Welch Plugs | McMaster-Carr

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40 Products

Freeze Plugs

Permanently seal the shallow holes left in a component during the casting process.

Steel—The strongest plugs, but moisture can cause them to rust.

18-8 Stainless Steel—Our most corrosion-resistant plugs for parts exposed to moisture and the outdoors.

	Ht.	Dia.	Max. Temp.	Pkg. Qty.		Pkg.
Steel



	1/8"	0.036"	0.127"	Not Rated	10	00000000	000000


	1/4"	0.069"	0.252"	Not Rated	10	00000000	00000
	3/8"	0.106"	0.377"	Not Rated	10	00000000	00000
	1/2"	0.123"	0.502"	Not Rated	10	00000000	00000
	5/8"	0.098"	0.628"	Not Rated	10	00000000	00000
	3/4"	0.138"	0.753"	Not Rated	10	00000000	00000
	7/8"	0.174"	0.878"	Not Rated	10	00000000	00000
	1"	0.2"	1.003"	Not Rated	10	00000000	00000
	1 1/8"	0.203"	1.128"	Not Rated	5	00000000	00000
	1 1/4"	0.208"	1.253"	Not Rated	5	00000000	00000
	1 3/8"	0.218"	1.38"	Not Rated	5	00000000	00000


	1 1/2"	0.177"	1.505"	Not Rated	5	00000000	00000
	1 5/8"	0.226"	1.63"	Not Rated	5	00000000	00000
	1 3/4"	0.229"	1.755"	Not Rated	5	00000000	00000
	1 7/8"	0.24"	1.88"	Not Rated	5	00000000	00000
	2"	0.244"	2.005"	Not Rated	5	00000000	00000
	2 1/4"	0.265"	2.255"	Not Rated	3	00000000	00000
	2 1/2"	0.275"	2.505"	Not Rated	3	00000000	00000
	2 3/4"	0.298"	2.755"	Not Rated	3	00000000	0000
	3"	0.313"	3.005"	Not Rated	3	00000000	0000


	18-8 Stainless Steel



			1/8"	0.015"	0.127"	Not Rated	10	00000000	00000


			1/4"	0.069"	0.252"	Not Rated	10	00000000	00000
			3/8"	0.106"	0.377"	Not Rated	10	00000000	00000
			1/2"	0.075"	0.502"	Not Rated	10	00000000	00000
			5/8"	0.098"	0.628"	Not Rated	10	00000000	00000
			3/4"	0.138"	0.753"	Not Rated	10	00000000	00000
			7/8"	0.171"	0.878"	Not Rated	7	00000000	00000
			1"	0.19"	1.003"	Not Rated	7	00000000	00000
			1 1/8"	0.2"	1.128"	Not Rated	1	00000000	0000
			1 1/4"	0.205"	1.253"	Not Rated	5	00000000	00000
			1 3/8"	0.215"	1.38"	Not Rated	5	00000000	00000


			1 1/2"	0.217"	1.505"	Not Rated	5	00000000	00000
			1 5/8"	0.232"	1.63"	Not Rated	1	00000000	0000
			1 3/4"	0.226"	1.755"	Not Rated	3	00000000	00000
			1 7/8"	0.237"	1.88"	Not Rated	3	00000000	00000
			2"	0.241"	2.005"	Not Rated	3	00000000	00000
			2 1/4"	0.262"	2.255"	Not Rated	3	00000000	00000
			2 1/2"	0.272"	2.505"	Not Rated	3	00000000	00000
			2 3/4"	0.295"	2.755"	Not Rated	1	00000000	0000
			3"	0.31"	3.005"	Not Rated	2	00000000	00000