RAIL/Transit Industry

Rail OEMs tell us they need components that combine performance, safety and reliability. 

For products like grommet edging and seals this translates into three main features

Silicone or Thermo-Plastic Elastomers (TPE)

Metal Reinforcement

Flame, Smoke, Toxicity (FST) Compliance

Seal-Fast™ Seals and Spring-Fast® SL-FST Grommet Edging meet all three.

 Spring-Fast SL-FSTSeal-Fast Silicone Seals
Metal Reinforced for performanceYesYes
Silicone or TPE for Performance/Reliability/FSTYes-TPEYes-Silicone
Flame, Smoke, Toxicity (FST) ComplianceYesYes
Profiles available7100s of profiles
CustomizableYesYes with CFEA
US madeYesYes
US sourcing requirements.YesYes
Once piece productn/aYes with film bonding
Allows Unified design SpecsYesYes
Spring-Fast® Military: The "NASM22529/2" Series
Seal-fast

1.     Metal Reinforced for Performance/Reliability

  • Spring-Fast SL-FST’s encapsulated spring steel core provides strong edge retention without adhesive. It lowers install costs by 49% vs. grommets with glue as its finger pressure application significantly reduces the install steps.
  • Seal-Fast Silicone seals reinforced with steel/stainless steel wire which gives it durability, strength and grip.

2.     Silicone or TPE for Performance/Reliability/FST:

  1. Silicone Seals
  • Flexible, durable, easy to apply, with a high tear strength and strong edge retention
  • A low compression set recovers its shape even on doors that close hundreds of times a day.
  • Resistant to adverse weather, UV, & ozone. Ideal for external use at high speeds.
  1. SL-FST Grommet Edging encapsulated in Thermo-Plastic Elastomer (TPE)
  • TPE is resistant to weather conditions, UV, & ozone.
  • FST compliant with EN 45545-2 & US NFPA standards.  Flame retardant, low smoke & low toxicity,
  • SL-FST design creates best in class performance and 49% installation savings

3.     Flame, Smoke, Toxicity (FST) Compliance

  1. Seal-Fast Silicone seals are FST compliant:
  • High fire resistance and self-extinguishing characteristics: Resistance to smoke development
  • A high-temperature range that diminishes the chance of a potential fire outbreak
  • FST compliant with EN 45545-2, E662, E162, and BMP-800 certificated test results
  1. Spring-Fast SL-FST encapsulated in a TPE:
  • Flame retardant, Low smoke-producing, Low toxicity producing.
  • FST compliant with EN 45545-2 (within requirement sets R22 and R23 for small critical components it is certified for Smoke Density, Oxygen Index and Toxic Gas for Hazard Levels, 1, 2, and 3.)

    Across the rail industry the goal to increase passenger satisfaction is driving the rapid development and deployment of in-flight entertainment systems, screens and devices. Effective and safe cable protection is imperative for these systems.

    DTi is taking on a growing number of transit projects in N. America and Europe because we meet OEM needs.  They add these products to their e-books or internal design guides to make them available to their teams.

    Products that meet FST standards like EN45545-2, ASTM and other international certifications allow rail OEMS worldwide to implement worldwide unified design specifications which lowers costs and raises efficiency for everyone.

    Find out more about Spring-Fast SL-FST

    Find out more about Seal-Fast Silicone

    Example Applications

    ♦    Euro Based Rail OEM

    Locomotive Engine compartment seal

    Off the shelf Seal-Fast™ EPDM met their FST and USA content needs 

    ♦    North American Based Rail OEM

    Coach door and window seals

    Off the shelf/custom 1 piece Seal-Fast vulcanized seal (D3-228-S044)to meet FST and USA content needs 

    ♦     Multi National Train OEM

    Power Supply door panel seal

    Custom Seal-Fast EPDM met FST /USA content needs.  Longer wing flange and optimized the CLD characteristics.

    ♦    Asia Rail OEM

    Braking System M-9 Cars 

    Custom 1 piece Seal-Fast Silicone D3-282-S044 –adhesive bonded ends.  It had to fit panel thicknesses of 0.075”, corner radii of 1.5″ & pass the IPX6 rating for leakage

    ♦    US Based Rail OEM
    Interior floor wiring ducts
    Spring-Fast Grommet edging to stop wire abrasion/data loss plus no adhesive to reduce FST concerns.

    Find out more about Spring-Fast SL-FST

    Find out more about Seal-Fast Silicone