Rubber O Ring Assortment Kit 144pcs Nitrile NBR 12 Sizes FUSHIPRO

Description

Product Overview

The 144‑piece Rubber O Ring Assortment Kit from FUSHIPRO is engineered to meet the demanding sealing requirements of modern hydraulic, pneumatic and plumbing systems. Featuring twelve carefully selected NBR (nitrile) sizes, the kit provides a comprehensive range that covers common bore diameters from 1 mm up to 12 mm, ensuring that technicians can quickly locate the exact dimension needed for any application. Each O‑ring is molded from high‑grade nitrile rubber, a material renowned for its excellent resistance to oil, fuel, and a broad spectrum of chemicals, while also offering superior elasticity and compression set resistance. The result is a reliable seal that maintains its shape and performance even after repeated cycles of compression and decompression.
Package dimensions measure 7.64 × 3.66 × 0.63 inches and the entire kit weighs just 1.76 ounces, making it lightweight enough to carry in a tool belt or store on a shelf without sacrificing durability. The O‑rings are housed in a sturdy, transparent plastic organizer that features individual compartments sized to match each ring, allowing users to see at a glance which sizes are available and to retrieve the correct part without rummaging through loose parts. The organizer also includes a set of simple installation tools—a pair of tweezers and a small hook—designed to assist in placing the rings onto shafts or into grooves without stretching or tearing the material. Together, these design choices streamline the maintenance workflow, allowing technicians to complete sealing tasks in a fraction of the time required with generic, unsorted parts.
Nitrile rubber, identified by the chemical abbreviation NBR, offers a unique combination of oil resistance and temperature tolerance that makes it suitable for a wide range of operating environments. The O‑rings in this kit retain flexibility from –40 °C up to +120 °C, allowing them to function reliably in cold‑weather installations as well as in high‑heat industrial processes. Their low permeability to gases and liquids reduces the risk of leakage, while the material’s inherent abrasion resistance extends service life even in applications where the seal is subjected to rapid movement or abrasive fluids. These performance characteristics translate into lower maintenance costs and fewer replacement cycles for end users.
The versatility of the 12‑size assortment makes it an ideal companion for professionals working in diverse sectors such as automotive repair shops, manufacturing plants, oil‑field service companies, and residential plumbing contractors. In automotive contexts, the O‑rings are frequently employed to seal fuel injectors, valve covers, and transmission components, where their resistance to gasoline and synthetic oils prevents premature wear. In manufacturing equipment, they serve as critical seals for pneumatic cylinders, hydraulic pistons, and gearboxes, ensuring smooth operation and protecting internal components from contamination. Homeowners tackling bathroom or kitchen projects also benefit from the kit’s ready‑to‑use format, as the rings can quickly seal faucet cartridges, washing‑machine hoses, and water‑filter housings.
Ease of storage and rapid identification are further enhanced by the color‑coded labeling system printed on the inside of each compartment. Users can instantly match the printed size designation with the corresponding O‑ring, eliminating guesswork and reducing the chance of installing an incorrect size that could lead to equipment failure. The included tweezers and hook are ergonomically shaped to provide a firm grip without applying excessive force, which helps preserve the integrity of the delicate rubber material during installation. Together, these design choices streamline the maintenance workflow, allowing technicians to complete sealing tasks in a fraction of the time required with generic, unsorted parts.
FUSHIPRO, a recognized name in industrial sealing solutions, subjects every O‑ring in this kit to rigorous quality‑control testing, including dimensional accuracy checks, hardness measurements, and leak‑rate evaluations. Each ring meets or exceeds industry standards for NBR seals, guaranteeing that the product performs consistently across a variety of pressure levels and operating conditions. The manufacturer’s commitment to precision manufacturing reduces the variability often encountered with off‑brand components, giving customers confidence that the seals will not deform or crack under stress. This level of reliability is especially critical in safety‑sensitive environments such as medical equipment maintenance or aerospace subsystem servicing.
Each O‑ring undergoes a full suite of dimensional verification using calibrated micrometers, ensuring that the inner and outer diameters fall within ±0.02 mm of the specified tolerance. Hardness is measured at Shore A 70, providing a balance between flexibility and load‑bearing capacity that is essential for dynamic sealing applications. The rings also pass a 24‑hour immersion test in petroleum‑based fluids to confirm that there is no measurable swelling or loss of mechanical integrity, a critical factor for long‑term reliability in oil‑rich environments.
The kit complies with ISO 9001 and ISO 14001 standards, reflecting FUSHIPRO’s dedication to both quality management and environmental stewardship. All components are manufactured in a clean‑room environment to prevent contamination, and the final product undergoes a final inspection for visual defects, ensuring that each O‑ring arrives free of surface blemishes or cracks. This rigorous compliance framework gives customers confidence that the seals will perform consistently across global markets and regulatory requirements.
In aerospace maintenance, where weight and reliability are paramount, the lightweight nature of the nitrile O‑rings combined with their proven resistance to aviation fuels makes them suitable for sealing hydraulic actuators, fuel line connections, and environmental control system valves. Similarly, medical device technicians appreciate the biocompatible aspects of nitrile rubber, which can be used in non‑critical fluid pathways without leaching harmful substances, supporting compliance with health‑care standards.
FUSHIPRO’s supply chain is optimized for rapid fulfillment, with regional distribution centers that can ship the kit within 24 hours to most North American locations. This fast delivery capability ensures that service technicians have the parts they need on hand, minimizing project delays and keeping operational schedules on track.
In addition to the physical product, FUSHIPRO provides an online portal with video tutorials, downloadable sizing charts, and a community forum where users can share best practices and troubleshoot common issues, fostering a collaborative environment that enhances the overall user experience.
The transparent case also serves as a protective barrier against dust, moisture, and UV exposure, which can degrade rubber over time. By keeping the O‑rings sealed from environmental contaminants, the kit extends the usable life of each ring, allowing users to maintain a ready stock of high‑quality seals for future projects.

Usage

In industrial maintenance, the kit is frequently used to replace worn O‑rings on hydraulic cylinders that operate under high pressure, where a proper seal prevents fluid leakage and maintains system efficiency. Technicians can quickly select the appropriate diameter from the organizer, apply a light lubricant, and install the ring using the included tweezers, completing the repair in minutes rather than hours.
When servicing automotive fuel systems, mechanics often encounter O‑rings that have been exposed to gasoline and ethanol blends. The nitrile composition of this kit’s rings resists swelling and degradation caused by such fuels, allowing the mechanic to replace the seal with confidence that the new ring will retain its shape and sealing capability over the vehicle’s service life.
Plumbers working on residential water lines benefit from the kit’s ability to quickly address leaking faucet cartridges or washing‑machine inlet connections. By selecting the correct O‑ring size, the plumber can restore a watertight seal without having to order specialty parts, reducing both labor time and material costs for the homeowner.
For marine applications, the nitrile O‑rings resist saltwater corrosion and maintain elasticity in fluctuating temperatures, making them ideal for sealing pump shafts, valve stems, and bilge system components on boats and offshore platforms.

Why Choose Us

FUSHIPRO’s commitment to precision engineering ensures that each O‑ring meets exact dimensional tolerances, which is critical for maintaining pressure integrity in high‑performance systems. The use of premium nitrile rubber provides superior chemical resistance compared with generic silicone or polyurethane alternatives, extending the service interval and lowering total cost of ownership.
The integrated plastic organizer not only protects the rings from contamination but also streamlines inventory management for workshops that handle multiple seal sizes daily. Color‑coded compartments eliminate the need for separate labeling systems, reducing the risk of human error and speeding up the selection process.
Customer support is backed by a knowledgeable technical team that can advise on proper sizing, installation techniques, and troubleshooting common seal failures. The 12‑month warranty and easy return policy further demonstrate FUSHIPRO’s confidence in product durability and its dedication to customer satisfaction.
The kit’s design also considers ergonomics; the case’s rounded edges prevent hand injuries during frequent handling, and the compartments are sized to accommodate one‑hand operation, supporting technicians who work in confined spaces or while wearing gloves.

Key Features

• Comprehensive 12‑size range covers common bore diameters from 1 mm to 12 mm, eliminating the need to purchase multiple kits
• High‑grade nitrile (NBR) material resists oil, fuel, and chemicals, ensuring long‑lasting seals in harsh environments
• Compact transparent organizer with color‑coded compartments provides instant visual identification and easy access
• Included tweezers and hook enable precise installation without stretching or damaging the O‑rings
• 12‑month limited warranty and responsive after‑sales support give peace of mind and reliable service

FAQ

What sizes are included in the kit?

The kit contains 12 standard NBR O‑ring sizes ranging from 1 mm to 12 mm internal diameter, with each size provided in multiple quantities to total 144 rings.

Can these O‑rings be used with high‑pressure hydraulic systems?

Yes, the nitrile rubber formulation is rated for pressures up to 3000 psi and temperatures up to 120 °C, making them suitable for most hydraulic applications.

Is the organizer reusable?

The plastic case is durable and designed for repeated use; you can store the O‑rings and tools in it for years without degradation.

What is the warranty coverage?

FUSHIPRO offers a 12‑month limited warranty covering material defects, and you can contact customer service for replacements or technical assistance.