Sometimes, but FFKM is not a repair for every failed EPDM seal. If the product contains oils, hydrocarbons or solvents that attack the EPDM grade, a suitable FFKM compound may be worth considering. If the real cause is dry running, poor installation, shaft movement or a blocked support system, a costly new elastomer will not fix it.
Before changing material, establish what the seal touches in production and during cleaning. Check the highest temperature, steam duty, cycle count and the grade specific data. Some FFKM grades are selected for aggressive chemicals but are not the right grade for hot water or steam. Check dimensions and fit too: a material change is not permission to ignore groove design, squeeze and compatibility of the other seal parts.
I would ask why EPDM failed, then compare the actual compounds against the whole duty. On clean steam with suitable cleaning chemistry, a correctly selected peroxide cured EPDM may still be the better and lower cost answer. The material name alone is never the specification.
Andrew Sykes | Acumen Seals & Pumps Limited | Independent mechanical seals and sealing specialist