1、環密封圈越緊越好。瀝青 泵靜環密封圈基本處于靜止狀態，相對較緊密封效果會好些，但過緊也是有害的。
一是引起靜環密封因過熱變形，影響密封效果;二是靜環材質以石墨居多.一般較脆，過度受力極易引起碎裂;三是安裝、拆卸困難，極易損壞靜環。
2、新的比舊的好。相對而言瀝青泵使用新機械密封的效果好于舊的，但新機械密封的質量或材質選擇不當時，配合尺寸誤差較大會影響密封效果：在聚合性和滲透性介質中，靜環如無過度磨損，還是不更換為好。因為靜環在靜環座中長時間處于靜止狀態，使聚合物和雜質沉積為一體.起到了較好的密封作用。
3、靜拆修總比不拆好，瀝青泵一旦出現機械密封泄漏便急于拆修。其實，有時密封并沒有損壞，只需調整工況或適當調整密封就可消除泄漏。這樣既避免浪費又可以驗證自己的故障判斷能力，積累維修經驗提高檢修質量。
4、葉輪鎖母越緊越好。瀝青泵機械密封泄漏中，軸套與軸之間的泄漏(軸間泄漏)是比較常見的，一般認為，軸問泄漏就是葉輪鎖母沒鎖緊，其買導致軸間泄漏的因素較多、如軸間墊失效，偏移，軸問內有雜質，軸與軸套配合處有較大的形位誤差，接觸面破壞.軸上各部件間有間隙;軸頭螺紋過長等都會導致軸間泄漏。鎖母鎖緊過度只會導致軸間墊過早失效，相反適度鎖緊鎖母，使軸問墊始終保持一疋的壓縮彈性，在運轉中鎖母會自動適時鎖緊，使軸間始終處于良好的密封狀態。
5、動環密封圈越緊越好，其實動環密封圈過緊有害無益。一是加劇密封圈與軸套間的磨損泄漏;二是增大了動環軸向調整、移動的阻力、在工況變化頻繁時無法適時進行調整;三是彈簧過度疲勞易損壞：四是使動環密封圈變形、影響密封效果。
6、彈簧壓縮量越大密封效果越好。其買不然，彈簧壓縮量過大，可導致摩擦副急劇磨損，瞬間燒損;過度的壓縮使彈簧失去調節動環端面的能力，導致密封失效。

1, ring ring more compactly as possible. Asphalt pump static seal ring is basically in a static state, the relatively tight seal effect will be better, but too tight is harmful.
One is caused by static seal due to overheating, the impact of sealing effect; two static ring materials are mostly of graphite, are generally more brittle, vulnerableto excessive stress caused by fragmentation; three is installed, the removal of difficulties, easily damaged static ring.
2, the new better than old. Relatively new asphalt pump mechanical seal better than the old, but the quality of the new mechanical seal or choice of materials is not the time, with the larger size of the error will affect the seal: and permeability in the polymerization medium, such as static ring without excessive wear, or not replaced at all. Because the static ring in a static ring seat in a long time in the stationary state, so that deposition of polymers and impurities as a whole. Played a good sealing effect.
3, static demolition demolition than never good repair, asphalt pump once the mechanical seal leakage will be eager to overhaul. In fact, sometimes closed and not broken, just adjust the operation or the appropriate adjustments can be sealed to eliminate leakage. This can not only avoid wasteful and can verify their ability to judge the fault repair experience accumulation, improve the quality of maintenance.
4, the impeller lock nut tightening the better. Mechanical asphalt pump seal leakage, leakage between the sleeve and the shaft (inter axis leakage) is relatively common, generally, shaft impeller leakage is asked not the lock master lock, the buy in the shaft, such as more leakage factor axis pad failure, migration, shaft ask inside the impurities, shaft and sleeve with a larger form bit error, contact surface damage. Shaft gap between the parts; head thread is too long will cause inter axis leakage. Lock home lock will only lead to excessive axle pad premature failure, instead of moderate locking mother, so that axis asked pad remains elastic one piece, a lock nut in operation will automatically lock the right time, so that the axis is always in good sealing state.
5, ring ring tightening the better, in fact, dynamic tight ring seals harmful. One is the severe wear of sealing ring and sleeve leakage; two is to increase the dynamic axial adjustment of the resistance movement, the frequent changes in working conditions, unable to make timely adjustments; three spring fatigue is easy to damage: four ring seal is dynamic deformation, the impact of sealing effect.
6, the greater amount of spring compression seal effect. Buy otherwise, excessive compression spring, can lead to rapid wear of friction pairs, instantaneous burning; excessive compression spring lose their ability to adjust ring face, resulting in seal failure.