2# ClipFoam™
ClipFoam™ 2# is a closed cell, crosslinked polyethylene foam with a density of 2 pcf and a compression deflection of 5 lb/sq-in at 25% deflection. It is rated for excellent chemical resistance and is available in black or white with a single-coated permanent or removable adhesive. The material is lightweight, smooth, flexible, and non-toxic, suited to weatherproofing, gasket, shock absorption, and sound damping applications.
Key Properties
- Compression Deflection @ 25%: 5 lb/sq-in (ASTM D3575)
- Compression Set: 31% (ASTM D3575)
- Tensile Strength, Machine Direction: 69 lb/sq-in (ASTM D3575)
- Tensile Elongation, Machine Direction: 136% (ASTM D3575)
- Density: 2 pcf
- Chemical Resistance: Excellent
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 1/8″, 3/16″, 1/4″, 3/8″, 1/2″, 3/4″, 1″ | — |
| Color | Black, White | — |
| Material/Substrate | Crosslinked Polyethylene Foam | — |
| Density | 2 pcf | — |
Mechanical Properties
| Property | Value | Test Method |
| Compression Deflection @ 25% | 5 lb/sq-in | ASTM D3575 |
| Compression Deflection @ 50% | 14 lb/sq-in | ASTM D3575 |
| Compression Set | 31% | ASTM D3575 |
| Tensile Strength, Machine Direction | 69 lb/sq-in | ASTM D3575 |
| Tensile Strength, Cross-Machine Direction | 42 lb/sq-in | ASTM D3575 |
| Tensile Elongation, Machine Direction | 136% | ASTM D3575 |
| Tensile Elongation, Cross-Machine Direction | 111% | ASTM D3575 |
| Tear Strength, Machine Direction | 7 lb/in | ASTM D3575 |
| Tear Strength, Cross-Machine Direction | 12 lb/in | ASTM D3575 |
| Durometer/Hardness (Shore A) | 7 | ASTM D2240 |
| Durometer/Hardness (Shore 00) | 51 | ASTM D2240 |
Thermal Properties
| Property | Value | Test Method |
| Thermal Stability, Ave MD% – 1.6 – 2.2 | -1.42 | — |
| Thermal Stability, Ave CD% – 1.8 – 2.0 | -0.66 | — |
Chemical Resistance
| Property | Value | Test Method |
| Chemical Resistance | Excellent | — |
Flame & Fire Performance
| Property | Value | Test Method |
| Flame Retardant | Flame retardant by special request | — |
- Weatherproofing seals and gaskets in building, fenestration, and enclosure assemblies requiring a lightweight, conformable foam
- Shock and vibration damping pads in consumer and light industrial products
- Sound absorption and insulation components in cleanroom drywall installation and acoustical ceiling tile gasketing
- Glass separator pads, bumpers, and shims in glazing and panel handling applications
- Glazing tape applications where a smooth, closed cell polyethylene foam with adhesive coating is required
Common industries: construction, glazing, electronics, consumer goods, HVAC, acoustics.
ClipFoam™ 2# is the lowest-density grade in the ClipFoam crosslinked polyethylene foam series, offering a light, highly conformable closed cell structure at 2 pcf. It is designed as a resilient, multi-purpose foam for weatherproofing, gasket, and sealing applications, and is equally suited to shock and sound absorption, thermal insulation, vibration damping, and use as a glazing tape or glass separator. It is available with a single-coated permanent or removable adhesive in black or white.
The foam exhibits excellent chemical resistance and is characterized by a smooth, flexible surface that is easy to handle and convert. Tensile strength is 69 lb/sq-in in the machine direction and 42 lb/sq-in in the cross-machine direction per ASTM D3575. Tear strength is 7 lb/in (MD) and 12 lb/in (CD). Compression set is 31% per ASTM D3575. Durometer hardness is Shore A 7 and Shore 00 51 per ASTM D2240.
Thermal stability averages -1.42% change in the machine direction and -0.66% in the cross-machine direction. Flame retardant formulation is available by special request.
No compliance standards are specified on the manufacturer’s TDS for this material.
What differentiates the 2# ClipFoam™ from higher-density grades such as the 4# and 6#?
The 2# is the lowest-density grade in the ClipFoam crosslinked polyethylene foam series at 2 pcf, with a compression deflection of 5 lb/sq-in at 25% and the widest thickness range available (1/8" through 1"). It is the most conformable and lightest grade, suited to applications requiring minimal compression resistance and the broadest range of available gauges.
Why is compression set important for a closed cell polyethylene foam?
Compression set measures how much permanent deformation the foam retains after being held under load. The 2# ClipFoam™ has a compression set of 31%, which means applications involving sustained compression — such as gaskets and seals held under constant clamping force — should account for that level of permanent set when specifying the material for long-term sealing performance.
What is the service temperature range for the 2# ClipFoam™?
A specific service temperature range is not stated on the manufacturer's TDS for this grade. Thermal stability data is provided for the machine direction (-1.42%) and cross-machine direction (-0.66%).
Is the 2# ClipFoam™ suitable for flame-rated environments?
A flame retardant version is available by special request, as stated on the TDS. No specific flame rating or standard is listed on the TDS for the standard grade.
How should the 2# ClipFoam™ be specified?
Specify grade (2# ClipFoam™), thickness, color (Black or White), adhesive type (permanent or removable, if applicable), compliance requirements if applicable, dimensional tolerances, and finished format.
