3-1/2" Inside Diameter Rubber Grommet - 3/16" Groove Width - Fits 4" Holes

Electrical & Wiring Protection

• Prevents chafing and damage to cables in control panels and junction boxes.
• Insulates wires in high-voltage electrical enclosures.
• Protects power cords and data cables from wear in office setups.
• Organizes and secures wiring in entertainment centers and home theaters.
• Provides a weatherproof seal for outdoor lighting installations.

Automotive & Transportation

• Seals and protects wiring in engines, dashboards, and undercarriages.
• Reduces vibration in vehicle fuel lines and hydraulic hoses.
• Shields motorcycle and ATV cables from dirt, debris, and extreme conditions.
• Prevents leaks and wear in air brake and fuel system hoses.
• Used in electric vehicle (EV) wiring to ensure insulation and longevity.

Industrial & Manufacturing

• Dampens vibrations in heavy machinery and conveyor systems.
• Provides cable pass-through protection in factory automation equipment.
• Protects hoses and pipes from metal edge contact in manufacturing plants.
• Ensures a secure seal in pneumatic and hydraulic machinery.
• Prevents friction damage in robotic arms and moving mechanical parts.
• Provides a tight seal around wiring and hoses in generators, compressors, factory machines, and control panels.

Plumbing & HVAC

• Creates leak-proof seals in pipe and tubing connections.
• Use around PVC pipes
• Used in HVAC systems to protect wiring and refrigerant lines.
• Ensures secure insulation for pipes in water treatment plants.
• Prevents leaks in irrigation systems and agricultural piping.
• Seals ventilation ducts and air conditioning unit connections.

Marine & Aerospace

• Prevents water damage and corrosion in boat wiring and electrical systems.
• Provides insulation and sealing for aerospace and aviation electronics.
• Shields underwater cabling in submarines and marine research equipment.
• Ensures vibration resistance in aircraft wiring systems.
• Protects antennas and radar system wiring from extreme weather.
• Resistant to saltwater and harsh marine environments, grommets are used to protect electrical connections, fuel lines, and plumbing components on boats, yachts, and docks.

DIY, Home Improvement & Woodworking

• Creates smooth cable pass-throughs in wood panels and furniture.
• Protects wiring in entertainment centers, desks, and home theaters.
• Used in creative craft projects and home décor enhancements.
• Provides protection for electrical cords in outdoor holiday lighting.
• Used for cable management in wall-mounted TVs and workstations.
• Ideal for creating smooth, clean holes in handmade projects, models, and hobbyist creations.
• Used in woodworking for a professional finish in furniture, cabinets, desks, and enclosures.

Electronics & Appliances

• Protects delicate wiring in refrigerators, washing machines, and dishwashers.
• Ensures insulation in power supplies and circuit boards.
• Used in computer case cable management for a clean setup.
• Seals and protects wires in smart home automation devices.
• Prevents overheating in battery-powered gadgets by improving airflow.

Computer & Electronics

• Prevents cable damage in PC cases, gaming setups, and network wiring.
• Organizes and secures wiring in entertainment and office setups.
• Used in speaker systems and electrical appliances to minimize vibrations.
• Shields delicate wiring in external hard drives, gaming consoles, and home servers.
• Provides protection for cables in high-end audio and video equipment.

Medical & Laboratory Equipment

• Used in hospital devices to protect tubing and wires.
• Seals connections in medical imaging and diagnostic machines.
• Provides sanitary seals in food-grade laboratory equipment.
• Used in pharmaceutical processing machines for sterile wiring protection.
• Ensures durability in portable medical monitoring devices.

Renewable Energy & Outdoor Applications

• Protects electrical wiring in solar panel and wind turbine installations.
• Prevents moisture intrusion in outdoor power stations and generators.
• Shields underground cabling for sustainable energy projects.
• Seals battery compartments in solar-powered outdoor lights.
• Ensures long-lasting weatherproofing for electric car charging stations.

Security & Surveillance

• Protects wiring in outdoor security cameras and motion sensors.
• Seals alarm system wiring for tamper resistance.
• Ensures weatherproof insulation in emergency communication systems.
• Prevents chafing in automated gate and garage door systems.
• Secures cables in intercom and doorbell wiring.

Fitness & Sporting Equipment

• Protects wiring in gym machines and fitness equipment.
• Ensures durability in archery bows and high-impact sports gear.
• Seals electronic components in bicycles and e-scooters.
• Shields cabling in motorized treadmills and stationary bikes.
• Reduces friction in pulley-based exercise systems.

Robotics & Automation

• Manages cables in robotic arms and automated machinery.
• Ensures smooth motion in 3D printers and CNC machines.
• Provides pass-through insulation in industrial robotic systems.
• Prevents friction in motorized robotic assemblies.
• Protects electronic wiring in AI-driven smart factories.

Agricultural & Farming Equipment

• Shields electrical wiring, hydraulic hoses, and irrigation tubing in tractors, greenhouses, and farming machinery.
• Protects cables and tubing from exposure to dust, dirt, and impact damage.
• Used in automated farming equipment and greenhouse climate control systems.
• Seals hose connections in livestock watering systems to prevent leaks.

Beverage & Food Processing

• Provides sanitary seals in beverage dispensers, food production lines, and brewing equipment.
• Resistant to food-grade cleaning agents and temperature fluctuations.
• Ensures safe insulation for processing equipment in commercial kitchens.
• Used in bottling plants and dairy processing systems to prevent contamination.
• Seals electrical wiring in industrial ovens and food processing machinery.

Construction & Engineering

• Provides shock absorption and cable management in construction projects, tunnels, bridges, and infrastructure builds.
• Prevents wires and pipes from being cut or damaged during installation.
• Ensures secure sealing of electrical wiring in temporary and permanent structures.
• Used in prefabricated building components to ensure tight electrical fittings.
• Seals wiring in heavy construction equipment for long-term durability.

Retail & Display Fixtures

• Used in shelving units, product displays, and POS systems to manage cables neatly.
• Protects electronic connections and enhances the appearance of retail setups.
• Used in LED signage and digital advertising displays to organize wiring.
• Ensures a secure fit for electrical components in self-checkout systems.
• Protects wires in digital kiosks and interactive retail displays.

Home Improvement & Repairs

• Used in DIY electrical installations, plumbing fixes, and renovation projects.
• Helps secure wires, prevent leaks, and provide noise reduction in appliances and furniture.
• Adds protection for wiring in built-in kitchen appliances and smart home systems.
• Seals electrical connections in outdoor sheds, garages, and workshops.
• Provides vibration dampening for home appliances and power tools.

Laboratory & Scientific Applications

• Ensures secure sealing of tubing and wires in high-precision instruments.
• Used in vacuum systems and chemical processing equipment.
• Helps maintain a sterile environment where necessary.
• Seals connections in laboratory ventilation and fume extraction systems.
• Used in high-tech research equipment to reduce vibration interference.

• Measure and Cut the Hole: Accurately measure the diameter of the wire or cable and cut a hole slightly smaller in the panel or surface where the grommet will be placed.
• Prepare the Grommet: Ensure the rubber grommet is clean and free from any debris. If necessary, lightly lubricate with a silicone-based product for easier installation.
• Insert the Grommet: Gently press the grommet into the hole, starting from one side and working your way around. It should fit snugly without excessive force.
• Thread the Cable or Wire: Once the grommet is securely in place, thread the cable or wire through it. The grommet should provide a protective, snug fit around the cable.
• Final Check: Ensure the grommet is seated properly and provides a tight seal. Adjust if necessary to avoid any movement or chafing of the wires.

Usually Ships Within 24 Hours. All Orders Are Shipped With Tracking Numbers.