The easy route to better protection

Making its European appearance at the Paris Air Show last month was a composite grommet edging material that can reduce installation costs and provide added protection against cable damage, and stays in place without adhesive.

Spring-Fast edging from US based Device Technologies has been designated as a standard replacement part for civil aircraft by the Federal Aviation administration (FAA) in the US and the Civil Aviation Authority in the UK. Extensive US Military Standard and independent laboratory testing has shown the material can resist shock, vibration, salt spray, immersion, chemicals, oil and wide temperature extremes.

It has been successfully used to protect cables from chafing in a number of aerospace manufacturing and maintenance applications, such as fuselage, wing and rib sections, helicopters, avionics and electronics bays, and in assembly of medical and telecommunications equipment, and computers.

Wherever wiring or cables pass through openings in sheet metal there is potential for abrasion and failure as the insulation comes in contact with sharp edges. Hector Petri, company technical director says: “Spring-Fast solves the three most common problems associated with the plastic grommets traditionally used to prevent such damage: installation is quick and easy, the material does not become brittle over time and there is no glue to fail in use.”

As it mechanically locks onto any two-axis contour with finger pressure instead of toxic and messy adhesives, the material’s installed cost is lower than competing methods. It is made of spring-tempered stainless steel coated with thermosetting polymer resin. It is designed for manufacturing and sssembly.

The material provides a smooth, non-conductive surface on inside angles, outside angles, oval slots, irregular holes and other configurations. Several sizes accommodate sheet thicknesses from 0.6mm to 6.6mm.

Once mounted, the product remains firmly in place indefinitely. It includes a polymer cushion that helps prevent wear and damage to insulation.

Device Technologies Tel: +1 508 229 2000