Crush Washers | McMaster-Carr

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223 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.

Metal

Also known as crush washers, these are made of soft metal that deforms under pressure to fill gaps around the nut or screw. Often found in oil drain valves, they withstand stress and wear better than plastic and rubber washers, but aren't as leak-resistant. Metal sealing washers are not reusable.

Copper—Softer than aluminum washers, these deform easily to create a tight seal with less effort. They resist rusting in corrosive environments, but will develop a green patina over time.

Cellulose-Filled Copper—The easiest washers to crush. These washers are embedded with cellulose, which makes them more flexible than other metal washers for a tighter seal. They resist rusting in corrosive environments, but will develop a green patina over time.

Aluminum—These washers are an economical alternative to copper. They have similar corrosion resistance but require more effort to crush.

	For Screw Size	ID	OD	Thk.	Specs. Met	Pkg. Qty.		Pkg.
Copper



		No. 2	0.094"	0.218"	0.018" to 0.025"	—	25	000000000	000000


		No. 4	0.125"	0.281"	0.024" to 0.038"	—	25	000000000	00000
		No. 5	0.141"	0.281"	0.024" to 0.038"	—	25	000000000	00000
		No. 6	0.156"	0.281"	0.024" to 0.038"	—	25	000000000	00000
		No. 8	0.174"	0.312"	0.024" to 0.038"	—	25	000000000	00000
		No. 10	0.203"	0.375"	0.024" to 0.038"	—	25	000000000	00000
		No. 12	0.234"	0.390"	0.033" to 0.047"	—	25	000000000	00000
		1/4"	0.260"	0.500"	0.043" to 0.057"	—	10	000000000	00000
		5/16"	0.344"	0.625"	0.043" to 0.057"	—	10	000000000	00000
		3/8"	0.406"	0.656"	0.055" to 0.069"	—	10	000000000	00000
		7/16"	0.500"	0.750"	0.055" to 0.069"	—	10	000000000	00000


		1/2"	0.531"	0.812"	0.055" to 0.069"	—	10	000000000	00000
		5/8"	0.688"	0.938"	0.071" to 0.086"	—	5	000000000	00000
		3/4"	0.812"	1.062"	0.071" to 0.086"	—	5	000000000	00000
		7/8"	0.938"	1.187"	0.086" to 0.104"	—	1	000000000	0000
		1"	1.062"	1.375"	0.086" to 0.104"	—	1	000000000	00000
		1 1/4"	1.312"	1.625"	0.112" to 0.13"	—	1	000000000	00000
		M2	2.200 mm	5.600 mm	0.6 mm to 0.9 mm	—	25	000000000	00000
		M2.5	2.700 mm	6.000 mm	0.6 mm to 0.9 mm	—	25	000000000	00000
		M3	3.200 mm	6.400 mm	0.6 mm to 0.9 mm	—	25	000000000	00000
		M4	4.300 mm	8.000 mm	0.8 mm to 1.2 mm	—	25	000000000	00000


		M5	5.200 mm	10.400 mm	0.8 mm to 1.2 mm	DIN 7603	25	000000000	00000
		M6	6.200 mm	9.900 mm	0.8 mm to 1.2 mm	DIN 7603	25	000000000	00000
		M6	6.200 mm	11.900 mm	0.8 mm to 1.2 mm	DIN 7603	25	000000000	00000
		M6	6.200 mm	12.400 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
		M8	8.200 mm	11.900 mm	0.8 mm to 1.2 mm	DIN 7603	25	000000000	00000
		M8	8.200 mm	12.400 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
		M8	8.200 mm	13.900 mm	0.8 mm to 1.2 mm	DIN 7603	25	000000000	00000
		M10	10.200 mm	13.900 mm	0.8 mm to 1.2 mm	DIN 7603	25	000000000	00000
		M10	10.200 mm	13.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	0000
		M10	10.200 mm	15.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000


		M12	12.200 mm	15.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
		M12	12.200 mm	16.200 mm	0.8 mm to 1.2 mm	DIN 7603	25	000000000	00000
		M12	12.200 mm	17.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
		M13	13.200 mm	17.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
		M14	14.200 mm	17.900 mm	0.8 mm to 1.2 mm	DIN 7603	10	000000000	00000
		M14	14.200 mm	17.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
		M14	14.200 mm	19.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
		M16	16.200 mm	19.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
		M16	16.200 mm	21.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
		M16	16.200 mm	21.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000


		M17	17.200 mm	21.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	0000
		M18	18.200 mm	21.900 mm	1.3 mm to 1.7 mm	DIN 7603	5	000000000	0000
		M18	18.200 mm	23.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
		M20	20.200 mm	23.900 mm	1.3 mm to 1.7 mm	DIN 7603	5	000000000	0000
		M20	20.200 mm	25.900 mm	1.3 mm to 1.7 mm	DIN 7603	5	000000000	00000
		M21	21.200 mm	25.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
		M22	22.200 mm	26.900 mm	1.3 mm to 1.7 mm	DIN 7603	5	000000000	00000
		M22	22.200 mm	28.900 mm	1.3 mm to 1.7 mm	DIN 7603	5	000000000	00000
		M24	24.300 mm	29.900 mm	1.8 mm to 2.2 mm	DIN 7603	5	000000000	00000
		M25	28.000 mm	36.500 mm	2.8 mm to 3.2 mm	—	1	000000000	00000

M26	26.300 mm	31.900 mm	1.8 mm to 2.2 mm	DIN 7603	5	000000000	00000
M27	27.300 mm	31.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000
M27	30.000 mm	38.000 mm	2.8 mm to 3.2 mm	—	1	000000000	00000
M28	28.300 mm	35.900 mm	1.3 mm to 1.7 mm	DIN 7603	5	000000000	00000
M30	30.300 mm	35.900 mm	1.8 mm to 2.2 mm	DIN 7603	5	000000000	00000
M32	32.300 mm	37.900 mm	1.8 mm to 2.2 mm	DIN 7603	5	000000000	00000
M33	33.300 mm	38.900 mm	1.8 mm to 2.2 mm	DIN 7603	5	000000000	00000
M36	36.300 mm	41.900 mm	1.8 mm to 2.2 mm	DIN 7603	5	000000000	00000
M36	36.300 mm	43.900 mm	1.8 mm to 2.2 mm	DIN 7603	1	000000000	00000
M38	38.300 mm	43.900 mm	1.8 mm to 2.2 mm	DIN 7603	1	000000000	00000
M42	42.300 mm	48.900 mm	1.8 mm to 2.2 mm	DIN 7603	1	000000000	00000
M48	48.300 mm	54.900 mm	1.8 mm to 2.2 mm	DIN 7603	1	000000000	00000

Cellulose-Filled Copper



		M6	6.200 mm	9.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000


		M8	8.200 mm	11.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
		M8	8.200 mm	13.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
		M10	10.200 mm	13.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
		M10	10.200 mm	15.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
		M12	12.200 mm	15.900 mm	1.8 mm to 2.2 mm	DIN 7603	25	000000000	00000
		M12	12.200 mm	17.900 mm	1.8 mm to 2.2 mm	DIN 7603	25	000000000	00000
		M14	14.200 mm	17.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000
		M14	14.200 mm	19.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000
		M16	16.200 mm	19.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000
		M18	18.200 mm	23.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000


		M20	20.200 mm	23.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000
		M20	20.200 mm	25.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000
		M22	22.200 mm	26.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000
		M24	24.300 mm	31.900 mm	2.3 mm to 2.7 mm	DIN 7603	10	000000000	00000
		M26	26.300 mm	30.900 mm	2.3 mm to 2.7 mm	DIN 7603	10	000000000	00000
		M26	26.300 mm	31.900 mm	2.3 mm to 2.7 mm	DIN 7603	10	000000000	00000
		M26	26.300 mm	33.900 mm	2.3 mm to 2.7 mm	DIN 7603	10	000000000	00000
		M28	28.300 mm	33.900 mm	2.3 mm to 2.7 mm	DIN 7603	5	000000000	00000
		M30	30.300 mm	35.900 mm	2.3 mm to 2.7 mm	DIN 7603	5	000000000	00000
		M32	32.300 mm	37.900 mm	2.3 mm to 2.7 mm	DIN 7603	5	000000000	00000


		M36	36.300 mm	41.900 mm	2.3 mm to 2.7 mm	DIN 7603	5	000000000	00000
		M38	38.300 mm	43.900 mm	2.3 mm to 2.7 mm	DIN 7603	5	000000000	00000
		M42	42.300 mm	48.900 mm	2.3 mm to 2.7 mm	DIN 7603	1	000000000	00000
		M48	48.300 mm	54.900 mm	2.3 mm to 2.7 mm	DIN 7603	1	000000000	00000
		M50	50.200 mm	56.900 mm	2.3 mm to 2.7 mm	DIN 7603	1	000000000	00000


		Aluminum



				No. 4	0.125"	0.281"	0.024" to 0.038"	—	100	000000000	00000


				No. 6	0.156"	0.281"	0.024" to 0.038"	—	100	000000000	00000
				No. 8	0.174"	0.312"	0.024" to 0.038"	—	100	000000000	00000
				No. 10	0.203"	0.375"	0.024" to 0.038"	—	100	000000000	00000
				1/4"	0.260"	0.500"	0.043" to 0.057"	—	100	000000000	00000
				5/16"	0.344"	0.625"	0.043" to 0.057"	—	100	000000000	00000
				3/8"	0.406"	0.656"	0.055" to 0.069"	—	50	000000000	00000
				1/2"	0.531"	0.812"	0.055" to 0.069"	—	50	000000000	00000
				5/8"	0.688"	0.938"	0.071" to 0.086"	—	50	000000000	00000
				3/4"	0.812"	1.062"	0.071" to 0.086"	—	25	000000000	00000
				1"	1.062"	1.375"	0.086" to 0.104"	—	10	000000000	00000


				M3	3.200 mm	6.400 mm	0.6 mm to 0.9 mm	—	100	000000000	00000
				M4	4.300 mm	8.000 mm	0.8 mm to 1.2 mm	—	100	000000000	00000
				M5	5.200 mm	9.000 mm	0.8 mm to 1.2 mm	—	100	000000000	00000
				M6	6.200 mm	9.900 mm	0.8 mm to 1.2 mm	DIN 7603	50	000000000	00000
				M6	6.200 mm	11.900 mm	0.8 mm to 1.2 mm	DIN 7603	50	000000000	00000
				M8	8.200 mm	11.900 mm	0.8 mm to 1.2 mm	DIN 7603	50	000000000	00000
				M8	8.200 mm	13.900 mm	0.8 mm to 1.2 mm	DIN 7603	10	000000000	0000
				M10	10.200 mm	13.900 mm	0.8 mm to 1.2 mm	DIN 7603	50	000000000	00000
M10				10.200 mm	13.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	0000
M10	10.200 mm			15.900 mm	0.8 mm to 1.2 mm	DIN 7603	50	000000000	00000


M10	10.200 mm			15.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	0000
M12	12.200 mm			15.900 mm	1.3 mm to 1.7 mm	DIN 7603	50	000000000	00000
M12	12.200 mm			17.900 mm	1.3 mm to 1.7 mm	DIN 7603	50	000000000	00000
M14	14.200 mm			17.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
M14	14.200 mm			19.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
M16	16.200 mm			19.900 mm	1.3 mm to 1.7 mm	DIN 7603	25	000000000	00000
M16	16.200 mm			21.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
M18	18.200 mm			21.900 mm	1.3 mm to 1.7 mm	DIN 7603	5	000000000	0000
M18	18.200 mm			23.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
M20	20.200 mm			23.900 mm	1.3 mm to 1.7 mm	DIN 7603	5	000000000	0000


M20	20.200 mm			25.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
M22	22.200 mm			26.900 mm	1.3 mm to 1.7 mm	DIN 7603	10	000000000	00000
M24	24.300 mm			29.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000
M24	24.300 mm			31.900 mm	1.8 mm to 2.2 mm	DIN 7603	5	000000000	0000
M26	26.300 mm			31.900 mm	1.8 mm to 2.2 mm	DIN 7603	10	000000000	00000
M27	30.000 mm			38.000 mm	2.8 mm to 3.2 mm	—	10	000000000	00000
M30	33.000 mm			42.000 mm	2.8 mm to 3.2 mm	—	5	000000000	00000
M36	39.000 mm			47.500 mm	2.8 mm to 3.2 mm	—	5	000000000	00000
M42	45.000 mm			53.000 mm	2.8 mm to 3.2 mm	—	5	000000000	00000

Hard Fiber

An economical alternative to metal crush washers, these compress easily to create a seal with less effort. However, fiber washers degrade faster than metal washers and aren't as heat resistant. They also don't seal quite as tightly as their plastic or rubber counterparts. These washers are reusable, as long as the material isn't damaged.

	ID, mm	OD, mm	Thk., mm	Specs. Met	Pkg. Qty.		Pkg.
Hard Fiber



	M5	5	8	0.8	DIN 7603	100	000000000	00000


	M5	5	10	0.8	DIN 7603	100	000000000	0000
	M6	6	9	0.8	DIN 7603	100	000000000	0000
	M6	6	10	0.8	DIN 7603	100	000000000	0000
	M8	8	12	0.8	DIN 7603	100	000000000	0000
	M8	8	14	0.8	DIN 7603	100	000000000	0000
	M10	10	14	0.8	DIN 7603	100	000000000	0000
	M10	10	16	1	DIN 7603	100	000000000	0000
	M12	12	16	0.8	DIN 7603	100	000000000	0000
	M12	12	18	1	DIN 7603	100	000000000	0000
	M12	12	20	0.8	DIN 7603	100	000000000	0000


	M12	12	24	0.8	DIN 7603	100	000000000	0000
	M14	14	18	1	DIN 7603	100	000000000	0000
	M14	14	24	0.8	DIN 7603	100	000000000	0000
	M16	16	21	0.8	DIN 7603	100	000000000	0000
	M18	18	22	0.8	DIN 7603	100	000000000	0000
	M18	18	24	0.8	DIN 7603	100	000000000	0000
	M22	22	27	0.8	DIN 7603	100	000000000	0000

Shims

With thickness tolerances as fine as a strand of hair, these shims precisely align, space, and level components on shafts, arbors, and machinery.

You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.

Aluminum—These shims are an alternative to stainless steel for rust resistance but aren't as hard so they may not retain their shape as well. One-third the weight of steel, they’re commonly used in robotics and automation.

Brass—With a warm, polished look, these shims are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.

	Thk.	Thk. Tolerance	ID Tolerance	OD Tolerance	Min. Hardness	Specs. Met	Pkg. Qty.		Pkg.
Aluminum







				1/4" ID × 3/8" OD

				0.005"	-0.0005" to 0.0005"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000


				0.01"	-0.001" to 0.001"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	0000
				0.016"	-0.0015" to 0.0015"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	0000
				0.02"	-0.002" to 0.002"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	0000
				0.032"	-0.0025" to 0.0025"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
				0.063"	-0.0035" to 0.0035"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	0000




						3/8" ID × 5/8" OD

						0.005"	-0.0005" to 0.0005"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	0000


						0.01"	-0.001" to 0.001"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
						0.016"	-0.0015" to 0.0015"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
						0.02"	-0.002" to 0.002"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	0000
						0.032"	-0.0025" to 0.0025"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
						0.063"	-0.0035" to 0.0035"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	0000
						0.125"	-0.007" to 0.007"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	5	000000000	0000




								1/2" ID × 3/4" OD

								0.005"	-0.0005" to 0.0005"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000


								0.01"	-0.001" to 0.001"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
								0.016"	-0.0015" to 0.0015"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
								0.02"	-0.002" to 0.002"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	0000
								0.032"	-0.0025" to 0.0025"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	0000
								0.063"	-0.0035" to 0.0035"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
								0.125"	-0.007" to 0.007"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	5	000000000	00000




										5/8" ID × 1" OD

										0.005"	-0.0005" to 0.0005"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000


										0.01"	-0.001" to 0.001"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
										0.016"	-0.0015" to 0.0015"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
										0.02"	-0.002" to 0.002"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
										0.032"	-0.0025" to 0.0025"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
										0.063"	-0.0035" to 0.0035"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
										0.125"	-0.007" to 0.007"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	5	000000000	00000




										3/4" ID × 1 1/8" OD

										0.005"	-0.0005" to 0.0005"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	5	000000000	0000


		0.01"	-0.001" to 0.001"							0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
		0.016"	-0.0015" to 0.0015"							0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
		0.02"	-0.002" to 0.002"							0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
		0.032"	-0.0025" to 0.0025"							0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
		0.063"	-0.0035" to 0.0035"							0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
		0.125"	-0.007" to 0.007"							0" to 0.011"	-0.002" to 0.002"	Not Rated	—	5	000000000	00000




										1" ID × 1 1/2" OD

				0.01"						-0.001" to 0.001"	0" to 0.011"	-0.002" to 0.002"	Not Rated	—	5	000000000	00000


				0.016"	-0.0015" to 0.0015"					0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
				0.02"	-0.002" to 0.002"					0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
				0.032"	-0.0025" to 0.0025"					0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000
				0.063"	-0.0035" to 0.0035"					0" to 0.011"	-0.002" to 0.002"	Not Rated	—	10	000000000	00000


				Brass







							1/4" ID × 3/8" OD

							0.005"				-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000


							0.01"				-0.0013" to 0.0013"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000
							0.02"				-0.003" to 0.003"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000




												3/8" ID × 5/8" OD

												0.002"	-0.0006" to 0.0006"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000


								0.005"	-0.0008" to 0.0008"			0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
								0.01"	-0.0013" to 0.0013"			0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000
								0.016"	-0.0025" to 0.0025"			0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
								0.02"	-0.003" to 0.003"			0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
								0.025"	-0.003" to 0.003"			0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000




												1/2" ID × 3/4" OD

												0.005"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000


0.01"	-0.0013" to 0.0013"											0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
0.016"	-0.0025" to 0.0025"											0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
0.02"	-0.003" to 0.003"											0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000
0.025"	-0.003" to 0.003"											0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000




												5/8" ID × 1" OD

												0.005"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000


		0.01"										-0.0013" to 0.0013"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000
		0.016"	-0.0025" to 0.0025"									0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
		0.02"	-0.003" to 0.003"									0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000
		0.025"	-0.003" to 0.003"									0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000




												3/4" ID × 1 1/8" OD

												0.005"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000


												0.01"	-0.0013" to 0.0013"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000
				0.016"								-0.0025" to 0.0025"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
				0.02"	-0.003" to 0.003"							0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	0000
				0.025"	-0.003" to 0.003"							0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000




						7/8" ID × 1 3/8" OD

						0.005"				-0.0008" to 0.0008"		0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000


						0.01"				-0.0013" to 0.0013"		0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
						0.02"				-0.003" to 0.003"		0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000




										1" ID × 1 1/2" OD

										0.005"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000


										0.01"	-0.0013" to 0.0013"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
										0.016"	-0.0025" to 0.0025"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	5	000000000	0000
										0.02"	-0.003" to 0.003"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
										0.025"	-0.003" to 0.003"	0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000




								1 1/4" ID × 1 3/4" OD

								0.005"	-0.0008" to 0.0008"			0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000


								0.01"	-0.0013" to 0.0013"			0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000
								0.02"	-0.003" to 0.003"			0" to 0.011"	-0.002" to 0.002"	Rockwell B60	ASTM B36	10	000000000	00000

Sealing Washer Assortments

Keep a collection of metal sealing washers on hand to prevent leaks while distributing weight evenly under nuts and screws. Also known as crush washers, these deform when tightened to lock air and fluid in, while keeping dust and contaminants out. They are not reusable.

Labels in the lid include our part numbers, so it's easy to replenish the assortments.

Copper—Softer than aluminum washers, these deform easily to create a tight seal with less effort. They resist rusting in corrosive environments, but will develop a green patina over time.

Aluminum—These washers are an economical alternative to copper. They have similar corrosion resistance but require more effort to crush.

	Sizes Included	Specs. Met	Container Type		Each
Copper



	555	For M5 to M42 Screw Sizes	DIN 7603	Plastic Box	000000000	0000000


	Aluminum



			570	For M6 to M30 Screw Sizes	DIN 7603	Plastic Box	000000000	000000