Description
Product Overview
The 200 PCS Rubber Grommet Firewall Hole Plug Assortment from BUSY-CORNER is engineered to meet the demanding needs of industrial technicians, electricians, plumbers, and automotive mechanics. Constructed from premium-grade black rubber, each gromlet delivers exceptional resistance to high temperatures, ultraviolet light, ozone, and flame, ensuring a long service life even in harsh environments. The kit includes a meticulously organized selection of sizes: 40 pieces of 1/4 inch (6.4 mm), 40 pieces of 5/16 inch (7.9 mm), 40 pieces of 3/8 inch (9.5 mm), 30 pieces of 7/16 inch (11.1 mm), 25 pieces of 1/2 inch (12.7 mm), 10 pieces of 5/8 inch (15.9 mm), and additional pieces for 3/4, 7/8, and 1 inch diameters. Each component is housed in a sturdy, transparent plastic case featuring nine distinct grids, allowing users to locate the exact size they need within seconds. The compact packaging not only protects the grommets from dust and deformation but also simplifies inventory management for workshops and field crews.
![[Product front view showing all components]](https://www.memorahub.store/wp-content/uploads/2026/08/a12f33b7e865463cbd4e0e4060a0359b.jpg)
Usage
These rubber grommets are versatile solutions for a wide range of applications. In electrical installations, they serve as reliable seals for conduit entries, protecting cables from abrasion and moisture while maintaining electrical insulation. In plumbing, the grommets act as protective sleeves for pipe penetrations, preventing leaks and corrosion at junction points. Automotive technicians rely on the kit to secure wiring harnesses, protect sensor cables, and seal firewall openings, thereby reducing vibration‑induced wear. The high‑temperature resistance makes the grommets suitable for use near engines, exhaust systems, and industrial heating equipment, where conventional plastic plugs would quickly degrade. Additionally, the UV‑resistant formulation ensures that outdoor installations, such as irrigation systems or outdoor lighting fixtures, retain their integrity over prolonged sun exposure. Whether you are assembling a new machine, retrofitting an existing system, or performing routine maintenance, the assortment provides the exact size you need without the need to order multiple single‑size kits.
Why Choose Us
Choosing the BUSY-CORNER grommet kit means investing in quality, reliability, and convenience. The rubber compound is formulated with a blend of synthetic elastomers that deliver superior tensile strength and elasticity, reducing the risk of cracking under repeated compression. Each grommet undergoes rigorous testing for temperature tolerance up to 200 °C, ensuring performance in high‑heat environments. The kit’s comprehensive size range eliminates the guesswork often associated with ordering individual grommets, saving both time and money. Our transparent case design not only protects the components but also provides a visual inventory system that streamlines workflow on busy job sites. Moreover, BUSY-CORNER stands behind its products with responsive customer service; any questions about fit, material compatibility, or bulk ordering are addressed promptly by a dedicated support team. This commitment to after‑sales assistance reinforces the confidence that professionals place in our brand, making the kit a trusted staple in toolboxes worldwide.
Key Features
- Durable rubber construction resists heat, UV, ozone and flame for long‑term reliability.
- Comprehensive size assortment from 1/4″ to 1″ eliminates the need for multiple purchases.
- Clear, nine‑grid case keeps each size separated for quick identification and easy access.
- Versatile applications across electrical, plumbing, automotive and industrial settings.
- Responsive customer support ensures assistance with product selection and post‑purchase needs.
FAQ
What material are the grommets made from and are they suitable for high‑temperature environments?
The grommets are crafted from a high‑quality rubber blend that offers excellent resistance to temperatures up to 200 °C. This makes them ideal for use near engines, heating elements, and other hot‑spot applications where standard plastic plugs would fail.
Can these grommets be used outdoors, and how do they handle UV exposure?
Yes, the rubber formulation includes UV‑stabilizers that protect the material from sun‑induced degradation. When installed in outdoor settings such as irrigation systems or exterior lighting fixtures, the grommets maintain their flexibility and sealing performance over extended periods of exposure.
How many pieces of each size are included in the kit, and is the quantity sufficient for professional projects?
The kit contains 200 pieces in total, distributed as follows: 40 pieces of 1/4 inch, 40 pieces of 5/16 inch, 40 pieces of 3/8 inch, 30 pieces of 7/16 inch, 25 pieces of 1/2 inch, 10 pieces of 5/8 inch, and additional pieces for 3/4, 7/8, and 1 inch sizes. This quantity is designed to support medium‑to‑large scale projects without the need for frequent reordering.
Is the packaging designed for easy transport and storage on job sites?
Absolutely. The grommets are stored in a durable, transparent plastic case with nine separate compartments. The case is compact enough to fit into standard toolboxes, yet robust enough to protect the components from impact, dust, and moisture during transport.
What should I do if I receive a damaged or missing component from the kit?
BUSY-CORNER provides a straightforward warranty process. If any grommet arrives damaged or a size is missing, contact our customer service team with the order details and a photo of the issue. We will arrange a replacement shipment promptly, ensuring minimal disruption to your workflow.




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