F-3355系列旋转式T恤有带刺的发球是可以旋转360度。有第一倒钩无分型线。它是1 / 4-18 NPT旋转接头,使在螺纹基部倒钩的转动的创新设计。T.he threads themselves are sealed using either Teflon Tape or EverSeal 483. It is possible to buy barbs with 1/16", 3/32", or 1/8" I.D. flexible tubing. It is a snap-type fitting, which is then sealing using Buna-N, Ethylene Propylene (EPDM), or Viton o'ring. The mounting on the 1/4-18 NPT Swivel Fitting are precision molded on nylon. The maximum supply pressure is 125 psi. Pperating temperature range is -50 degrees to 180 degrees F. The housing and barb is made of nylon, while the O-ring is made of Buna-N, Ethylene Propylene, or Viton.