R-242
R-242 is a self-wound double-coated rubber adhesive tape with 2.5 mils of aggressive permanent rubber adhesive on the exposed (air) side and 2.0 mils on the liner side, supported by a 0.5 mil PET film carrier on a 76# poly-coated kraft liner. Total thickness without liner is 5.0 mils. Peel adhesion reaches 200 oz·f/in on the air side and 157 oz·f/in on the liner side at 20-minute dwell, with static shear hold exceeding 500 hours at 1,000 grams on both faces. Continuous service temperature is 0°F to 120°F with intermittent capability to 150°F.
Key Properties
- Peel Adhesion, Air Side Adhesive, 12 IPM @ 180° 20 min dwell: 200 oz·f/in (ASTM-D3330)
- Peel Adhesion, Liner Side Adhesive, 12 IPM @ 180° 20 min dwell: 157 oz·f/in (ASTM-D3330)
- Static Shear, Both Sides (1000 g @ 73°F): 500+ hours (ASTM-D3654)
- Operating Temperature, Intermittent: 150°F
- Adhesive Thickness: 2.5 mils exposed / 2.0 mils liner / 0.5 mil PET carrier
- Total Thickness Without Liner: 5.0 mils
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Adhesive Thickness, Exposed Side | 2.5 mils | — |
| Adhesive Thickness, Liner Side | 2.0 mils | — |
| Carrier Thickness | 0.5 mils | — |
| Liner Thickness | 5.6 mils | — |
| Total Thickness Without Liner | 5.0 mils | — |
| Adhesive Type, Covered Side | Rubber | — |
| Adhesive Type, Exposed Side | Rubber | — |
| Adhesive System | Permanent Adhesive | — |
| Adhesive Side | Double Sided Adhesive | — |
| Adhesive Backing / Carrier | PET Film | — |
| Color | Clear | — |
| Liner | 76# poly-coated kraft | — |
Adhesion Properties
| Property | Value | Test Method |
| Peel Adhesion, Air Side Adhesive, 12 IPM @ 180° 20 min dwell | 200 oz·f/in | ASTM-D3330 |
| Peel Adhesion, Liner Side Adhesive, 12 IPM @ 180° 20 min dwell | 157 oz·f/in | ASTM-D3330 |
| Static Shear Test, Air Side Adhesive, 1000 grams @ 73°F | 500+ hours | ASTM-D3654 |
| Static Shear Test, Liner Side Adhesive, 1000 grams @ 73°F | 500+ hours | ASTM-D3654 |
Thermal Properties
| Property | Value | Test Method |
| Operating Temperature, Continuous | 0°F to 120°F | — |
| Operating Temperature, Intermittent | 150°F | — |
Shelf Life / Storage
| Property | Value | Test Method |
| Shelf Life | 12 months from date of shipment | — |
| Recommended Storage Conditions | 45–55% humidity, 68°F to 72°F | — |
- Bonding of polyethylene and polyurethane foams (including ether- and ester-type PU) in foam fabrication assemblies
- Gasket, seal, and trim applications in appliance, automotive, and industrial converting
- General-purpose converting on paper, metal, and low-plasticized plastic substrates
- Automotive interior component bonding requiring aggressive rubber adhesive performance
- Building and construction adhesive applications where long-term shear hold is required
Common industries: Foam converting, appliance, automotive, building and construction, industrial manufacturing.
R-242 is a self-wound double-coated rubber adhesive tape specifically formulated for foam bonding applications. The construction pairs 2.5 mils of aggressive permanent rubber adhesive on the air (exposed) side with 2.0 mils on the liner side, separated by a 0.5 mil PET film carrier. The 76# poly-coated kraft liner is characterized as “stay flat” — resistant to curl during storage and converting.
With foam-bonding rubber adhesive on both faces, the tape is particularly well-suited for adhering polyethylene and polyurethane foams (including both ether-type and ester-type polyurethanes) to a variety of secondary substrates.
Peel adhesion values are notably high: 200 oz·f/in on the air side and 157 oz·f/in on the liner side at 20-minute dwell per ASTM-D3330. Static shear hold under a 1,000-gram load at 73°F exceeds 500 hours on both faces per ASTM-D3654 — a value substantially higher than most rubber-based tapes. The PET carrier provides dimensional support for die-cutting, and the adhesive system exhibits excellent initial tack for rapid assembly-line handling.
Continuous operating temperature is 0°F to 120°F with intermittent capability to 150°F. Shelf life is 12 months from date of shipment when stored at 45–55% humidity and 68°F to 72°F.
What differentiates R-242 from other double-coated rubber tapes?
R-242 is specifically designed for foam bonding applications, with aggressive rubber adhesive explicitly identified for polyethylene and polyurethane foams — including both ether- and ester-type polyurethanes, which can be difficult for some adhesive systems. The 2.5 / 2.0 mil adhesive thickness (heavier than many double-coated rubber tapes), combined with 500+ hour static shear hold at 1,000 grams, makes it particularly suited for load-bearing foam bonds.
Why is peel adhesion important when selecting this tape?
Peel adhesion measures the tape's resistance to separation under controlled load. For R-242, the 200 oz·f/in air-side peel value at 20-minute dwell is among the highest in the double-coated rubber category, confirming aggressive bonding. The asymmetry between air side (200) and liner side (157) is typical of differential-performance rubber tapes — specifiers should orient the higher-peel face toward the more challenging substrate.
What is the service temperature range for R-242?
R-242 has a continuous operating temperature range of 0°F to 120°F, with intermittent capability to 150°F.
Is R-242 suitable for polyurethane foam bonding applications?
Yes. The TDS explicitly identifies foam fabrications — including ether and ester polyurethane foams — as a primary application, and describes the aggressive rubber adhesive as excellent for bonding to polyethylene and polyurethane foams. No specific regulatory compliance standards are listed on the TDS for this material.
How should R-242 be specified?
Specify grade (R-242), adhesive thickness per side (2.5 mils exposed / 2.0 mils liner), carrier (0.5 mil PET), liner (76# poly-coated kraft), target substrate (noting foam type if applicable), compliance requirements, dimensional tolerances, and finished format.
