Military Standard O-Ring Seal – MS28778-6
Military Standard O-Ring Seal – MS28778-6
● Out of stock
✈ FREE U.S. shipping on orders over $350
The MS28778-6 O-Ring is a military standard product designed for use in a variety of applications. It is made from a durable rubber material and is designed to provide a reliable seal in extreme conditions. The O-Ring is designed to meet the stringent requirements of the military and is tested to ensure it meets the highest standards of quality and performance.
The MS28778-6 O-Ring is available in a variety of sizes and is designed to fit a wide range of applications. It is easy to install and provides a reliable seal in even the most extreme conditions. The O-Ring is designed to provide a long-lasting, reliable seal and is backed by a manufacturer's warranty.
Shipping & Delivery
FREE U.S. shipping on orders over $350.
Ships directly from our authorized U.S. aviation supplier's warehouse.
- Typically processed within 1–3 business days
- Tracking emailed as soon as your order ships
- Multiple items may arrive in separate packages — at no extra cost
Returns & Refunds
30-day returns · no restocking fee · free return label.
Request a return within 30 days of delivery and a prepaid return label is issued within 2 business days. Your refund is processed automatically once the supplier receives the return.
Is this product genuine?
Yes — every product on Skyfarer Shop ships from an authorized aviation supplier or the brand's official distribution network. No gray-market stock, no knock-offs: the same parts, gear, and materials you'd get at the airport shop, backed by the manufacturer's own warranty where one applies.
Not sure this is the right fit?
We're pilots — happy to sanity-check part numbers, compatibility, or compare options before you order. Send us a note and we'll get back to you within one business day. You can also browse Skyfarer to connect with flight schools and instructors.