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.
 

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

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:

• Roll2SEal Solutions Website 
• Webinar: Roll2Seal^®  ̶  The Self-Retaining Static Sealing Solution
• Brochure: Roll 2 Seal - Self Retaining Static Sealing Solution for Easy and Reliable Closure of Bores

Watch our video on this product:

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

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