Sealing Shielding

How a Self-Retaining Static Seal Efficiently Seals Bores in Non-Pressurized Applications

How a Self-Retaining Static Seal Efficiently Seals Bores in Non-Pressurized Applications What can be done if a bore requires radial sealing but lack of a lead-in chamfer prevents the installation of a seal? A situation like this occurs for instance when an existing bore should be closed with a cover and space around the bore is too small for a classic flange seal. A seal would not survive an attempt to install it in a bore without a lead-in chamfer. Part of the seal would be sheared off at the edge of the bore even if the edge was chamfered or rounded.


The principle: rolling instead of sliding

The Roll2Seal® concept solves this problem. Instead of destructively squeezing the seal at the critical edge it is simply made to roll across it. This is achieved by providing the cover with a geometry which, together with the edge of the bore, forces the seal to rotate. Subsequently, the triangular cross-section of the seal makes it possible for the seal to roll off at the dangerous edge of the bore with a minimum seal height and thus without risk of seal damage.
 

How a Self-Retaining Static Seal Efficiently Seals Bores in Non-Pressurized Applications Roll2Seal® -the self-retaining static sealing solution for easy and reliable closure of bores

  • Innovative geometry
  • No lead-in chamfer
  • No deburring
  • No lubrication
  • Immune to unbroken edges of the bore
  • Metal or plastic cover
  • Available in pre-assembled condition
  • Easy installation
  • Suitable for repeated and overhead installation
  • Space- and cost-saving


 

How a Self-Retaining Static Seal Efficiently Seals Bores in Non-Pressurized Applications Applications are found

  • where bores already exist for subsequent installation of additional component assemblies but require effective temporary or permanent sealing (e.g. for test runs or shipping),
  • where lubrication during the assembly process is not possible,
  • where non-pressurized systems require reliable sealing without screw connections.


Additional information:

Samuel Brenner

Posted by Samuel Brenner, application engineer, Engineered Materials Group Europe, Prädifa Technology Division












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