25# PVC Glazing Tape
25 lb/ft³ Double-Sided Acrylic PSA Heavy-Density Closed-Cell PVC Glazing Tape
25# PVC Glazing Tape is a heavy-density, closed-cell PVC foam with an aggressive emulsion-based acrylic PSA (A3) on both sides cast on a 5 mil 83# super calendared kraft paper, available in a single thickness of 1/32″. Adhesion to steel (1 mil PET film) is 2 lb/in width minimum per ASTM D1000, compression deflection at 25% is 14 psi per ASTM D1667, and the service temperature range is -30°F to 200°F. The tape is specifically designed for the most demanding cushioning, shock absorption, and wear-resistant sealing applications, and passes FMVSS-302.
Key Properties
- Adhesion to Steel (1 Mil PET Film): 2 lb/in width minimum (ASTM D1000)
- Tensile Strength: 130 psi (ASTM D412)
- Compression Set @ 25%: 6% (ASTM D1667)
- Service Temperature: -30°F to 200°F
- Liner: 83# super calendared kraft paper
- Density: 25 lb/ft³ (ASTM D1667)
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 1/32″ | — |
| Color | Black | — |
| Material/Substrate | Polyvinyl Chloride (PVC) | — |
| Density | 25 lb/ft³ | ASTM D1667 |
| Durometer/Hardness (Shore 00) | 58 | ASTM D2240 |
| Liner | 83# super calendared kraft paper | — |
| Thermal Conductivity | 0.33 btu/(h·ft²·°F) | ASTM C518 |
Adhesion Properties
| Property | Value | Test Method |
| Adhesive System | Permanent Adhesive | — |
| Adhesive Side | Double Sided Adhesive | — |
| Adhesive Type | Acrylic (Emulsion based) | — |
| Adhesion to Steel (1 Mil PET Film) | 2 lb/in width minimum | ASTM D1000 |
Mechanical Properties
| Property | Value | Test Method |
| Compression Deflection @ 25% | 14 psi | ASTM D1667 |
| Compression Set @ 25% | 6% | ASTM D1667 |
| Water Absorption | 1.2% | GTP (1) |
| Tensile Strength | 130 psi | ASTM D412 |
| Elongation | 110% | ASTM D412 |
Thermal Properties
| Property | Value | Test Method |
| Service Temperature | -30°F to 200°F | — |
| Recommended Application Temperature | 50°F to 110°F | — |
Flame & Fire Performance
| Property | Value | Test Method |
| Flame Retardant | Yes | — |
| FMVSS-302 | Pass | — |
Chemical Resistance
| Property | Value | Test Method |
| Acid Resistance | Good | — |
| Chemical Resistance | Excellent | — |
| Solvent Resistance | Excellent | — |
Environmental Performance
| Property | Value | Test Method |
| Weather Resistance | Excellent | — |
| Abrasion Resistance | Excellent | — |
| Fungi Resistance | Excellent | — |
| Oxidation Resistance | Excellent | — |
| UV Resistance | Excellent | — |
Compliance
- FMVSS-302 — Compliant (Pass)
- Long-life seals against air, moisture, light, and dust in thermal, electrical, and sound insulation assemblies requiring the highest-density closed-cell PVC foam tape in the series
- Heavy-duty cushioning, shock absorption, and wear-abrasion-resistant sealing in demanding industrial and construction applications
- Die-cut gaskets and fastener-penetrated components where foam density permits exact dimensional tolerances and ease of penetration
- Applications requiring a very thin (1/32″) double-sided PVC foam tape with high hardness, high tensile strength (130 psi), and very low compression set (6%) at 25% deflection
- General heavy-duty glazing and construction sealing requiring FMVSS-302 and flame retardant compliance in the firmest grade of PVC foam tape
Common industries: Construction, glazing, industrial manufacturing, automotive, appliance.
25# PVC Glazing Tape is a 25 lb/ft³ heavy-density, closed-cell PVC foam double-sided glazing tape using an aggressive A3 acrylic emulsion-based pressure-sensitive adhesive on both faces, cast on a 5 mil 83# super calendared kraft paper liner.
The TDS describes it as designed for the most demanding applications — including thermal, electrical, and sound insulation, cushioning against shock and wear in high-duty use, and long-life seals against air, moisture, light, and dust penetration when compressed 30% or more. High internal strength resists pressure from outside forces and high hardness resists deterioration. The foam density permits exact die cuts and ease of penetration by fasteners.
With the highest density (25 lb/ft³), highest hardness (Shore 00 58), highest tensile strength (130 psi), and highest compression deflection (14 psi at 25%) in the PVC glazing tape series, this grade is suited to the heaviest loads and most abrasion-prone conditions. Compression set at 25% is 6% per ASTM D1667 — the lowest in the glazing tape series. Elongation is 110% per ASTM D412. Water absorption is 1.2% per GTP (1).
Thermal conductivity is 0.33 btu/(h·ft²·°F) per ASTM C518. Recommended application temperature is 50°F to 110°F. Abrasion, chemical, solvent, fungi, oxidation, and UV resistance are all rated Excellent; acid resistance is Good. The material is flame retardant (Yes) and passes FMVSS-302. No AAMA 810.1 pass is listed on this TDS.
Compliant with FMVSS-302 (Pass).
Not sure which glazing tape family fits your detail? See the guide to glazing tape types and methods: foam glazing tape, structural glazing tape, and glazing spacer tape compared.
What differentiates 25# PVC Glazing Tape from the 15# PVC Glazing Tape?
25# PVC Glazing Tape is the heavier-density grade at 25 lb/ft³ versus 15 lb/ft³, with the highest Shore 00 hardness (58 vs. 40), highest compression deflection at 25% (14 psi vs. 7 psi), highest tensile strength (130 psi vs. 80 psi), and lowest compression set at 25% (6% vs. 8%) in the glazing tape series. It is available only in a single 1/32" thickness — significantly thinner than the 15# grade's range of 1/16" to 1/2". The 25# liner is an 83# super calendared kraft paper (cast construction) versus the 15# grade's 84# poly-coated brown kraft. The 25# TDS adds abrasion resistance (Excellent) not listed on the 15# TDS. No AAMA 810.1 pass is listed on the 25# TDS; no S3 adhesive option is noted.
Why is peel adhesion important for a double-sided PVC glazing tape used in heavy-duty sealing and cushioning applications?
In heavy-duty sealing and cushioning applications, the tape must maintain simultaneous adhesion to two substrates under sustained mechanical loads, vibration, thermal cycling, and potential chemical exposure. The A3 emulsion-based acrylic adhesive's bond-builds-with-time characteristic means the initial tack provides immediate positioning hold, while the long-term adhesive strength continues to develop after installation — critical for applications where the tape is subjected to progressive loading after assembly. Adhesion to steel (1 mil PET film) of 2 lb/in width minimum per ASTM D1000 establishes the minimum baseline holding power.
What is the service temperature range for 25# PVC Glazing Tape?
The service temperature range is -30°F to 200°F as listed on the TDS. Recommended application temperature is 50°F to 110°F.
Is 25# PVC Glazing Tape suitable for regulated automotive environments?
Yes. 25# PVC Glazing Tape passes FMVSS-302 and is flame retardant (Yes), as listed on the TDS. No AAMA 810.1 pass is listed on this TDS. End-users requiring AAMA 810.1 compliance should refer to the 15# PVC Glazing Tape.
How should 25# PVC Glazing Tape be specified?
Specify grade (25PVCGZ), density (25 lb/ft³), thickness (1/32"), color (Black), adhesive type (A3 emulsion-based acrylic, double sided), liner (83# super calendared kraft paper), applicable compliance requirements (FMVSS-302), dimensional tolerances, and finished format (sheet, slit roll, or die-cut component).
