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  • SEMCO Packaging and Applications Systems Single and Multi-Component Materials
  • Semco® Pasa-Jell Products have been discontinued by PPG Aerospace
  • SEMCO Pasa-Jell 105 And 105-M Bond Enhancement For Aluminum Alloys

SEMCO Pasa-Jell 105 And 105-M Bond Enhancement For Aluminum Alloys

Semco Pasa-Jell 105 and 105-M has been discontinued by PPG Aerospace.

Discontinuation Engineering Bulletin

Semco Pasa-Jell 105 and 105-M are blends of acids, activators, and inhibitors designed to provide a balanced ratio of compounds to maintain the effectiveness of etch rate.

Semco Pasa-Jell 105 is inorganically thickened to permit application in localized areas. Semco Pasa-Jell 105-M does not contain the inorganic thickener permitting immersion of large surfaces.

Bond strength improvement is based on surface activation, which provides a receptive surface for adhesion.

Semco Pasa-Jell 105 and 105-M chemically clean and activate the surface to improve the adhesive’s chemical bonding. The etch life of Semco Pasa-Jell 105 and 105-M is approximately 125 to 250 square feet of surface per quart.

Uses

  • To improve the metal bond adhesions of aluminum alloy.

Application

For optimum results, the surface should be degreased with a solvent followed by either a wet or, preferably, a dry blast with a fine grit of 250 or 320 aluminum oxide to remove all corrosion products and to condition the metal surface before application of the Semco® Pasa-Jell product. Where blasting is not practical, the surface can be sanded lightly with aluminum oxide-coated abrasives.

Next, apply a layer of Semco® Pasa-Jell 105 to localized areas with a polyethylene, polypropylene, or fluorocarbon bristle brush immediately following the abrasive treatment and allow it to stand for about 15 minutes. The Semco® Pasa-Jell product should then be rinsed off with cool tap water and allowed to dry at room temperature. For immersion treatment of large metal surfaces, use Semco® Pasa-Jell 105-M in tanks.

Technical Data Sheet (pdf) on the Pasa Jell 105

For more information about these products contact Bergdahl Associates, Inc.

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Helpful Information

Information about application of sealants and adhesives.

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