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Fiberglass Insulation Inserts

Proto Fiberglass Insulation Inserts are preformed, formaldehyde-free pipe insulation inserts designed for use in PVC systems. Engineered for thermal efficiency, corrosion resistance, and low irritability, these inserts offer easy installation and durability across a wide range of temperatures (sub-zero to 1000°F). They meet or exceed ASTM, ASHRAE, and fire safety standards, making them ideal for residential, commercial, and industrial applications.

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Description

Proto Fiberglass Insulation Inserts are preformed, formaldehyde-free pipe insulation inserts designed for use in PVC systems. Engineered for thermal efficiency, corrosion resistance, and low irritability, these inserts offer easy installation and durability across a wide range of temperatures (sub-zero to 1000°F). They meet or exceed ASTM, ASHRAE, and fire safety standards, making them ideal for residential, commercial, and industrial applications.

Specifications

  • Material: Formaldehyde-free mineral fiber (fiberglass)
  • Density: 1 PCF (up to 2″ thick)
  • Compressive Strength: Not specified
  • Service Temperature Range: Up to 538°C (1000°F)
  • Thermal Conductivity: 0.23 BTU•in/(hr•ft²•°F) at 75°F (0.033 W/m·°C); increases with temperature
  • Water Vapor Permeability: <3% moisture sorption by weight (ASTM C1104)
  • Standard Sizes: Preformed to fit PVC elbows; insert thicknesses vary by pipe size and temperature as per ASHRAE 90.1-2019

Features

  • Soft Fibers: Less irritating and easy to install
  • Preformed Fit: Designed to efficiently fill PVC elbow cavities
  • Emission-Friendly: Odorless and low VOC formulation
  • Thermally Efficient: Meets or exceeds fiberglass pipe insulation thermal performance
  • High Resilience: Maintains tensile strength and thickness during installation
  • Application Versatility: Suitable for use in household, commercial, institutional, and lab environments

Certifications & Compliance

  • ASTM C547: Mineral fiber pipe insulation specification
  • ASTM C665 & C1617: Corrosion resistance on plain steel
  • ASTM C1338: Fungi resistance
  • ASTM C1304: Odor rating (no objectionable odor)
  • ASTM C1104: Moisture sorption <3% by weight
  • ASTM C411: Operating temperature up to 1000°F (538°C)
  • ASTM E84: Flame Spread/Smoke Development ≤ 25/50
  • CAN/ULC-S102: Canadian tunnel test for flame/smoke
  • ASHRAE 90.1 (2019): Energy efficiency standard for pipe insulation

Documents

Proto Fiberglass datasheet

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