Trim Rings | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	ID ID

	Material Material

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

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

	Shape Shape

	Round
	Straight
	Rectangle

	Duct Size Duct Size

3
3 1/2
4
4 1/2
5
5 1/2
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
32
34
36
38
40
42
44
46
48
52

	Mount Type Mount Type


Snap In	Press Fit

	For Pipe Size For Pipe Size

	Color Color

	Black		White
	Gray		Dark Gray
	Light Gray		Red
	Blue

	Flange Diameter (D) Flange Diameter (D)

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

DFARS Specialty Metals
COTS-Exempt

	Flange Mount Type Flange Mount Type

Screw On

Weld On

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

RoHS Compliant

	For Use Outdoors For Use Outdoors

Yes

	For Use With For Use With

Wire, Cable, and Cords

Pipe and Tubing

Shafts

	Overall Height (E) Overall Height (E)

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	OD OD

	Hardness Rating Hardness Rating

Medium Hard

Hard

Extra Hard

	Hardness Hardness

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

REACH Compliant

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About Durometer Hardness Scales

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.

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.

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.

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.

Furniture Grommets

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

Expandable Furniture Grommets

The center hole has flaps that flex to accommodate various sizes of wire, cable, and cords while still providing dust and debris protection. Use these grommets to eliminate cord clutter on desktops, countertops, benchtops, and other work surfaces.

Flexible Furniture Grommets

Squeeze these flexible grommets to open the center flap—once wire, cable, and cords pass through, the flap closes tightly for dust and debris protection as well as a finished look. Use them to eliminate cord clutter on desktops, countertops, benchtops, and other work surfaces.

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.

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.