Check the listing for details. QR-4009 Quad Rings Pack of 6. Condition: New – Open box. Listed at 7.00 USD. The QR-4009 Quad Rings Pack of 6 is a set of high-quality seals designed for heavy equipment. These quad rings are specifically engineered to provide reliable sealing performance in various industrial applications. With a pack of 6, this product ensures that you have spare seals on hand for any emergencies or maintenance needs that may arise. Ideal for businesses and industrial settings, this pack of quad rings is a crucial component in ensuring the smooth operation of heavy equipment.