Foam Spacers | McMaster-Carr

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29 Products

Sealing Washers

Prevent leaks while distributing weight evenly under nuts and screws. These washers compress as you tighten to keep air and fluid in, and dust and contaminants out. Use them anywhere you need a tight seal, such as protecting electronics from moisture or keeping lubricants contained in machinery.

Plastic

Extreme heat and cold pose no problem for these resilient sealing washers. They won't deform or lose strength at temperatures as low as -400° F and as high as 525° F to handle everything from liquid nitrogen to heating elements. They are also the most chemical-resistant plastic washers we offer to withstand a wide range of acids, bases, solvents, and corrosive cleaners. ePTFE is more flexible than standard PTFE, so these washers compress easily to hold a strong seal. Reuse them a handful of times, as long as the material isn't damaged.

					Temp. Range, ° F
	For Screw Size	ID	OD	Thk.	Min.	Max.	Color	Food Industry Std.	Pkg. Qty.		Pkg.
Extreme-Temperature Ultra-Chemical-Resistant ePTFE



		No. 6	0.156"	0.438"	0.026" to 0.036"	-400	525	White	FDA Compliant 21 CFR 177.1550	25	96371A111	000000
		No. 8	0.188"	0.500"	0.026" to 0.036"	-400	525	White	FDA Compliant 21 CFR 177.1550	25	96371A112	00000
		No. 10	0.203"	0.563"	0.026" to 0.036"	-400	525	White	FDA Compliant 21 CFR 177.1550	25	96371A113	00000
		1/4"	0.250"	0.500"	0.035" to 0.070"	-200	400	White	—	5	96371A201	0000
		5/16"	0.312"	0.625"	0.035" to 0.070"	-200	400	White	—	5	96371A203	00000
		3/8"	0.375"	0.750"	0.035" to 0.070"	-200	400	White	—	5	96371A206	00000
		1/2"	0.500"	0.875"	0.035" to 0.070"	-200	400	White	—	5	96371A207	00000
		1/2"	0.500"	1"	0.035" to 0.070"	-200	400	White	—	1	96371A208	0000
		5/8"	0.625"	1.000"	0.035" to 0.070"	-200	400	White	—	1	96371A209	0000
		3/4"	0.750"	1.500"	0.035" to 0.070"	-200	400	White	—	1	96371A211	0000


		1"	1.000"	1.500"	0.035" to 0.070"	-200	400	White	—	1	96371A213	0000

Surface Guards for Corners


Style 2	Screw In

These surface guards are at a 90° angle to protect corners on equipment, walls, and docks from damage caused by carts, vehicles, and other moving objects. All have a hard rating to withstand high levels of impact. They are nonmarring and can be used outdoors.

UV Resistant—UV-resistant surface guards won’t dry out and become brittle when exposed to UV rays.

Screw In—Screw-in surface guards mount with fasteners.

Polyurethane Foam—Polyurethane foam surface guards are designed to cushion during impact. They have good abrasion resistance. They can be used outdoors.

										Temp., ° F		Mounting
	Style	Lg.	Ht.	Thk.	Counterbore Dia.	Nonmarking	For Use Outdoors	Hardness Rating	Hardness	Min.	Max.	No. of Holes	Hole Dia.	Ctr.-to-Ctr.	Color	Performance		Each
Screw In





				Polyurethane Foam

				2	7"	7"	7"	1 1/8"	Yes	Yes	Hard	Durometer 70A	-10	140	4	3/8"	3"	Black	UV Resistant	46875K114	0000000
				2	12"	4 1/4"	2 1/4"	1"	Yes	Yes	Hard	Durometer 70A	-10	140	4	3/8"	7 1/4"	Black	UV Resistant	46875K111	000000

Adhesive-Back Bumpers


Style 1	Style 7

Stick these bumpers onto glass and other surfaces that are too thin or fragile for fasteners. The adhesive back forms a tight grip without scratching or discoloring your surface. They're comparable to Bumpon bumpers.

Style 1

Polyethylene Foam—Use these soft and moisture-resistant bumpers to cushion impact in damp environments, though not outdoors. For a soft bumper that stands up to sunlight and rain, look to silicone foam.

Hardness Rating—The harder the bumper, the better it withstands impact and abrasion over time. The softer the bumper, the more cushioning it provides for objects made of glass, soft metal, and other fragile materials. Bumpers with a medium rating offer a balance of impact resistance and cushioning.

	Ht.	Hardness	Hardness Rating	Temp., ° F	Nonmarking	For Use Outdoors	Color	Pkg. Qty.		Pkg.
Polyethylene Foam



	1/2"	1/16"	Not Rated	Soft	0 to 140	Yes	No	Black	100	8213K1	000000
	1/2"	1/8"	Not Rated	Soft	0 to 140	Yes	No	Black	100	8213K4	0000
	3/4"	1/16"	Not Rated	Soft	0 to 140	Yes	No	Black	100	8213K2	0000
	3/4"	1/8"	Not Rated	Soft	0 to 140	Yes	No	Black	100	8213K5	0000
	1"	1/16"	Not Rated	Soft	0 to 140	Yes	No	Black	100	8213K3	00000
	1"	1/8"	Not Rated	Soft	0 to 140	Yes	No	Black	100	8213K6	00000

Style 7

High-Temperature Silicone Foam—The best choice for outdoor use, with a wider temperature range than our other bumpers. They stay soft and flexible in sunlight and temperatures down to -20° F.

	Wd.	Ht.	Hardness	Hardness Rating	Temp., ° F	Nonmarking	For Use Outdoors	Color	Pkg. Qty.		Pkg.
Polyethylene Foam



	1/2"	1/2"	1/16"	Not Rated	Soft	0 to 140	Yes	No	Black	80	8213K7	00000
	1/2"	1/2"	1/8"	Not Rated	Soft	0 to 140	Yes	No	Black	80	8213K11	0000
	3/4"	3/4"	1/16"	Not Rated	Soft	0 to 140	Yes	No	Black	100	8213K8	00000
	3/4"	3/4"	1/8"	Not Rated	Soft	0 to 140	Yes	No	Black	100	8213K12	00000
	1"	1"	1/16"	Not Rated	Soft	0 to 140	Yes	No	Black	96	8213K9	00000
	1"	1"	1/8"	Not Rated	Soft	0 to 140	Yes	No	Black	96	8213K13	0000


	High-Temperature Silicone Foam



			1/2"	1/2"	1/8"	Not Rated	Soft	-20 to 300	Yes	Yes	Red	20	3592K6	00000
			1/2"	1/2"	3/16"	Not Rated	Soft	-20 to 300	Yes	Yes	Red	20	3592K8	00000
			1/2"	1/2"	1/4"	Not Rated	Soft	-20 to 300	Yes	Yes	Red	10	3592K1	0000
			1"	1"	1/4"	Not Rated	Soft	-20 to 300	Yes	Yes	Red	10	3592K2	00000