This is brand new, never used or installed, 30 pack of genuine Swagelok NI-4-VCR-2-ZCT-VS Nickel Side Load Retainer Gaskets with tray. If there are any problems with this unit, please don't hesitate to send us a message so we can remedy the situation with a return/refund. We want to provide our customers with the best service and parts. We buy our inventory from local precision manufacturers within the semiconductor community to ensure quality and OEM performance standards. For custom quantities, please send us a message inquiry and we can get you a quote. If there are any issues with your order, please reach out and we will be glad to help.