Swimming Pool Winterizing Plugs

Item No. MASTER-SKU53495
Item No. MASTER-SKU53495
Swimming Pool Winterizing Plugs
Swimming Pool Winterizing Plugs
Swimming Pool Winterizing Plugs Swimming Pool Winterizing Plugs
$3.99 - $7.99
We offer a variety of rubber and threaded plugs for winterizing your pool. Protect pipes from filling with water and freezing with these plugs. More Details

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We offer a variety of rubber and threaded plugs for winterizing your pool. Protect pipes from filling with water and freezing with these plugs.
  • Winter plug sets usually include plugs for return lines, skimmers and pool cleaner lines, if applicable
  • Rubber expansion plugs are for use in the pool, not on the pool's equipment or filtration system
  • For tapered rubber plugs, turn the plug around to adapt for use in different-sized pipes


All rubber pool plugs:
  • Are made with quality rubber, an oversized nylon wing nut, and 316 marine-grade stainless steel washers and through bolt
  • Are used to prevent pipes from filling with water and freezing during winter months
  • Can be used to plug pool returns, skimmers and cleaner lines
  • Should be replaced when they begin to show signs of wear and deterioration
  • Are available in various sizes for pipes ranging from 1/2 in. to 2-1/2 in. in diameter
  • Are also known as expansion plugs, freeze plugs, hole plugs, pool bugs or rubber plugs


The threaded skimmer plug:
  • Has a slotted handle design for easily screwing it on and off.
  • Can also be used on cleaner lines and threaded wall returns
  • Includes O-ring to create a tight, waterproof seal

All the Plugs You Need to Winterize Your Pool

We offer a broad assortment of plugs you can use to winterize your swimming pool. All plugs are made of high-quality material and are designed to tolerate extremely cold temperatures without slipping or shrinking.

When winterizing your pool, be sure to plug the pool lines after draining the water or blowing out the pipes to make sure no extra water is left in the lines that could freeze and potentially cause damage. For more information on each type of plug, see below.

  • #4 and #5 rubber plugs are compatible with 3/4-in wall returns, such as those found in gunite pools
  • #9 and #10 pool plugs can be used for 1-1/2-in. threaded return fittings or skimmers
  • The 1-1/2 in. threaded skimmer plug can also be used for 1-1/2 in. threaded skimmers and return fittings
  • #8 and #9 pool plugs can be used for non-threaded 1-1/2 in. pipes
  • #11 and #12 winter plugs are compatible with 2-in. pipes