1000 Series Swivel Seal Female Aluminum Hose End by RHP®. RHP swivel seal AN hose ends are cut from 6061 T6 Aluminum on RHP CNC machine turning centers providing superior thread strength and smooth assembly. RHP's custom designed Hose nipples enable a quick, easy and consistent hose end assembly. RHP double viton O-Ring seals provide leak free performance when used with a wide range of racing fuels and fluids. RHP's exclusive hand polishing, color consisten anodizing and unique pressure testing adds the final touch of quality and protection that professional engine builders have come to expect from Redhorse Performance AN Hose Ends.