0.755" | 0.949" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 30° to 600° | Black | 00000000 | 00000 |