Insulating Bushings | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	ID ID

	OD OD

	For Screw Size For Screw Size

	Material Material

Fabric-
Reinforced
Buna-N
Rubber

Aluminum

Zinc

	Length Length

	Color Color

	Off-White		Gray
	Black		White
	Beige		Red
	Green		Amber
	Blue		Coral
	Yellow		Brown
	Clear		Pink
	Purple

	Shape Shape

	For Hole Diameter (A) For Hole Diameter (A)

	For Material Thickness (B) For Material Thickness (B)

	Maximum Temperature Maximum Temperature

	Thickness Thickness

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

	Sleeve OD Sleeve OD

	Minimum Temperature Minimum Temperature

	Hardness Hardness

	Flange Diameter (D) Flange Diameter (D)

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Mount Type Mount Type


Snap In	Press Fit

Heat Shrink	Screw

	Specifications Met Specifications Met

	Conduit Trade Size Conduit Trade Size

	Tensile Strength Tensile Strength

2,499 Products

Fasteners

Electrical-Insulating Sleeve Washers

Also known as shoulder washers.

Nylon Unthreaded Spacers

These spacers have excellent wear and abrasion resistance. Exposure to moisture may cause them to expand.

Polyethylene Unthreaded Spacers

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

PEEK Unthreaded Spacers

Use PEEK spacers as an alternative to metal spacers in high-temperature, high-stress applications. They resist chemicals, wear, and moisture.

Polypropylene Unthreaded Spacers

Polypropylene spacers have a hard surface and resist many chemicals and solvents.

PTFE Unthreaded Spacers

PTFE spacers have a slippery surface and surpass most plastic spacers when it comes to chemical resistance and performance in extreme temperatures.

Acetal Unthreaded Spacers

Naturally slippery and wear resistant, acetal spacers also offer some resistance to moisture.

Polycarbonate Unthreaded Spacers

Made of FDA-listed material, these clear spacers can be used in food and beverage applications.

Electrical-Insulating Unthreaded Spacers

Protect components from electrical charges.

Vibration-Damping Unthreaded Spacers

Reduce vibration, shock, and noise with these spacers that compress between components.

Unthreaded Spacer Stock

Cut stock to the length you need.

Electrical-Insulating Female Threaded Standoffs

Protect components from electrical charges.

Sleeve Washer Assortments

Also known as shoulder and insulator washers, these nonmetal washers block electrical current and prevent corrosion from mating different types of metal.

Color-Coded Ring Shims

Precisely align, level, and adjust spacing on fasteners, shafts, and machinery with these shims, which are color-coded by thickness for easy identification.

Color-Coded Ring Shim Sets

Be prepared with ring shims in a variety of thicknesses. These shims are color-coded by thickness for easy identification.

Fittings for Medium-Wall (IMC) and Thick-Wall (Rigid) Steel Conduit

Grommets for Medium-Wall (IMC)
and Thick-Wall (Rigid) Steel Conduit

Connect to the end of conduit or a fitting to protect wires from abrasion when being pulled.

Grounding Clamps for Medium-Wall (IMC)
and Thick-Wall (Rigid) Steel Conduit

Ground conduit by running a ground wire through the attached lug.

Grommets

Locking Grommets

These grommets snap into place and have wings that expand against the sides of the hole to lock them in position. Use them to protect wire, cable, and cords by turning rough-edged and uneven holes into smooth holes.

Expandable Locking Grommets

The center hole has flaps that flex to hold and protect various sizes of wire, cable, and cords while keeping out dust and debris. Snap these grommets into place and their wings expand against the sides of the hole to lock them in position. Use them to turn rough-edged and uneven holes into smooth holes.

Grommets

Push these flexible grommets into place to protect wire, cable, and cords by turning rough-edged and uneven holes into smooth, insulated holes. Commonly used in metal panels, they also damp vibration.

High-Temperature Grommets

These flexible grommets withstand temperatures of 450° F or greater, which is approximately twice as high as our standard grommets. Push them into place to protect wire, cable, and cords by turning rough-edged and uneven holes into smooth, insulated holes. Commonly used in metal panels, they also damp vibration.

Expandable Grommets

The center hole has flaps that flex to hold and protect various sizes of wire, cable, and cords while keeping out dust and debris. Push these grommets into place. They turn rough-edged and uneven holes into smooth, insulated holes.

Split Grommets

A slit in the side of these grommets allows you to install them around wire, cable, and cords that are already in place. They snap into the hole and their wings hold them tight. Use them to turn rough-edged and uneven holes into smooth, insulated holes.

Snap-In Pipe and Tubing Grommets

These grommets have two flanges that snap around holes and flex to compensate for misalignment and movement of pipe and tubing. They're often used for routing applications in panel walls.

Push-In Pipe and Tubing Grommets

Press these flexible grommets into holes and their tapered inner wall will expand when pipe or tubing is inserted to hold them snugly in place. They're often used for routing applications on metal, plastic, and fiberglass tanks.

Shrink-to-Fit Sealing Grommets

Apply heat and these grommets shrink around wire, cable, and cords to keep out dust, debris, and moisture.

Split Sealing Grommets

The two‐piece design makes it easy to install and seal these grommets around wire, cable, and cords that are already in place. Use them to keep out dust, debris, and moisture.

Create-Your-Own Split Sealing Grommets

Cut the center of these grommets with a utility knife to create custom IDs. The two‐piece design makes it easy to install and seal these grommets around wire, cable, and cords that are already in place. Use them to keep out dust, debris, and moisture.

Shaft Grommets

Support shafts, bearings, and other moving parts that are routed through a hole. These grommets are slippery to allow parts to move freely in the hole. Install them on thin sheet-metal panels.

Furniture Grommets

Eliminate clutter on desktops, countertops, benchtops, and other work surfaces by organizing wire, cable, and cords.

Brush-Style Furniture Grommets

Wire, cable, and cords pass through the grommet opening while the bristles fill in the gaps to control dust and debris. Use these grommets to eliminate cord clutter on desktops, countertops, benchtops, and other work surfaces.

Compressible-Stem Push-In Bumpers

The stem on these bumpers compresses to fit into tight holes. Push the stem into a hole for quick installation. These bumpers are commonly used as feet on instruments and bench-top equipment to keep them from sliding. They're also good as spacers between sheets of material. Also known as stem and grommet bumpers.

Linear Bearings

High-Speed Linear Sleeve Bearings

A ceramic liner makes high speeds as well as rapid acceleration and deceleration possible.

High-Speed Ultra-Thin Linear Sleeve Bearings

Use these ultra-thin sleeve bearings in high-speed applications where clearance is a concern.

High-Speed Linear Sleeve
Bearings for Support Rail Shafts

These bearings have a ceramic liner to help them achieve high speeds as well as rapid acceleration and deceleration.

High-Load High-Speed Mounted Linear Sleeve Bearings

With two bearings mounted in a single housing, these bearings have load capacities more than 10 times as high as standard mounted linear sleeve bearings. A ceramic liner helps them achieve high speeds as well as rapid acceleration and deceleration.

High-Load Mounted Linear Sleeve Bearings

With two bearings mounted in one housing, these sleeve bearings can handle heavier loads than standard mounted linear sleeve bearings.

High-Speed Flange-Mounted Linear Sleeve Bearings

A ceramic coating makes high speeds as well as rapid acceleration and deceleration possible.

High-Speed Mounted Linear Sleeve Bearings

A ceramic coating makes high speeds as well as rapid acceleration and deceleration possible.

High-Speed Mounted Linear Sleeve
Bearings for Support Rail Shafts

A ceramic coating makes high speeds as well as rapid acceleration and deceleration possible.

High-Load High-Speed Mounted Linear
Sleeve Bearings for Support Rail Shafts

With two bearings mounted in a single housing, these bearings have higher load capacities than standard ones. A ceramic liner helps them achieve high speeds as well as rapid acceleration and deceleration.

Electrically Isolating Servomotor Precision Flexible Shaft Couplings

Electrically Isolating Servomotor
Precision Flexible Shaft Couplings

An acetal plastic spacer at the center of these couplings insulates bearings, encoders, and other shaft components from stray electric current. Use them with servomotors, which sometimes generate current that travels down the shaft and can damage circuit boards, interfere with readings, and cause wear on bearing raceways.

Fasteners

Electrical-Insulating Sleeve Washers

Nylon Unthreaded Spacers

Polyethylene Unthreaded Spacers

PEEK Unthreaded Spacers

Polypropylene Unthreaded Spacers

PTFE Unthreaded Spacers

Acetal Unthreaded Spacers

Polycarbonate Unthreaded Spacers

Electrical-Insulating Unthreaded Spacers

Vibration-Damping Unthreaded Spacers

Unthreaded Spacer Stock

Electrical-Insulating Female Threaded Standoffs

Sleeve Washer Assortments

Color-Coded Ring Shims

Color-Coded Ring Shim Sets

Fittings for Medium-Wall (IMC) and Thick-Wall (Rigid) Steel Conduit

Grommets for Medium-Wall (IMC)and Thick-Wall (Rigid) Steel Conduit

Grounding Clamps for Medium-Wall (IMC)and Thick-Wall (Rigid) Steel Conduit

Grommets

Locking Grommets

Expandable Locking Grommets

Grommets

High-Temperature Grommets

Expandable Grommets

Split Grommets

Snap-In Pipe and Tubing Grommets

Push-In Pipe and Tubing Grommets

Shrink-to-Fit Sealing Grommets

Split Sealing Grommets

Create-Your-Own Split Sealing Grommets

Shaft Grommets

Furniture Grommets

Brush-Style Furniture Grommets

Compressible-Stem Push-In Bumpers

Compressible-Stem Push-In Bumpers

Linear Bearings

High-Speed Linear Sleeve Bearings

High-Speed Ultra-Thin Linear Sleeve Bearings

High-Speed Linear SleeveBearings for Support Rail Shafts

High-Load High-Speed Mounted Linear Sleeve Bearings

High-Load Mounted Linear Sleeve Bearings

High-Speed Flange-Mounted Linear Sleeve Bearings

High-Speed Mounted Linear Sleeve Bearings

High-Speed Mounted Linear SleeveBearings for Support Rail Shafts

High-Load High-Speed Mounted LinearSleeve Bearings for Support Rail Shafts

Electrically Isolating Servomotor Precision Flexible Shaft Couplings

Electrically Isolating ServomotorPrecision Flexible Shaft Couplings

Grommets for Medium-Wall (IMC)
and Thick-Wall (Rigid) Steel Conduit

Grounding Clamps for Medium-Wall (IMC)
and Thick-Wall (Rigid) Steel Conduit

High-Speed Linear Sleeve
Bearings for Support Rail Shafts

High-Speed Mounted Linear Sleeve
Bearings for Support Rail Shafts

High-Load High-Speed Mounted Linear
Sleeve Bearings for Support Rail Shafts

Electrically Isolating Servomotor
Precision Flexible Shaft Couplings