Health & Environmental Research Online (HERO)


Print Feedback Export to File
5699472 
Journal Article 
Rubber Seals for Steel Hydraulic Gates 
Schmausser, G; Hartl, G 
1988 
High quality types of rubber which are particularly resistant to aging have been used for gate seals. These include natural rubber, styrene-butadiene compounds of varying hardness, and chloroprene compounds, e.g. neoprene. Chloroprene compounds are used particularly where the seal is subjected to high ozone levels and harsh weather conditions. These materials must meet the international specifications for the following physical properties: high tensile strength; high tear resistance; good resistance to abrasion; low water absorption; and resistance to aging. Results are presented for the testing of friction behavior, force/deflection behavior, and abrasion characteristics of various seal materials with polytetrafluoroethylene (PTFE) cladding. From the results it is possible to calculate the necessary seal construction and thickness of the PTFE cladding for the various load conditions by taking into account the total operational movement (the amount of movement and frequency of use). At the same time, an approximate life expectancy of a particular seal can be predicted in terms of meters (total operational movement). (Sand-PTT) 
Water Resources Abstracts; Hydraulic gates; Hydraulic equipment; Rubber seals; Strength; Friction