Plastic bushings and grommets provide essential protection for wires, hoses, and cables passing through electrical panels and metal enclosures. The following picks cover a range of sizes, materials, and certifications to help you choose reliable, flame-retardant options for electrical installations. This guide focuses on common uses like EMT, IMC, and conduit fittings, plus snap-in knockout bushings that reduce abrasion and vibration.
| Product | Brand | Size / Quantity | Key Feature |
|---|---|---|---|
| EASYEAH 160 Pcs 6 Sizes Kit | EASYEAH | Multiple sizes; 160 pcs | UL approved nylon; snap-in, organized case |
| Pushglossy 50 Pcs 1/2 Inch | Pushglossy | 1/2 Inch; 50 pcs | cULus certified PVC; durable insulation |
| Pushglossy 50 Pcs 3/4 Inch | Pushglossy | 3/4 Inch; 50 pcs | cULus certified PVC; solid protection |
| ARLINGTON EMT75-100 | ARLINGTON | 3/4-Inch; 100-Pack | Insulating bushing for conduit protection |
| BOPOREAE 50 Pcs Black Snap | BOPOREAE | 3/8″; 50 pcs | Nylon 6/6; flame retardant; vibration relief |
EASYEAH 160 Pcs 6 Sizes Kit
The EASYEAH kit offers a broad assortment of snap-in knockout bushings in six sizes, packaged in a clear organizer case. This nylon-based kit uses UL approved materials (Nylon 6/6, 94V-2) that provide insulation, wear resistance, and corrosion resistance. The design features card tooths that lock into mounting holes, delivering firm board support and protection for cables, wires, and hoses. Suitable for many plates with thicknesses up to about 3.2 mm, the kit is intended for versatile electrical projects where rapid replacements or quick customization is needed.
Pushglossy 50 Pcs 1/2 Inch
Pushglossy’s 50-piece set provides cULus-certified plastic insulating bushings in a 1/2 inch size. The product emphasizes PVC as a durable insulating material with flame retardant properties up to 105 degrees Celsius. It is designed for use with rigid conduit, EMT, or IMC fittings, offering stable performance in damp or corrosive environments while aiming to improve safety and efficiency on job sites.
Pushglossy 50 Pcs 3/4 Inch
This 50-piece set from Pushglossy features a 3/4 inch plastic insulating bushing designed for EMT or IMC conduit systems. The PVC material is rated for flame retardancy up to 105 degrees Celsius and is described as durable, waterproof, and corrosion-resistant. It aims to provide robust protection across diverse electrical installations while maintaining compatibility with standard rigid conduits.
ARLINGTON EMT75-100
ARLINGTON offers a 3/4-inch insulating conduit bushing in a 100-pack, designed to protect wires from damage caused by tubing. This product emphasizes suitability for metal tubing and provides a straightforward solution for ensuring insulation and strain relief at conduit terminations. Durability and ease of installation are highlighted features for electricians working on larger conduit runs.
BOPOREAE 50 Pcs Black Snap
BOPOREAE provides 50 black snap-in knockout bushings with a 3/8 inch mounting diameter. The nylon 6/6 material is UL certified (94V-2) and flame retardant, offering good insulation and protection. The product’s dimensions support a 0.43–0.47 inch hole diameter, and its design prioritizes vibration absorption and cable protection against abrasion in tight electrical assemblies.
Pushglossy 50 Pcs 1 Inch
The Pushglossy 1-inch variant is a 50-piece set with cULus certification and durable PVC construction. It emphasizes waterproofing and corrosion resistance for rigid, EMT, or IMC conduit applications, delivering solid protection and improved work efficiency for larger-size conduits and wiring runs.
Buying Guide: Key Purchase Considerations
When selecting plastic bushings and grommets for electrical work, consider material, certification, size range, and installation method. UL and cULus certifications indicate adherence to safety standards and reliable flame retardant properties for electrical insulation. Nylon 6/6 and PVC are common materials; nylon offers strong mechanical protection, while PVC provides cost-effective insulation with good moisture resistance. Snap-in designs simplify installation and reduce the risk of loosening over time. For conduit applications, ensure the size and hole diameter match your mounting hardware and the cables or wires you intend to pass through.
Other considerations include: compatibility with EMT, IMC, and rigid conduit systems; the enclosure or panel material thickness; exposure to heat, humidity, or corrosive environments; and the need for vibration damping to protect sensitive wires. A diverse kit with multiple sizes is beneficial for varied projects, while individual larger-size bushings are useful for high-capacity runs.
Performance expectations differ by use case: high-density wiring in control panels may require flame-retardant, UL-listed nylon bushings, whereas outdoor or damp locations may favor PVC with waterproof or corrosion-resistant properties. Durability, ease of installation, and long-term reliability should guide your choice alongside price and availability.