FKL seals are completely contained within a cartridge. They can be preassembled and shelved for easy, one-piece replacement.

Additionally, no housing or pump modification is needed to change the Fristam FKL from a single seal to a double seal or from an O-ring seal to a mechanical seal.

Traditional rotor nuts can back-off when pumping viscous products. Once loose, they can severely damage pumps. The FKL is equipped with offset rotor bolts that lessen the unwinding force of the product.

As it rotates eccentrically, the bolt provides natural agitation to promote cleanability in the cavity.