37° JIC adapter fittings have a 37° cone seat on the female adapter and a 37° flare on the male adapter. This cone seat and flare allows for a complete mechanical seal between the male and female fitting. Teflon tape or pipe thread sealant is not required. JIC fittings are an excellent choice for preventing leaks and can be used for higher pressure applications. These JIC fittings are equivalent to JIC fittings from Parker, Eaton, Aeroquip, Weatherhead, and Gates Hydraulics.