Flaretite’s seals make 37° and 45° flared fittings permanently leak-free and allow for serviceability. Clip them onto the nose of the flare or insert in the nut, assemble and torque. Seals are rated for – 65° F to + 1200° and are compatible with all refrigeration gases, hydraulic fluids, fuels, hot oil and steam. They fit all brands of flared fittings.  .