US Seal Shaft Seal [PS-3874 1" Viton] (PS-3874)

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The US Seal Shaft Seal [PS-3874 1" Viton] is a replacement pump shaft seal from US Seal Manufacturing designed to help prevent water from leaking along the pump shaft in compatible pool and spa pump assemblies. Shaft seals are critical service parts because they protect the motor side of the pump from water intrusion while allowing the impeller and shaft to rotate properly.This seal is intended for pump repair situations where the existing seal is worn, leaking, heat-damaged, or being replaced during a motor, impeller, or wet-end service. The Viton construction noted in the product name should be matched to the pump application, water environment, and original seal requirements before installation. Replacement shaft seal for compatible pool and spa pump assemblies Part number PS-3874 helps identify the correct seal during repair work Viton style/designation should be matched to the original seal requirements Helps protect pump motors from water migration through the shaft area Useful for leak repair, pump rebuilding, and preventative wet-end service Show more