Raychem FCSM Heat Shrink Tubing: Heavy-Wall and Flame-Retardant for Industrial and Transportation Applications

The Raychem FCSM heat shrink tubing from TE Connectivity is a heavy-wall, flame-retardant shrink tubing ideal for insulation and mechanical protection of low voltage cables and cable accessories. This tubing is widely used in sectors such as mining, power plants, construction, transportation, and railways, where both flexibility and flame retardancy are essential.

The FCSM heat shrink is available with or without an adhesive layer and provides high mechanical strength and exceptional cut-through resistance. Due to its specialized material composition, the FCSM tubing surpasses the properties of standard low voltage cable jackets. The material combines flame-retardant properties with mechanical flexibility and abrasion resistance, making the FCSM heat shrink suitable for a wide range of demanding applications.

Key Features and Applications of the Raychem FCSM Heat Shrink Tubing

The Raychem FCSM tubing can be applied to various substrates, including standard poly or elastomer-insulated cables, lead-sheathed cables, and cables with aluminum or steel armor. The tubing is UV-stabilized, ensuring long-lasting performance in outdoor applications. Under normal storage conditions, the FCSM tubing has an unlimited shelf life and is MSHA-approved (No. 07-KA090013-MSHA), emphasizing its reliability for critical applications.

Raychem FCSM Heat Shrink Tubing Features

  • High electrical properties and mechanical strength for low voltage applications

  • Flame-retardant according to IEC 60332-1 standard

  • Heat shrink tubing with or without sealing coating

  • 3:1 shrink ratio

Product Dimensions of Raychem FCSM

FCSM with adhesive layer and 3:1 ratio – click through to view the products

Type with adhesive layer Inner diameter before shrinkage Inner diameter after shrinkage Wall thickness
FCSM-9/3-1200/S 9mm 3mm 2.0mm
FCSM-19/6-1200/S 19mm 6mm 2.4mm
FCSM-28/9-1200/S 28mm 9mm 3.2mm
FCSM-38/12-1200/S 38mm 12mm 4.1mm
FCSM-51/16-1200/S 51mm 16mm 4.1mm
FCSM-68/22-1200/S 68mm 22mm 4.1mm
FCSM-90/30-1200/S 90mm 30mm 4.1mm
FCSM-120/40-1200/S 120mm 40mm 4.1mm
FCSM-177/63-1200/S 177mm 63mm 4.1mm

FCSM without adhesive layer and 3:1 ratio – click through to view the products

Type without adhesive layer Mil-Spec Inside diameter before shrinking Inside diameter after shrinking Wall thickness
FCSM-9/3-A/U VG 95343 T05 K005 A 9mm 3mm 2.0mm
FCSM-19/6-A/U VG 95343 T05 K001 A 19mm 6mm 2.4mm
FCSM-28/9-A/U VG 95343 T05 K002 A 28mm 9mm 3.2mm
FCSM-38/12-A/U VG 95343 T05 K006 A 38mm 12mm 4.1mm
FCSM-51/16-A/U VG 95343 T05 K003 A 51mm 16mm 4.1mm
FCSM-68/22-A/U VG 95343 T05 K007 A 68mm 22mm 4.1mm
FCSM-90/30/U VG 95343 T05 K008 A 90mm 30mm 4.1mm
FCSM-120/40/U VG 95343 T05 K009 A 120mm 40mm 4.1mm
FCSM-177/63/U VG 95343 T05 K010 A 177mm 63mm 4.1mm

Ordering Information Raychem FCSM

Standard color: Black (-0)


Size selection: Always order the largest size that will accurately shrink onto the part to be covered.


Packaging: Different sizes available per type.


Order description: Specify product name, size, length, and seal designation (e.g., FCSM-9/3-1000/S(s10)).

We are happy to help you make the right choice

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TE Connectivity RAYCHEM distributor