O-Ring OA KIT Boss contains a total of 212 O-Rings featuring the most popular 90 Durometer Boss O-Rings in 20 of the most commonly used fitting sizes. Perfect for boss tube fittings, hydraulic connections, pumps, valves, cylinders, and pneumatic/hydraulic motors, these O-Rings ensure reliable sealing for a wide range of demanding applications.

The set comes packed in a durable storage case that keeps every size organized, easy to access, and ready to carry anywhere your work takes you.