Gray Backer Rods | McMaster-Carr

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16 Products

Backer Rods

Image of Attribute. Front orientation. Contains Annotated, Border.

Provide support for sealants in gaps—insert these backer rods into gaps and fill in with sealant.

Closed-Cell Foam—Closed-cell backer rods restrict moisture from being absorbed. Use them with joints that have wide, even spaces.

Open/Closed-Cell Foam—Open/closed backer rods are more compressible than closed-cell ones. They also restrict moisture from being absorbed. Use them with uneven joints where self-leveling is needed.

	Dia.	Lg., yd.	Min. Temp., ° F	Max. Temp., ° F	Color		Each
Closed-Cell Polyethylene Foam



	1/4"	3/8"	33	-45	160	Gray	000000000	000000


	1/4"	3/8"	600	-45	160	Gray	000000000	000000
	1/2"	5/8"	33	-45	160	Gray	000000000	00000
	1/2"	5/8"	515	-45	160	Gray	000000000	000000
	11/16"	7/8"	33	-45	160	Gray	000000000	00000
	11/16"	7/8"	280	-45	160	Gray	000000000	000000


	Open/Closed-Cell Polyethylene Foam



			1/4"	3/8"	33	-45	160	Gray	000000000	00000


			1/2"	5/8"	33	-45	160	Gray	000000000	00000
			11/16"	7/8"	33	-45	160	Gray	000000000	00000
			7/8"	1 1/8"	16	-45	160	Gray	000000000	00000
			7/8"	1 1/8"	167	-45	160	Gray	000000000	000000
			1 1/8"	1 1/2"	140	-45	160	Gray	000000000	000000
			1 1/2"	2"	84	-45	160	Gray	000000000	000000
			1 7/8"	2 1/2"	54	-45	160	Gray	000000000	000000
			2 1/4"	3"	34	-45	160	Gray	000000000	000000
			3"	4"	18	-45	160	Gray	000000000	000000