DIMPLE-PLEATâ filters. This unique filter utilizes a completely separatorless and self-supporting media pack, requiring no gule, string, or strips of media to hold adjacent folds of the media apart. Such separator materials are potential sources of off-gassing or particle generation, and may not meet the stringent smoke and flame requirements of UL 900 Class 1. They can also block up to 10% of the filter’s effective media area! The DIMPLE-PLEAT eliminates these materials as a contamination concern, while fully utilizing the filter’s media content and providing a clean, streamlined appearance.

Instead of a gasket, the filter has a perimeter channel filled with BLU-JELâ Seal, and a highly self-adhesive, self-healing silicone compound. When the filter is raised into position, a ‘knife-edge’ flange in
the hood mates into the gel channel, effecting a leak-tight interface. A simple retainer on 4 corners is turned 90° to hold the filter in place and the design of the retainer assembly will not allow the knife edge to bottom out in the gel track of the filter.

Invented to eliminate the bypass problems associated with conventional gasketed filters, the gel seal technique provides superior leak protection for critical cleanroom installations.

                                                        Gel Seal Dimple Pleat Filters

Gel Seal Dimple Pleat filters have a channel provided on the downstream perimeter of the filter frame and is factory-filled with Blu-JelÒ Sealant. A knife edge flange located in the hood or module is sized to mate into the channel. When the filter is lifted into place, the knife edge submerges into the gel to effect a leaktight interface between the filter and the equipment. The filter is held in place with simple retainers at each corner.

• Maximum utilization of media for long life
• No potential for offgassing or yellowing from glue lines
• No particle generation or fraying of strings or strips
• Lightweight, easy to handle
• Superior appearance
• State of the art testing
• UL 900 Class1 and Factory Mutual Approved
• Blu-JelÒ Seal