While many installations of sealing gasket profiles fit the pattern of a common design, such as enclosure door seals, EMKA aims to be able to see from a quick glance, typical applications that often new sections are needed to fit new equipment designs.
While being generally of a common concept, such as a ‘P’ profile form, the detail design and execution required to perform correctly in-situ may be significantly different from a standard production item. Custom-made products include: frames, rings, lengths, butyl, mastic, flock coating, notching, gluing, slip coating etc.
Custom gaskets therefore fall into three categories:
Gasket manufacturers typically produce a ‘standard range’ of commonly used sizes and styles which they carry in stock as extruded material – and in addition will accumulate over time a stock of tooling which covers all the other sections they have ever made – and from which it is possible to make new gasket.
The number of available sections in this way can easily number many hundreds, but even so new sizes and designs are frequently needed to suit specialist applications, such as sealing sunroofs, doors, classic vehicles, buses, Teleco cabinets, or with particular features: dual hardness profiles, wire inserts, ventilated profiles, flame retardant, Nitrile (resistant to oil).
Some common materials used in rubber extrusion include EPDM, SBR, (CR – Neoprene), Silicone, (NBR – Nitrile), and (NR – Natural rubber).
Common concerns re materials for custom sections include:
So customers who think they may require a custom profile gasket are encouraged to contact a specialist manufacturer such as the team at EMKA who can assist with the detail specification and hand hold the process.