Zoro Select ZUSADC75013 O-Ring 7/16 in 1/16 in FFKM Black

What this O-Ring is and who it fits

The Zoro Select ZUSADC75013 is a black FFKM O-Ring with a nominal inside diameter of 7/16 in and a nominal width of 1/16 in. It suits maintenance crews and engineers who need a perfluoroelastomer seal rated for a temperature range of 30 Degrees to 600 Degrees F and a durometer of 75A. The dash number is 013 and the actual inside diameter measures .4 in with an actual width of .07 in. It is not metal detectable and not X-ray detectable.

What to verify on your equipment before ordering

Confirm that the gland dimensions match the actual inside diameter of .4 in and the actual outside diameter of .566 in. Check that the operating temperature stays within 30 to 600 Degrees F and that the medium-hard 75A durometer suits the pressure and extrusion gap in your assembly. Ensure the application does not require FDA compliance, as this part is not FDA compliant. The cross-section shape is round and the system of measurement is inch.

Behaviour under sustained thermal and chemical load

FFKM material maintains sealing force across the full 30 to 600 Degrees F range without the rapid compression-set typical of lesser elastomers. The medium-hard 75A rating resists extrusion during prolonged high-pressure cycles better than softer grades. Because the compound is not metal detectable or X-ray detectable, it will not trigger contamination sensors in pipelines that rely on those inspection methods. Performance remains consistent in aggressive chemical environments where standard FKM would degrade.