Fulfillment
At McMasters Koss, we take pride in keeping your production running smoothly. With over 100 million seals in stock—including AS568 O-rings in Nitrile, Silicone, EPDM, and Fluorocarbon—we’re ready to meet your needs with Just-In-Time delivery you can count on. For more than 40 years, we’ve supported automotive OEMs and commercial customers by understanding the urgency of every shipment and the importance of getting parts where they need to be, when they’re needed most. Whether you’re working with blanket orders, online scheduling, or last-minute changes, our team is here to make it easy. With fulfillment from our Royal Oak, MI facility and global shipping support, we’re ready to get your parts delivered—efficiently, reliably, and with care. Let us know how we can help.
Commercial Stock for Immediate Shipment
At McMasters Koss, we keep a wide range of sealing solutions on hand so you don’t have to wait. We stock most AS568 size O-rings in Nitrile (Buna-N), Silicone, EPDM (EPR), and Fluorocarbon (Viton) for fast commercial shipment. You’ll also find a strong inventory of commonly used metric O-rings, as well as AS568 and metric Quad Rings and U Cups—ready to ship or available quickly when you need them. If you have a specific sealing need, our sales engineering team is here to help you find the right part and get it to you as quickly as possible.
JIT Delivery System
At McMasters Koss, we’re committed to making Just-In-Time (JIT) delivery simple and stress-free. We keep about three months of stock on hand, with more in transit—and your next release already in production—so you’re always covered. With over 40 years of experience meeting the demanding delivery needs of automotive OEMs, we’re ready to support your operations across North America and around the world.
We offer flexible shipping through your preferred carrier or ours, with options for economical ground or expedited delivery based on your timeline. Our sales engineering team is here to help with box sizing, shipping instructions, and barcode labeling that fits your system. Most orders qualify for same-day shipping, and we’re happy to monitor your schedule through ASN, or respond to last-minute changes via phone or email—whatever works best for your workflow.
For added peace of mind, we also offer Kanban stocking right at your facility, with replenishment available by email, online, or through regular on-site visits. If you’re facing a delivery challenge, just reach out—we’re here to help you find the right solution.