Owens Corning

366 Single End Roving


366 Type 30® Single End Roving is specifically designed for fast wet-out, good processing, high glass loading and excellent laminate properties, to maximize customers’ processing efficiency and minimize their production costs in pultrusion and filament winding applications.


Performance Attributes

  • Excellent Processing

    Owens Corning T30 does not have catenary, enabling smooth run-out, while low fuzz properties result in smoother parts and less downtime for clean-up; enabling higher efficiencies and lower manufacturing costs.

  • Outstanding Mechanical Properties

    Excellent shear and flexural properties in major resin systems, provide maximum part strength and long part service life.

  • Excellent Strand Wet Out With Reduced Cost

    Fast, uniform strand wet-out leads to higher glass loading with reduced resin, in all major resin systems. Resulting in optimized part production speed and increased productivity, reducing manufacturing costs.

  • Multi Resin Compatibility

    Excellent glass/resin bonding in polyester, vinyl ester, polyurethane, acrylic, and epoxy resins, providing the processor maximum flexibility with one input glass. This reduces cost with less inventory to carry and eliminates the need for costly downtime and labor to change input glass during job changes.

  • Superior Corrosion Resistance

    Compared to standard E-glass, Advantex® glass provides longer service life in applications facing corrosion.

  • Applications

    Pultrusion applications in polyester, vinyl ester, epoxy, polyurethane, and acrylic resin systems, using conventional dip bath or resin injection technology. Pultruded structural applications: ladder rails, grating systems, rebar and poles, etc.

Technical Information

The following data was generated using production material 366 roving –113 Yield (4400 Tex).

Technical Characteristics (Single-End Roving)

Mechanical Properties Strand Tensiles ASTM D 2343 Inter-laminar Shear Strength ASTM D 2344
Straight (MPa) Strength (Ksi) Dry Shear Strength (MPa) Dry Shear Strength (psi) Shear Strength Retention 72 hr boil (%)
DER 331 Epoxy Resin 2344 340 61.6 8940 98%
Polyester F701 Resin 2310 335 72.5 10520 86%


Region Yield Tex
N. America 450 - 330 - 250 - 113 1100 - 1500 - 2000 - 4400


Rovings are available in a single-end internal-pull package. Each pallet weighs about 1 ton and can be packaged in bulk or Creel-Pak® packaging format. Pallets are stretch-wrapped for load stability and for protection during transport. All individual packages are wrapped with Tack-Pak® packaging to aid package run-out and transfer. More information is available in the Customer Acceptance Standards.


Each individual package is labeled with information including: product name, tex/yield, producing plant, and production date.


It is recommended to store glass fiber products in a cool, dry area. The glass fiber products must remain in their original packaging material until the point of usage; the product should be stored in the workshop, within its original packaging, 48 hours prior to its utilization, to allow it to reach the workshop temperature condition and prevent condensation, especially during cold season. The packaging is not waterproof. Be sure to protect the product from the weather and other sources of water. When stored properly, there is no known shelf life to the product, but retesting is advised after three years from the initial production date to insure optimum performance.


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Bryan Minges