Polyethylene Washers | McMaster-Carr

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	Material Material

HDPE Plastic

LDPE Plastic

Polyethylene Plastic

UHMW Plastic

	System of Measurement System of Measurement

Inch

Metric

	For Screw Size For Screw Size

	ID ID

	OD OD

	Thickness Thickness

	Length Length

	Washer Type Washer Type


Flat	Self-Retaining

	Color Color

	Black		Off-White
	White		Gray
	Red		Blue

	Maximum Temperature Maximum Temperature

Less than 250° F

Not Rated

	Minimum Temperature Minimum Temperature

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Hardness Hardness

	For Shaft Diameter For Shaft Diameter

	Shape Shape

	Round

	Specifications Met Specifications Met

ASME

FDA Compliant

NSF/ANSI

	Lubrication Lubrication

Not Required

	Bearing Type Bearing Type

	Plain

	Environment Environment

Food and Beverage

	Tensile Strength Tensile Strength

1,000 psi

4,000 psi

	Dielectric Strength Dielectric Strength

Not Rated

	Dynamic Thrust Load Capacity Dynamic Thrust Load Capacity

	For Use With For Use With

Compressed Air

Water-Based Solutions

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177 Products

About Washers

About Plain Bearings

These plastic washers are good electrical insulators.

UHMW washers have excellent moisture and abrasion resistance and good resistance to chemicals.

For technical drawings and 3-D models, click on a part number.

				Temperature Range, °F
For Screw Size	ID	OD	Thick.	Min.	Max.	Hardness	Specifications Met	Color	Pkg. Qty.		Pkg.
UHMW Plastic
No. 2	0.094"	0.188"	0.026"-0.036"	Not Rated	180°	Not Rated	__	Off-White	25	000000000	00000
No. 4	0.120"	0.250"	0.026"-0.036"	Not Rated	180°	Not Rated	__	Off-White	25	000000000	0000
No. 5	0.126"	0.315"	0.029"-0.033"	Not Rated	180°	Not Rated	__	Off-White	25	000000000	00000
No. 6	0.150"	0.375"	0.026"-0.036"	Not Rated	180°	Not Rated	__	Off-White	25	000000000	0000
No. 8	0.175"	0.375"	0.026"-0.036"	Not Rated	180°	Not Rated	__	Off-White	25	000000000	0000
No. 10	0.203"	0.438"	0.026"-0.036"	Not Rated	180°	Not Rated	__	Off-White	25	000000000	0000
No. 12	0.250"	0.562"	0.060"-0.067"	Not Rated	180°	Not Rated	ASME B18.21.1	Off-White	10	000000000	00000
1/4"	0.265"	0.500"	0.026"-0.036"	Not Rated	180°	Not Rated	__	Off-White	25	000000000	0000
5/16"	0.328"	0.562"	0.026"-0.036"	Not Rated	180°	Not Rated	__	Off-White	25	000000000	0000
3/8"	0.390"	0.625"	0.026"-0.036"	Not Rated	180°	Not Rated	__	Off-White	25	000000000	0000
7/16"	0.469"	0.922"	0.060"-0.067"	Not Rated	180°	Not Rated	ASME B18.21.1	Off-White	10	000000000	00000
1/2"	0.515"	0.885"	0.057"-0.067"	Not Rated	180°	Not Rated	__	Off-White	10	000000000	0000
9/16"	0.594"	1.156"	0.089"-0.099"	Not Rated	180°	Not Rated	ASME B18.21.1	Off-White	10	000000000	0000
5/8"	0.640"	1.062"	0.057"-0.067"	Not Rated	180°	Not Rated	__	Off-White	10	000000000	0000
3/4"	0.765"	1.312"	0.057"-0.067"	Not Rated	180°	Not Rated	__	Off-White	10	000000000	0000
7/8"	0.935"	1.750"	0.115"-0.130"	Not Rated	180°	Not Rated	ASME B18.21.1	Off-White	10	000000000	00000
1"	1.025"	1.750"	0.057"-0.067"	Not Rated	180°	Not Rated	__	Off-White	5	000000000	0000

Metric Plastic Washers

These plastic washers are good electrical insulators.

UHMW washers have excellent moisture and abrasion resistance and good resistance to chemicals.

For technical drawings and 3-D models, click on a part number.

				Temperature Range, °F
For Screw Size	ID, mm	OD, mm	Thick., mm	Min.	Max.	Hardness	Pkg. Qty.		Pkg.
UHMW Plastic
Off-White
M2	2.1	5.0	0.7-0.9	Not Rated	180°	Not Rated	10	000000000	000000
M3	3.2	8.0	0.7-0.9	Not Rated	180°	Not Rated	10	000000000	00000
M4	4.3	9.0	0.7-0.9	Not Rated	180°	Not Rated	10	000000000	00000
M5	5.3	11.0	0.9-1.1	Not Rated	180°	Not Rated	10	000000000	00000
M6	6.4	12.0	1.5-1.7	Not Rated	180°	Not Rated	5	000000000	0000
M7	7.4	14.0	1.5-1.7	Not Rated	180°	Not Rated	5	000000000	0000
M8	8.4	18.0	1.9-2.1	Not Rated	180°	Not Rated	5	000000000	0000
M10	10.5	22.0	2.2-2.5	Not Rated	180°	Not Rated	5	000000000	0000
M12	13.0	24.0	2.2-2.5	Not Rated	180°	Not Rated	5	000000000	0000
M14	15.0	30.0	3.0-3.3	Not Rated	180°	Not Rated	1	000000000	0000
M16	17.0	30.0	3.0-3.3	Not Rated	180°	Not Rated	1	000000000	0000
M18	19.0	34.0	3.0-3.3	Not Rated	180°	Not Rated	1	000000000	0000
M20	21.0	37.0	3.0-3.3	Not Rated	180°	Not Rated	1	000000000	0000

Self-Retaining Washers

A specially shaped ID grips your screw shank tightly. All of these washers are good electrical insulators.

Polyethylene washers are softer, more flexible, and withstand moisture better than nylon washers. They are not as wear resistant.

For technical drawings and 3-D models, click on a part number.

Inch and Metric

				Temperature Range, °F
For Screw Size	ID	OD	Thick.	Min.	Max.	Hardness	Choose a Color	Pkg. Qty.		Pkg.
Polyethylene Plastic
No. 3, M2.5	0.106"	0.256"	0.037"-0.049"	35°	145°	Durometer 43D	Blue, Gray, Red	100	000000000	000000
No. 10, M5	0.209"	0.433"	0.045"-0.057"	35°	145°	Durometer 43D	Blue, Gray, Red	100	000000000	00000
1/4", M6	0.252"	0.472"	0.057"-0.069"	35°	145°	Durometer 43D	Blue, Gray, Red	100	000000000	00000
5/16", M8	0.331"	0.669"	0.073"-0.085"	35°	145°	Durometer 43D	Blue, Gray, Red	100	000000000	00000
3/8", M10	0.413"	0.709"	0.053"-0.065"	35°	145°	Durometer 43D	Blue	50	000000000	00000

Polyethylene Unthreaded Spacers

Almost nonabsorbent, these unthreaded LDPE and HDPE spacers won't swell when exposed to water.

HDPE spacers are harder, denser, and more chemical resistant than LDPE spacers.

For technical drawings and 3-D models, click on a part number.

LDPE Plastic
Lg.	For Screw Size	ID	Temperature Range, °F	Color	Pkg. Qty.		Pkg.
3/16" OD
3/16"	No. 4	0.115"	-60° to 175°	Black	20	000000000	00000
5/16"	No. 4	0.115"	-60° to 175°	Black	20	000000000	0000
3/8"	No. 4	0.115"	-60° to 175°	Black	20	000000000	0000
1/2"	No. 4	0.115"	-60° to 175°	Black	20	000000000	0000
3/4"	No. 4	0.115"	-60° to 175°	Black	20	000000000	00000
1"	No. 4	0.115"	-60° to 175°	Black	20	000000000	00000
1/4" OD
3/16"	No. 4	0.115"	-60° to 175°	Black	20	000000000	0000
3/16"	No. 6	0.140"	-60° to 175°	Black	20	000000000	0000
1/4"	No. 4	0.115"	-60° to 175°	Black	20	000000000	0000
1/4"	No. 6	0.140"	-60° to 175°	Black	20	000000000	0000
5/16"	No. 4	0.115"	-60° to 175°	Black	20	000000000	0000
5/16"	No. 6	0.140"	-60° to 175°	Black	20	000000000	0000
3/8"	No. 4	0.115"	-60° to 175°	Black	20	000000000	0000
3/8"	No. 6	0.140"	-60° to 175°	Black	20	000000000	0000
1/2"	No. 4	0.115"	-60° to 175°	Black	20	000000000	00000
1/2"	No. 6	0.140"	-60° to 175°	Black	20	000000000	0000
5/16" OD
3/16"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
1/4"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
5/16"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
3/8"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
1/2"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
3/4"	No. 10	0.192"	-60° to 175°	Black	20	000000000	00000
1"	No. 10	0.192"	-60° to 175°	Black	20	000000000	00000
3/8" OD
3/16"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
1/4"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
3/8"	No. 10	0.192"	-60° to 175°	Black	20	000000000	00000
1/2"	No. 10	0.192"	-60° to 175°	Black	20	000000000	00000
3/4"	No. 10	0.192"	-60° to 175°	Black	20	000000000	00000
1"	No. 10	0.192"	-60° to 175°	Black	20	000000000	00000
1 1/2"	No. 10	0.192"	-60° to 175°	Black	20	000000000	00000
1/2" OD
3/16"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
3/16"	1/4"	0.260"	-60° to 175°	Black	20	000000000	0000
1/4"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
1/4"	1/4"	0.260"	-60° to 175°	Black	20	000000000	0000
5/16"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
3/8"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
3/8"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
1/2"	No. 10	0.192"	-60° to 175°	Black	20	000000000	0000
1/2"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
5/8"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
3/4"	No. 10	0.192"	-60° to 175°	Black	20	000000000	00000
3/4"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
7/8"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
1"	No. 10	0.192"	-60° to 175°	Black	20	000000000	00000
1"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
1 1/2"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
1 3/4"	1/4"	0.260"	-60° to 175°	Black	10	000000000	0000
2"	1/4"	0.260"	-60° to 175°	Black	10	000000000	0000
3"	1/4"	0.260"	-60° to 175°	Black	5	000000000	0000
4"	1/4"	0.260"	-60° to 175°	Black	5	000000000	00000
6"	1/4"	0.260"	-60° to 175°	Black	5	000000000	00000
3/4" OD
3/8"	1/4"	0.260"	-60° to 175°	Black	20	000000000	0000
3/8"	5/16"	0.325"	-60° to 175°	Black	20	000000000	0000
3/8"	3/8"	0.385"	-60° to 175°	Black	20	000000000	0000
1/2"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
1/2"	5/16"	0.325"	-60° to 175°	Black	20	000000000	00000
1/2"	3/8"	0.385"	-60° to 175°	Black	20	000000000	0000
5/8"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
5/8"	5/16"	0.325"	-60° to 175°	Black	20	000000000	00000
5/8"	3/8"	0.385"	-60° to 175°	Black	20	000000000	0000
3/4"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
3/4"	5/16"	0.325"	-60° to 175°	Black	20	000000000	00000
3/4"	3/8"	0.385"	-60° to 175°	Black	20	000000000	00000
1"	1/4"	0.260"	-60° to 175°	Black	20	000000000	00000
1"	5/16"	0.325"	-60° to 175°	Black	10	000000000	0000
1"	3/8"	0.385"	-60° to 175°	Black	20	000000000	00000
1 1/2"	5/16"	0.325"	-60° to 175°	Black	10	000000000	00000
1 1/2"	3/8"	0.385"	-60° to 175°	Black	20	000000000	00000
1 3/4"	1/4"	0.260"	-60° to 175°	Black	10	000000000	00000
1 3/4"	5/16"	0.325"	-60° to 175°	Black	10	000000000	00000
1 3/4"	3/8"	0.385"	-60° to 175°	Black	20	000000000	00000
2"	1/4"	0.260"	-60° to 175°	Black	10	000000000	00000
2"	5/16"	0.325"	-60° to 175°	Black	10	000000000	00000
2"	3/8"	0.385"	-60° to 175°	Black	10	000000000	00000
2 1/2"	3/8"	0.385"	-60° to 175°	Black	10	000000000	00000
2 3/4"	3/8"	0.385"	-60° to 175°	Black	5	000000000	0000
3"	3/8"	0.385"	-60° to 175°	Black	5	000000000	0000
4"	3/8"	0.385"	-60° to 175°	Black	5	000000000	00000
6"	3/8"	0.385"	-60° to 175°	Black	1	000000000	0000
1" OD
1/2"	1/2"	0.510"	-60° to 175°	Black	20	000000000	00000
3/4"	1/2"	0.510"	-60° to 175°	Black	20	000000000	00000
1"	1/2"	0.510"	-60° to 175°	Black	10	000000000	00000
1 1/4"	1/2"	0.510"	-60° to 175°	Black	10	000000000	00000
1 1/2"	1/2"	0.510"	-60° to 175°	Black	10	000000000	00000
1 3/4"	1/2"	0.510"	-60° to 175°	Black	10	000000000	00000
2"	1/2"	0.510"	-60° to 175°	Black	5	000000000	00000
2 1/4"	1/2"	0.510"	-60° to 175°	Black	5	000000000	00000
2 1/2"	1/2"	0.510"	-60° to 175°	Black	5	000000000	00000
2 3/4"	1/2"	0.510"	-60° to 175°	Black	5	000000000	00000
3"	1/2"	0.510"	-60° to 175°	Black	5	000000000	00000
4"	1/2"	0.510"	-60° to 175°	Black	1	000000000	0000
6"	1/2"	0.510"	-60° to 175°	Black	1	000000000	0000
HDPE Plastic
12mm OD
6mm	M5	5.300mm	-40° to 200°	Black	25	00000000	00000
6mm	M8	8.200mm	-40° to 200°	Black	25	00000000	00000
8mm	M5	5.300mm	-40° to 200°	Black	25	00000000	00000
8mm	M8	8.200mm	-40° to 200°	Black	25	00000000	00000
13mm	M5	5.300mm	-40° to 200°	Black	10	00000000	0000
13mm	M8	8.200mm	-40° to 200°	Black	10	00000000	0000
20mm	M5	5.300mm	-40° to 200°	Black	10	00000000	0000
20mm	M8	8.200mm	-40° to 200°	Black	10	00000000	0000
25mm	M5	5.300mm	-40° to 200°	Black	10	00000000	00000
25mm	M8	8.200mm	-40° to 200°	Black	10	00000000	0000
30mm	M8	8.200mm	-40° to 200°	Black	10	00000000	00000
12.5mm OD
6mm	M6	6.400mm	-40° to 200°	Black	25	00000000	00000
8mm	M6	6.400mm	-40° to 200°	Black	25	00000000	00000
13mm	M6	6.400mm	-40° to 200°	Black	10	00000000	0000
20mm	M6	6.400mm	-40° to 200°	Black	10	00000000	00000
25mm	M6	6.400mm	-40° to 200°	Black	10	00000000	00000
30mm	M6	6.400mm	-40° to 200°	Black	5	00000000	0000
20mm OD
6mm	M6	6.400mm	-40° to 200°	Black	10	00000000	0000
6mm	M8	8.400mm	-40° to 200°	Black	10	00000000	0000
8mm	M6	6.400mm	-40° to 200°	Black	10	00000000	00000
8mm	M8	8.400mm	-40° to 200°	Black	10	00000000	00000
13mm	M6	6.400mm	-40° to 200°	Black	5	00000000	00000
13mm	M8	8.400mm	-40° to 200°	Black	5	00000000	0000
13mm	M10	10.200mm	-40° to 200°	Black	5	00000000	0000
16mm	M10	10.200mm	-40° to 200°	Black	5	00000000	00000
20mm	M6	6.400mm	-40° to 200°	Black	1	00000000	0000
20mm	M8	8.400mm	-40° to 200°	Black	1	00000000	0000
20mm	M10	10.200mm	-40° to 200°	Black	5	00000000	00000
25mm	M6	6.400mm	-40° to 200°	Black	1	00000000	0000
25mm	M8	8.400mm	-40° to 200°	Black	1	00000000	0000
25mm	M10	10.200mm	-40° to 200°	Black	1	00000000	0000
30mm	M6	6.400mm	-40° to 200°	Black	1	00000000	0000
30mm	M8	8.400mm	-40° to 200°	Black	1	00000000	0000
30mm	M10	10.200mm	-40° to 200°	Black	1	00000000	0000

Food Industry Dry-Running Thrust Bearings

Made of FDA listed materials for use in food applications, these bearings also withstand caustic and washdown environments.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

UHMW Plastic Bearings

For 1/4" Shaft Dia.
OD	Thick.	Dynamic Thrust Load Capacity	Color	Temperature Range, °F	Specifications Met		Each
5/8"	1/16"	26 lbs. @ 120 rpm	White	-100° to 180°	FDA Compliant 21 CFR 177.1520, NSF/ANSI 2	0000000	00000
For 3/8" Shaft Dia.
3/4"	1/16"	28 lbs. @ 120 rpm	White	-100° to 180°	FDA Compliant 21 CFR 177.1520, NSF/ANSI 2	0000000	0000
For 1/2" Shaft Dia.
1"	1/16"	37 lbs. @ 120 rpm	White	-100° to 180°	FDA Compliant 21 CFR 177.1520, NSF/ANSI 2	0000000	0000
For 3/4" Shaft Dia.
1 3/8"	1/8"	95 lbs. @ 60 rpm	White	-100° to 180°	FDA Compliant 21 CFR 177.1520, NSF/ANSI 2	0000000	0000
For 1" Shaft Dia.
2"	1/8"	150 lbs. @ 60 rpm	White	-100° to 180°	FDA Compliant 21 CFR 177.1520, NSF/ANSI 2	0000000	00000
For 1 1/2" Shaft Dia.
3"	1/8"	450 lbs. @ 30 rpm	White	-100° to 180°	FDA Compliant 21 CFR 177.1520, NSF/ANSI 2	0000000	00000

Wedge Air Nozzles

Shaped to fit into extremely tight spaces, these nozzles can be used to remove parts from molds. Tap the wedge into position, attach the nozzle to a blowgun, and activate airflow to release the part.

	Air Inlet
O'all Lg.	Pipe Size	Thread Type	Gender	Air Consumption	Max. Temp.	Volume	Thick.	Tip Wd.	Max. Inlet Pressure	Material		Each
6 3/4"	1/8	NPT	Male	Not Rated	Not Rated	Not Rated	3/16"-15/16"	3 3/16"	Not Rated	Polyethylene Plastic	0000000	000000

Parts Washers for Water-Based Solutions

Turn on the pump and solution will flow to the flexible polyethylene hose and flow-through brush. These parts washers have a filter that removes large particles to keep the solution cleaner longer and a 1.4kW heater with thermostat to increase the cleaning power. Note: Do not use with flammable liquids.

		Usable Tub			O'all
Cap.., gal.	Max. Liquid Level	Lg.	Wd.	Ht.	Lg.	Wd.	Ht.	Max. Temp., °F	Voltage	Material	Features		Each
Soak/Spray
30	9"	35"	21 1/2"	15"	43"	28 1/2"	38"	110°	120V AC	Polyethylene Plastic	Drain Plug, Filter, Heater, Hose with Flow-Through Brush, Parts Shelf	00000000	000000000

Replacement Parts
18" Plastic Hose	0000000	Each	000000
Filter Cartridge	0000000	Each	0000
120V AC Pump	00000000	Each	000000
Filter Screen	0000000	Each	00000

Mobile Parts Washers for Water-Based Solutions

A dolly with casters makes it easy to move this parts washer around your facility. Turn on the pump and solution will flow to the flexible metal spigot and polyethylene hose with flow-through brush. Washer has a filter that removes large particles to keep the solution cleaner longer and a heater to increase the cleaning power. A fusible link closes the cover in the event of a fire. Note: Do not use with flammable liquids.

			Usable Tub			O'all
Cap., gal.	Drum Cap., gal.	Max. Liquid Level	Lg.	Wd.	Ht.	Lg.	Wd.	Ht.	Max. Temp., °F	Voltage	Material	Features		Each
Spray
12	15	15 3/4"	20"	24"	7"	28"	28"	41"	110°	120V AC	Polyethylene Plastic	Flexible Spigot, Safety Cover with Fusible Link, Filter, Heater, Hose with Flow-Through Brush	0000000	000000000

Bench-Top Parts Washers for Water-Based Solutions

Clean small parts with this compact washer. Turn on the pump to circulate the solution to flow-through brush. Washer has a heater to increase cleaning power. Note: Do not use with flammable liquids.

		Usable Tub			O'all
Cap., gal.	Max. Liquid Level	Lg.	Wd.	Ht.	Lg.	Wd.	Ht.	Max. Temp., °F	Voltage	Material	Features		Each
Soak/Spray
5 1/2	5"	13 1/4"	19"	7"	15 1/2"	21 1/2"	10 1/2"	110°	120V AC	Polyethylene Plastic	Heater, Hose with Flow-Through Brush	0000000	0000000

Replacement Parts
120V ACPump	0000000	Each	0000000
Closure Assembly	0000000	Each	00000