Technical Products Winter Plug [#14 3.4" OD 3"] (#14) onoffvalves A gasket like this is

A gasket like this is useful because it helps maintain the intended seal between related parts and is often important in repairs where generic substitutes are not a good fit

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Supports cleaner and more dependable skimmer reassembly

Supports dependable isolation of larger plumbing lines

A multi-layer filter bag is useful because it can offer more refined filtration behavior than simpler single-layer options

Technical Products Winter Plug [#14 3.4" OD 3"] (#14) onoffvalves A gasket like this isThe Technical Products winter plug is designed for compatible winterization applications where a temporary seal is needed for 3 inch plumbing openings. A winter plug is useful because it helps close the line during seasonal shutdown, supporting cleaner service work and more dependable off season system preparation. This replacement is especially useful when the original plug is worn, damaged, leaking, or missing. Matching the correct #14 size with 3.