Metal Detectable O-Rings Selection Guide
Metal Detectable O-Ring Material Compatibility to Detect Contamination in Food and Pharmaceutical Processing systems from Experts
Marco Rubber Supplies Metal Detectable O-Rings, Seals, Sanitary Gaskets, X-rings, and any custom shape desired.
Metal detectable O-Rings and Rubber Seals are used with detection equipment to identify contamination. Over time and repeated clean in place, sterilization, and processing equipment components in food, beverage, and pharmaceutical processing equipment can degrade. As elastomer seals degrade, there is a high risk of rubber fragment contamination. Metal detectable O-rings and Seals are designed to work with Inline X-ray detection, Metal detection and Magnetic separator equipment for immediate contamination alert. Different base materials like FKM, Silicone, EPDM and Buna-N are filled with a unique combination of magnetic metallic fillers so easily detectable allowing systems to quickly reject contaminated product and trigger equipment PM to drastically reduce the potential of contamination of the final product. We have found the metal detectable O-Ring and Seal market is NOT one material fits all detection equipment and requirements. If the more popular materials do not work, Marco Rubber is equipped to offer fast prototype runs of custom formulated materials to confirm performance.
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Metal Detectable O-Ring Material Compatibility to Detect Contamination in Food and Pharmaceutical Processing systems from Experts
Contact us for help selecting from these and the many more available.
| CPD# | MATERIAL | DUROMETER (SHORE A) | COLOR | LOW TEMP (F) | HIGH TEMP (F) | FDA* | USP CLASS VI** | NSF61 | USDA 3A | METAL DETECTABLE |
|---|---|---|---|---|---|---|---|---|---|---|
| EPDM | 70 | Black | -65 | 300 |  | | ||||
| Peroxide cured EPDM, Different Durometer , KTW, WRAS standards available | ||||||||||
| EPDM | 70 | White | -65 | 300 | | | | |||
| Wide range of compliance | ||||||||||
| EPDM | 70 | Black | -40 | 250 | | | | |||
| Wide range of compliance | ||||||||||
| EPDM | 70 | Black | -65 | 300 | | | | |||
| Formulated for Chloramine Resistance. Can be manufactured in custom shapes with minimal setup charge. | ||||||||||
| NBR | 70 | Black | -30 | 250 | | |||||
| Available in many durometers and colors | ||||||||||
| NBR | 70 | White | -30 | 250 | | |||||
| Available in many durometers and colors | ||||||||||
| NBR | 70 | Black | -30 | 250 | | | ||||
| KTW, WRAS and other standards available. | ||||||||||
| NBR | 70 | Black | -30 | 250 | | | ||||
| Metal detectable for contamination detection sensors(additional colors available) | ||||||||||
| VMQ | 70 | Orange | -75 | 400 | | |||||
| Available in many durometers and colors | ||||||||||
| VMQ | 70 | Clear Translucent | -75 | 400 | | |||||
| Clear Translucent, available in many durometer and color choices. | ||||||||||
| VMQ | 70 | Clear Translucent | -75 | 400 | | | ||||
| Clean room manufactured, platinum cured (specific base materials and cleanroom packaging options available) | ||||||||||
| VMQ | 70 | Clear Translucent | -65 | 400 | | | ||||
| Commercial manufactured, platinum cured (cleanroom manufacturing and packaging options available) | ||||||||||
| VMQ | 70 | White | -75 | 480 | | | ||||
| Cleanroom manufactured, Lower cost than clear | ||||||||||
| FKM | 75 | White | -15 | 437 | | | ||||
| Cleanroom manufacturing and packaging options available | ||||||||||
| FKM | 70 | White | -15 | 437 | | | | |||
| Steam Resistant Terpolymer, Also available in black | ||||||||||
| FKM | 70 | Black | -15 | 392 | | | ||||
| Metal detectable for contamination detection(additional colors available) | ||||||||||
| FFKM | 75 | Black | -5 | 525 | | | ||||
| Low cost performance value, nearly universal chemical compatibility, acid, amines, solvents, compression set resistance, FDA compliant and USP Class VI medical grade. Compare to Kalrez® 6230, Kalrez® LS222 | ||||||||||
| FFKM | 75 | Black | 5 | 635 | | |||||
| Highest temperature FFKM with best long term compression set resistance up to 335ºC, short exposures up to 350ºC, Low sticking force, semicon metallic clean, low outgassing, wide range of chemical acid, solvent resistance, FDA complaint. Compare to Kalrez® 7075, Kalrez® 4079, Kalrez® 8900 | ||||||||||
| FFKM | 75 | White | 5 | 500 | | | ||||
| USP Class VI and FDA compliant white FFKM with wide range compatibility. Compare to Kalrez® 6221, Kalrez® LS205, Chemraz® 625 | ||||||||||
*FDA compliance per 21 CFR 177.2600 parts A-D, E&F approved compounds available upon request. **USP <87> and USP <88> approved compounds available upon request.
The temperature ranges presented above are approximations for dry air service only and should not be used to determine design specifications or end-use temperature limits. Actual temperature range of a compound in an end-use application is highly dependent on part type, hardware configuration, applied forces, chemical media, pressure and thermal cycling effects, and other factors. The most practical way of determining an end-use temperature range is testing in the actual application conditions. Consult a Marco Engineer for more details.
