ED ring is one of the many seals for industrial use. It can be used
as a special seal for pneumatic and hydraulic joints such as pipe
joints, hydraulic plugs, and transition joints, with better sealing
effects than traditional O-rings. This elastomer seal can be
applied to threaded ports and screw ends as an axial static seal.
There is hardly any change with the cross-section under high
pressure. Folon.A took the lead in China in initiating the
manufacture of ED rings that satisfies the DIN3869 standard, and
still maintains its leading position in the market.