Rubber Bellow Seal
Low cost Seal. It is Probably largest, mass, product seals in the world, No sliding elastomer or o-ring. Nothing to hang-up on the shaft Easy to install. These seldom any measurement to make or set screw to tighten to the shaft. Most design are position against a shaft shoulder or attached to a shoulder cast into the back of the impeller.

Push it on the shoulder, and that availability you can purchase. these seals from a Singh FLO-TEK and variety of manufactures and bearing house most distributers have replacement charts that will reference your present seal and recommend an equivalent design No shaft or sleeve fretting, when installed properly the seal cannot fratt or damage a shaft or sleeve because there is no relative movement between the rubber boot and shaft or sleeve.

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