Spring-Fast® Grommet Edging: The "SL" Series
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 Spring-Fast Grommet Edging:  SL-FST Series

SL-FST is fully encapsulated in a flexible non-halogen, flame retardant,
low smoke, low corrosive, and low toxic TPE for EN 45545-2 FST compliant abrasion protection.
With 4-axis flexibility, it can be used as best in class grommet edging or edge trim.

Key Benefits

  • FST compliant for EN 45545-2.
  • Stainless steel core fully encapsulated in a flexible non-halogen, flame retardant, low smoke, low corrosive, and low toxic thermoplastic compound for FST compliance and abrasion protection.
  • Snap on installation lowers costs 49% vs. grommets with glue.  Watch the 4 min. video below.
  • Improves efficiency 9.5x – due to fewer steps in workflow.

Grommet Differentiation Table (GDT)

Grommet SeriesCastle GeometryFlexibilityPolymer CoatingExtra Cushion100% TPE EncapsulationHigh HeatMil SpecApplication MethodNotes
SL-FST OpposingMulti axisYesNoYes194°F/90°CNoSnap on/No adhesiveEN45545-2/NFPA130 compliant
No cure time delay
MS21266 Nylon Opposing2 axisNAYes NA257°F/125°CYesAdhesive Required8-24hr cure time delay
MS21266 Teflon Opposing2 axisNAYes NA527°F/275°CYesAdhesive Required8-24hr cure time delay


  • Where Fire, Smoke, Toxicity protection is needed – e.g., rail, aerospace, automotive, etc. 
  • Used on straight, roll formed and flanged edges
  • Multi axis flexibility for flanged holes and small radii inside or outside corners
  • Also used as a high performance edge trim


The old nylon grommet with glue is old, inefficient, and costly.  DTi has a better way.

  • 100% encapsulated in a flexible non-halogen EN 45545-2 compliant TPE 
  • Flame retardant, low smoke, low corrosive, and low toxic 
  • Best in class abrasion protection
  • Snaps on fast with finger pressure – no adhesive
  • Installs continuously with multi axis conformity
  • Self locking with strong edge retention with no adhesives
  • Simpler to install: no adhesive, fixturing, curing, clean up, or OSHA concerns
  • Maintenance is far easier due to its ease of application, use, and removal
  • Customization available (lengths, colors, and print)

Key Specifications

  • EN 45545-2 compliant TPE
  • Resistant to hydrocarbons, immersion, salt spray, shock, and vibration
  • Operating Temperature Heat continuous to -13°F to 194°F (-25°C to 90°C)
  • RoHS and DFARS Compliant
  • High gripping strength, corrosion resistance and dielectric strength
  • High Shock and Vibration Resistance to rms G 41.7
  • 7 sizes to fit edge thicknesses: 0.02” to 0.145” (0.5 mm to 3.7 mm)
  • Available in custom cut lengths & factory pre-cut reels of 25 ft. (7.6 m), 100 ft. (30.5 m) or 500 ft. (152 m)
  • Tools available: Installation roller, full by-pass shears, castle removal, measuring scale,
  • go-no go sizing gauge, cutter cart

Spring-Fast SL-FST Transit and Rail Series Specifications and Ordering Options: