Description
Nashua FSK Insulation Seaming Tape - FSK
Nashua FSK Insulation Seaming Tape – FSK is a Foil, Scrim, Kraft laminate tape with acrylic adhesive suitable for use in a wide range of temperatures. Used to seal and patch FSK duct boards and insulation. Provides an extra-strength seal to maintain vapor barrier integrity. Nashua FSK is specially designed to meet high strength, tear-resistant sealing tape requirements. Provides excellent adhesion to substrates over extreme temperature ranges (from -35°F to 260°F). Diamond pattern matches most FSK boards and blankets. 438X is UV, moisture and mold resistant and is non-solvent for less odor. It also has low VOC content and contributes toward satisfying EQ Credit 4.1 (Low Emitting Materials, Adhesives & Sealants) under LEED®. Meets flammability requirements for use in construction, aerospace and marine applications. Comes on a paper release liner. Made in the U.S.
Features & Benefits
- Foil/Scrim/Kraft Laminate Backing
- High strength and tear resistant
- UV, moisture, and mold resistant
- Synthetic Rubber Adhesive
- Non-solvent for less odor and low VOC content
- Super high tack, aggressive bond to surfaces
- Low VOC Content
- Can contribute toward satisfying EQ Credit 4.1 (Low Emitting Materials) under LEED®
Ideal For
- Vapor barrier seal for insulation facing. Sealing insulation and repairing in cooler/refrigeration applications.
Nashua #FSK Specifications
- Adhesive Type: Rubber
- Carrier / Support / Facestock: Laminate
- Gauge / Mil: 9.25 mil
- Liner Type: Paper
- Operating Temp Range: 40 to 200 °F
- Peel Strength / Adhesion to Steel: 70 oz/in
- Performance Category / Characteristics: Low VOC
- Tensile Strength: 35 lb/in
- Color(s): Custom Color
- Custom color(s): Aluminum
- Product Construction: Single-Coated Tape
- Roll Size: 2.83 in. x 50 yd. (72mm x 47.5 m)
- Country of Origin (subject to change): United States
What is a Mil Thickness?
- Thickness, AKA caliper or gauge, refers to the distance from one surface of a tape backing, or adhesive, to the other.
- 1 MIL = 1/1000 OF AN INCH
- Examples: 1/16 inch = 62.5 mils; 1/32 inch = 31.25 mils
How are adhesives different?
- HOT MELT RUBBER (SYNTHETIC): Offers the widest range of application flexibility available. Exhibits excellent processing performance whether manually or automatically applied. Has superior tensile strength, adhesion properties and holding force which ensures consistent, reliable seals. Hot melt adhesive will bond faster to a surface which is referred to as quick-grab or quick-stick. It typically has higher tack (will feel stickier to the touch) but is also softer. It has lower heat resistance, shear resistance, and sometimes UV resistance than an acrylic adhesive. NOTE: it is called hot melt because the adhesive is applied hot by the manufacturer and then hardens as it cools (you do not need to apply heat to the tape yourself).
- NATURAL RUBBER: Properties are similar to that of hot melt rubber, but natural rubber often holds where other adhesives won't (recycled fibers, dust, cold, heat and heavy loads). It provides good overall adhesion and moisture resistance.
- ACRYLIC: Offer excellent performance, especially for applications in temperatures less than 40°F and greater then 120°F. It provides excellent clarity, has high shear strength, is usually more permanent/durable even when exposed to moisture, and it ages well over extended periods in fluorescent and sunlight. Since it remains clear for the life of the application and does not yellow over time it is ideal for applications such as sealing white cartons. While it has good initial adhesion it does take 24-48 hours to cure and to achieve its maximum bond strength (has gradual adhesion buildup). Another difference between hot melt rubber and acrylic adhesive is if you fold tape over making the two adhesive sides touch the acrylic adhesive will remain attached to the carrier (e.g., paper, film) while a hot melt adhesive will stick to itself and pull off of the carrier. It is the best choice for clarity, UV resistance and aging characteristics.
- SILICONE: Is great for extreme temperature applications since silicone adhesive can work in continuous operating temperatures from -100°F to 500°F. They also exhibit good chemical resistance, retain electrical properties, and remove cleanly with little or no residue.
- ZINC OXIDE: Zinc oxide based adhesive formula is a skin-friendly adhesive which is commonly used on sports medicine tapes.
Restrictions and Compliance
- ROLL SIZES/WIDTHS
- Please note that tape rolls are NOT guaranteed to be splice-free. Tape rolls are typically cut to standard tape industry metric-cut sizes - or approx 5% narrower than the nominal size (i.e. 24mm per 1-inch of nominal width ordered).
- Note: Specifications are those given by manufacturers and are not tested for accuracy.
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