* Designed for use on difficult service conditions associated with stainless steel, aluminum & brass threaded connections. * Nickel base helps prevent seizing and galling. * ULŪ Listed thread sealant 561R. * Meets Mil Spec MIL-T-27730A. * NOT for oxygen. Availability: Usually ships the next business day. SAXXSize: 1/2 x 2603/4 x 260 (+$2.00)1 x 520 (+$11.00)1 x 260 (+$3.00)