This procurement is for a one-year Indefinite Delivery Contract for back-up rings, with a total contract value not to exceed $350,000. The guaranteed minimum order quantity is 3, with an estimated 8 orders per year. Delivery of items is required within 105 days after receipt of order, with shipments going to various DLA depots within and outside the continental United States. Quotes must be submitted electronically, and the solicitation is only available online.