NAS617-8 Part: #NAS617-8 by National Aviation Original price $2.95 - Original price $2.95 Original price $2.95 $2.95 - $2.95 Current price $2.95 | / - Availability: In stock Quantity: Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Description Description O-Ring, 0.644 in ID, 1/2 in OD, 0.078 in Thick, Acrylonitrile Butadiene Rubber Description O-Ring, 0.644 in ID, 1/2 in OD, 0.078 in Thick, Acrylonitrile Butadiene Rubber