When a filter, pump, or valve service job calls for the correct replacement detail, this O-ring gives technicians a dependable fit for the listed application. It is selected for systems where the part must helps restore a watertight seal where the tank body or fitting must resist pressure and seepage, making it especially valuable during rebuilds, seasonal maintenance, or component-level troubleshooting. The 195008 replacement should be matched carefully to the existing assembly and surrounding equipment. Helps support a cleaner repair with better fitment than a generic substitute Application-focused replacement for Sea Horse/FNS Tank Body O-420 O-Ring A practical choice for keeping compatible filter, pump, or valve systems in service Category: O-Rings Confirm the part number and model family before ordering to avoid fitment issues.