Bushings, Grommets, HEYCaps & Plugs

Protect your installations with our precision-crafted bushings, grommets, caps, and plugs, designed to safeguard critical components in diverse applications. From abrasion-resistant cable protection and liquid-tight sealing to specialized finishing plugs and transparent polycarbonate windows, each solution offers superior defense against environmental challenges while maintaining aesthetic quality.

Tubing Caps and Plugs

Heyco® Plugs for Rectangular Tubing – PZT Series

PZT Series – Ribbed Fit

Heyco® Ergonomic Plugs for Square Tubing – PSTE Series

PSTE Series – Vinyl for Greater Flexibility

Heyco® Plugs for Square Tubing – PSTR Series

PSTR Series – Ribbed Fit

Heyco® Plugs for Square Tubing – PST Series

PST Series – Clearance Fit

Heyco® Plugs for Round Tubing – PRT Series

PRT Series Plugs – Ribbed Fit

HEYCaps™ for Round Tubing – CRT Series

CRT Series Caps – Clearance Fit

Custom Colors

Heyco® Stock and Custom* Colors for Dome Plugs and Shorty Plugs

*CUSTOM color parts MUST be color matched. For accurate matching, consult Heyco for sample molded nylon color chips. Complete Dome Plugs...

Terminal Bushings

HEYConnect™ Terminal Bushings

Bushings

Heyco® Bushing Selector Tool

Heyco® Open/Closed Bushings

Mounting Hole Diameter Range: .375″ (9,5 mm) to 2.500″ (63,5 mm) Small Packs Available

Heyco® Open/Closed Universal Bushings

Mounting Hole Diameter Range: .187″ (4,7 mm) to 2.000″ (50,8 mm)

Heyco® UL Recognized Thermoplastic Rubber Grommets

Mounting Hole Diameter Range: .375″ (9,5 mm) to 2.000″ (50,8 mm)

Heyco® Open/Closed Shorty Bushings

Single Locking Step for Panel Thickness up to .062″ (1,6 mm) Mounting Hole Diameter Range: 7,0 mm (.276″) to 27,0 mm...

Heyco® Thick Panel Universal Bushings

Multiple Locking Steps for Panel Thickness up to .250″ (6,4 mm) Mounting Hole Diameter Range: .500″ (12,7 mm) to 1.500″ (38,1...

Heyco® Shorty Universal Bushings

Simple Locking Step for Panel Thickness up to .062″ (1,6 mm) Mounting Hole Diameter Range: .500″ (12,7 mm) to 1.093″ (27,8...

Heyco® Thin Panel Bushings

Multiple Locking Steps for Panels as Thin as .020″ (0,5 mm) Mounting Hole Diameter Range: .218″ (5,5 mm) to .875″ (22,2...

Heyco® Thick Panel Snap Bushings

Mounting Hole Diameter Range: .375″ (9,5 mm) to 2.0″ (50,8 mm)

Heyco® Knock-Out Snap Bushings

Heyco® Pry Out Bushings

Mounting Hole Diameter Range: .375″ (9,5 mm) to 1.375″ (34,9 mm)

Heyco® Snap-In Smooth Bore Bushings

Mounting Hole Diameter Range: .500″ (12,7 mm) to 1.093″ (27,8 mm)

Heyco® Threaded Smooth Bore Bushings

Heyco® Armor Bushings

Heyco® Universal Bushings

Mounting Hole Diameter Range: .500″ (12,7 mm) to 3.000″ (76,2 mm)

Heyco® Sealing Washers

Heyco® Snub Bushings

Multiple Locking Steps for Panel Thickness up to .125″ (3,2 mm) Mounting Hole Diameter Range: .375″ (9,5 mm) to .875″ (22,2 mm)

Heyco® Shorty Bushings

Single Locking Step for Panel Thickness up to .062″ (1,6 mm) Mounting Hole Diameter Range: .187″ (4,7 mm) to 1.093″ (27,8 mm)

Heyco® Thin Panel versus Shorty Bushings

Heyco® Metric Snap Bushings

Multiple Locking Steps for Panel Thickness up to 2,5 mm (.098˝) Mounting Hole Diameter Range: 16,0 mm (.630˝) to 34,2 mm...

Heyco® Snap Bushings 3.000″ (76,2 mm) to 6.0″ (152,4 mm) Diameter Parts

Larger 3.000″ (76,2 mm) to 6.000″ (152,4 mm) Diameter Parts Small Packs Available

Heyco® Snap Bushings 1.000″ (25,4 mm) to 6.0″ (152,4 mm) Mounting Hole Diameter

Mounting Hole Diameter Range: 1.000″ (25,4 mm) to 2.500″ (63,5 mm)

Heyco® Snap Bushings .250″ (6,4 mm) to .875″ (22,2 mm) Mounting Hole Diameter

Mounting Hole Diameter Range: .250″ (6,4 mm) to .875″ (22,2 mm)

Liquid Tight Bushings

Heyco® EPDM Snap-in Liquid Tight Bushings

Mounting Hole Diameter Range: .492″ (12,5 mm) to 1.988″ (50,2 mm)

HEYCo-molded™ Liquid Tight Break-Thru Plugs

Mounting Hole Diameter Range: .500″ (12,7 mm) to 1.500″ (38,1 mm) Small Packs Available

Heyco® Liquid Tight Strain Relief Bushings

The Ultimate in Snap-In Strain Relief Protection Snap-in, Low Profile Design allows for Pre-assembled Cables

Grommets

Heyco® Grommet Selector Tool

Heyco® UL Listed Thermoplastic Rubber Grommets

For Panel Thickness from .03˝ (0,8 mm) to .08˝ (2,0 mm) Mounting Hole Diameter Range: .500˝ (12,7 mm) to 1.250˝ (31,8...

Heyco® Thick Panel Rubber Grommets

For Panels: .250″ (6,4 mm) to .375″ (9,5 mm) Thick

Heyco® Rubber Grommets .125″ (3,2 mm) to .188″ (4,8 mm) Panel Thickness

For Panels .125″ (3,2 mm) to .188″ (4,8 mm) Thick

Heyco® Rubber Grommets .063″ (1,6 mm) to .125″ (3,2 mm) Panel Thickness

For Panels: .063″ (1,6 mm) to .125″ (3,2 mm) Thick

Heyco® Rubber Grommets For Panels up to .063″ (1,6 mm) Thick

For Panels: .063″ (1,6 mm) Thick

Heyco® UL Recognized Thermoplastic Rubber Grommets

Mounting Hole Diameter Range: .375″ (9,5 mm) to 2.000″ (50,8 mm)

Grommet Rolls and Channels

Heyco® Grommet Channels – “DS” Channels

Heyco® Continuous Grommet Rolls – Nylon

Nylon 100′ (30.5M) Roll

Heyco® Continuous Grommet Rolls – Polyethylene

Polyethylene 100′ (30.5M) Roll

Finishing Plugs

Heyco® Hole Plug Selector Tool

Heyco® Rectangular Blanking & Connector Port Plugs

Multiple Locking Steps for Various Panel Thicknesses

Heyco® Double D Hole Plugs

For Mounting Holes with Flats Multiple Locking Steps for Panel Thickness up to .125″ (3,2 mm)

Heyco® Snap-In Metric Dome Plugs

Multiple Locking Steps for Panel Thickness up to 4,1 mm (.162″) Mounting Hole Diameter Range: 13,0 mm (.512″) to 34,2 mm...

Heyco® Extra Dome Plugs

Multiple Locking Steps for Panel Thickness up to .250″ (6,4 mm)

Heyco® Halogen and Phosphorus-Free 94V-0 Hole Plugs

Heat Stabilized • Self Extinguishing • Nontoxic • UV Resistant Mounting Hole Diameter Range: .187″ (4,7 mm) to 2.000″ (50,8 mm)

Heyco® Thin Panel versus Shorty Plugs

Heyco® Thin Panel Dome Plugs

Multiple Locking Steps for Panels as Thin as .020″ (0,5 mm) Mounting Hole Diameter Range: .218″ (5,5 mm) to .875″ (22,2...

Heyco® Insulation Plug

No Maximum Panel Thickness

Heyco® Metric Ergonomic Plugs

For Panel Thickness from 0,8 mm (.03″ ) to 2,0 mm (.08″ ) Mounting Hole Diameter Range: 14,5 mm (.57″) to 34,0 mm...

Heyco® Pry Out Plugs – Prong Finger Design

Mounting Hole Diameter Range: .187″ (4,7 mm) to .375″ (9,5 mm)

Heyco® Pry Out Plugs – Standard Finger Design

Mounting Hole Diameter Range: .250″ (6,4 mm) to 2.500″ (63,5 mm)

Heyco® Glossy and Thick Panel Glossy Plugs

Mounting Hole Diameter Range: .187″ (4,7 mm) to 2.000″ (50,8 mm)

Heyco® Shorty Plugs

Single Locking Step for Panel Thickness up to: .062″ (1,6 mm) Mounting Hole Diameter Range: .187″ (4,7 mm) to 1.093″ (27,8...

Heyco® Thick Panel Dome Plugs

Mounting Hole Diameter Range: .375″ (9,5 mm) to 2.000″ (50,8 mm)

Heyco® Large Dome Plugs

Mounting Hole Diameter Range: 3.000″ (76,2 mm) to 6.000″ (152,4 mm) Small Packs Available

Heyco® Dome Plugs

Mounting Hole Diameter Range: .187″ (4,7 mm) to 2.500″ (63,5 mm)

Window Plugs

Heyco® Window “View Port” Plugs

Mounting Hole Diameter Range: .187″ (4,7 mm) to 2.000″ (50,8 mm)

Heyco® Oval Window “View Port” Plug

Multiple Locking Steps for Panel Thickness up to .125″ (3,2 mm)

Heyco® Shorty Window “View Port” Plugs

Single Locking Step for Panel Thickness up to .062″ (1,6 mm) Mounting Hole Diameter Range: .510″ (13,0 mm) to 1.010″ (25,7 mm)

Heyco® Diffuser Plugs

Knock-out Seals

Heyco® V-0 Knock-Out Seals

Multiple Locking Steps for Panel Thickness up to .125″ (3,2 mm) Mounting Hole Diameter Range: 1/2″ to 1-1/2″ Electrical Knock-outs (.875″...

Heyco® Knock-Out Seals and Thick Panel Knock-Out Seals

Mounting Hole Diameter Range: 1/2″ to 2″ Electrical Knock-Outs (.875″ to 2.500″ nominal)

Liquid Tight Plugs

HEYCo-molded™ Liquid Tight Break-Thru Plugs

Mounting Hole Diameter Range: .500″ (12,7 mm) to 1.500″ (38,1 mm) Small Packs Available

No O-ring Required! Heyco® Nylon Liquid Tight Threaded Plugs

Liquid Tight, with Integral Sealing Ring Hex Head with Slot

Heyco® V-0 Liquid Tight Hole Plugs – Low 75 Durometer

Maximum Panel Thickness .125″ (3,2 mm) Mounting Hole Diameter Range: .875″ (22,2 mm) to 1.375″ (34,9 mm)

Heyco® V-0 Liquid Tight Hole Plugs – Standard 85 Durometer

Maximum Panel Thickness .125″ (3,2 mm) Mounting Hole Diameter Range: .500″ (12,7 mm) to 1.375″ (34,9 mm)

Electronic Caps and Plugs

Heyco® Connector Caps and Plugs

Heyco® IEC-14 Plug

For IEC-13 Female Connectors

Heyco® Nylon D-Subminiature Mounting Hole Plugs

Clearance Fit for Panel Thickness up to .170″ (4,3 mm)

HEYCap™ Electro Miniature Protection Caps

HEYCap™ D-Subminiature Protection Caps

Threaded Plugs

Heyco® Push-In Threaded Plugs

For SAE and NPT Threaded Ports

Heyco® TEMPlugs™ for NPT Threaded Ports

Heyco® Plugs for Threaded Ports – ISO

Heyco® Plugs for Threaded Ports – SAE

Heyco® Plugs for Threaded Ports – NPS

Heyco® Plugs for Threaded Ports – NPT

Heyco® PG and Metric Threaded PlugsNickel-Plated Brass

Round Head with Slot Nickel-Plated Brass

Heyco® PG and Metric Threaded Plugs Plastic

Round Head with Slot Plastic

Tapered Caps and Plugs

HEYCap™ Tapered Caps and Plugs – SAE

For SAE Fitting Hubs and Threaded Mounting Holes

HEYCap™ Tapered Caps and Plugs – NPT

For NPT Fitting Hubs and Threaded Mounting Holes

Sheet Metal Plugs

Heyco® Sheet Metal Plugs – Flush Head

For Panel Thicknesses from .02˝ (0,5 mm) to .11˝ (2,8 mm) Mounting Hole Diameter Range: .18˝ (4,6 mm) to 3.00˝ (76,2...

Heyco® LDPE Sheet Metal Plugs – Recessed Head

For Panel Thicknesses from .02˝ (0,5 mm) to .18˝ (4,6 mm) Mounting Hole Diameter Range: .18˝ (4,6 mm) to 3.00˝ (76,2...

Heyco® Metric Ergonomic Plugs

For Panel Thickness from 0,8 mm (.03″ ) to 2,0 mm (.08″ ) Mounting Hole Diameter Range: 14,5 mm (.57″) to 34,0 mm...

Accessories

Heyco® Core Products Kit

Heyco® Bushings LabKit #2

Heyco® Grommets LabKit #7

Heyco® Hole Plugs LabKit #3

Resources

Heyco® Hole Plug Selector Tool

Heyco® Bushing Selector Tool

Heyco® Grommet Selector Tool

Heyco® HVAC/R & White Goods Solutions LabKit #4

Heyco® Product Line Guide

Heyco® Catalog 117

Sheet Metal Gauge to Thickness Conversion Chart

Cross Reference from the LTB’s and KOS-LT’s to HEYCo-molded™ Liquid Tight Break-Thru Plugs (LTBP’s)

Liquid Tight Break-Thru Plugs

Heyco® Liquid Tight Threaded Plugs Torque Chart

Heyco® Engineered Components Solutions for the Lighting Industry

Heyco® Engineered Component Solutions for the HVAC and Refrigeration Industries

Heyco® HEYCaps, Nylon Finishing Plugs and Venting Solutions Brochure

News & Resources

Featured Content

Low Profile Cordgrips

Tite “Maximized” Liquid Tight Cordgrips

Tite “Maximized” Liquid Tight Cordgrips

Tite Tear-Away Liquid Tight Cordgrips

Tite Tear-Away Liquid Tight Cordgrips

Quarter-Turn Mount Wire Clips #5

Quarter-Turn Mount Wire Clips #5

Heyco® Quarter-Turn Mount 3 Wire Clips

Heyco® Quarter-Turn Mount 3 Wire Clips

Heyco® Helios® Edge Clip

Heyco® Helios® Edge Clip

Why Heyco

Product Lines

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