1
                           عمران:: 
                            تغییر شکل فشاری
                        
                        (A) (B) (C) (a)  Good  contact  (bond (d)   Rubber-like  properties (e)  Low  compression  set not  needed)  (f)  Webs should not  weld (b)  Correct size  (g)  Should  not  extrude (c)   Suitable  configuration  from  the  joint Also  required  (see  Section  3.1)  (1)  Impermeability  (3)  Recovery  (7)  Nonembrittlement  (8)  Not      deteriorate
Low  compression set
compression  set (iii)
To obtain these characteristics, good resistance to compression set (that is, the material must recover to its original size and shape sufficiently when re- leased) is required.
The critical condition for maintaining a positive contact pressure is when the joint is fully open at low temperature since compression set or lack of low temperature recovery may adversely affect sealant performance.
 
                        
                            واژگان شبکه مترجمین ایران