The O-Ring 1/4 x 3/8 from Double HH Manufacturing is essential for creating airtight seals in various applications. This pack includes 100 pieces, ensuring you have a sufficient supply for repairs and maintenance. Made from high-quality rubber, these O-rings are resistant to wear and tear, making them suitable for use in hydraulic systems, plumbing, and automotive applications. With a diameter of 1/4 inch and a thickness of 3/8 inch, they provide a reliable seal that prevents leaks and maintains pressure. Trust these O-rings for your sealing needs.