Inflatable seal for leak test
Western polyrub is specialize in making small inflatable seal without joint up to 4 inch id, western make Inflatable seals and bladders very small diameters with specialize proper molds. western has made smallest seal for shaft ,Molding the seals exact fit for demanding leak testing and other applications.
The bellow pic of inflatable seals with an open foot design. This style works well and perform well when we supply a metal holder for the seals. Applications are for leak testing and also various valve designs.