Rubber seal for use in the aviation field

Airlines with special rubber sealing profile shapes, according to its sealed form , can be divided into compression seals and pneumatic seals two kinds . Compression of the rubber section with rubber seal and rubber projections point rebound compression stress generated to effect sealing , mainly used in large aircraft and other fields.
Advantages: compression resilient rubber material made ​​high demands . Its sealing sectional structure forms, only the required door seals have ties with the aircraft little correlation with other agencies , the relative independence of the strong .
Disadvantages : long-term repeated use will be caused by aging of the rubber material of the stress relaxation , the sealing effect will gradually deteriorate , while at lower temperatures because of poor low elasticity rubber seal leakage problem occurs .
Inflatable rubber seal closed with the use of a hollow cavity filled with gas , generated by the gas pressure to achieve the expansion of the rubber surface contact with the door bolt seals, the seal section is mainly a closed hollow totally enclosed structure , mainly used in fighter jets and other fields.
Large sealing the gap between the door and the hatch , due to processing, assembly accuracy, or the ambient temperature changes by thermal expansion and contraction deformation , resulting in the gap to be sealed is inconsistent , or the change, and its variation range is generally more than 3mm or even up to 10mm or more , the ordinary seal is difficult to achieve the desired sealing effect. In this case , the need for a change in the seal gap with sealing products . Inflatable seal is to meet the needs of the success of this kind of new technology.
Advantages : the relative compression rubber sealing tape , the material itself is not so high compression performance , the main use of the gas filling pressure to adjust the sealing effect , the prolonged use of supplementary rubber material the stress relaxation , sealing effect achieved consistently , it will not appear at low temperatures because of the low elasticity of rubber seal leak problem worse appear relatively high reliability sealing effect .
Disadvantages : Because of its working characteristics of inflatable seal for airtight seal with integral high demands , barrier security seals sealed with no small parts can cause gas leaks defects which lead to an overall decline in sealing performance , serious or even cause seal failure a major accident ; aircraft other institutions associated with a great degree , maintenance complex .