Square braided PTFE packing insure a tight seal with a minimum of packing gland pressure. Extra rings of packing and a smooth uniform chamber assure a tight seal.

• 方形编制聚四氟乙烯填料确保在最小填料函压力下实现紧密的密封效果。填料的附加密封环和光滑一致的腔室也确保了密封的紧密性。