Nashua 367-17 FoilMastic Butyl Rubber Sealant Tape [UL 181B-FX listed]
Before ordering, please read the "Product Description & Specs" tab content for more information about this item.
ITEMS ON BACKORDER: *** orders can be placed for backordered items at any time
The following are expected in approximately 4 day(s):
Color/Size: SILVER 3 in. x 100 ft.
Nashua 367-17 FoilMastic Butyl Rubber Sealant Tape is a UL 181B-FX listed 2 mil dead-soft aluminum foil tape coated with 15 mils of butyl rubber mastic adhesive. Used for indoor and outdoor sealing of low, medium, and high pressure HVAC systems including sheet metal and flexible duct systems. Also to seal cracks and seams in gutters, sheet metal roofing and trailers; plus for basic sheet metal repairs.
Features & Benefits
- Aggressive butyl mastic adhesive
- Provides instant water and air-tight seal
- Resistant to moisture and solvents
- Performs to SMACNA 0.5", 1", 2", 3", 4", 6" up to 10" w.g. pressure classes and seal classes A, B, and C.
- Conformable foil backing: easy to use in tight spaces; conforms easily to round, square or odd-shaped objects.
- UL 181B-FX Listed: meets code requirements and can contribute toward requirements for EA Credit 1 (Optimize Energy Performance) under LEED®.
- Low VOC Content: can contribute toward satisfying EQ Credit 4.1 (Low Emitting Materials) under LEED®.
- Shows excellent resistance to mold growth, humidity, flame spread, smoke generation, and the effects of high temperatures.
Please note that Nashua 367-17 and Polyken 367-17 are the same product manufactured by Berry Plastics. Therefore the tape roll core may be branded with Nashua or Polyken, depending on current inventory. Made in the U.S.
Nashua 367-17 FoilMastic Butyl Rubber Sealant Tape
- Adhesive: butyl rubber How are adhesives different?
- Carrier/Backing: 2 mil aluminum foil - printed
- Release Liner: low density polyethylene (LDPE) film
- Thickness: 17 mils (carrier, adhesive) 15 mils (adhesive) 2 mils (carrier) What is mil thickness?
- Adhesion: 90 ounces per inch (to stainless steel test panel)
- Adhesion to Backing: 40 ounces per inch
- Tensile Strength: 23 pounds per inch (longitudinal)
- Service/Operating Temperature: 40°F to 200°F
- Flame Spread Index: < 25
- Smoke Development Index: < 50
- VOC Content: < 1 g/L
- Standards Met: UL 181B-FX Listed; Pressure testing validated by SMACNA Testing & Research Institute
- Core: 3" diameter
Note: Specifications are those given by manufacturers and are not tested for accuracy.
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).
Please contact us to inquire about pricing for full-cut widths (e.g. a 6 inch roll cut to exactly 152mm instead of 144mm).
367-17 Standard sizes
|ROLL SIZE||ITEM #
||ROLLS PER CASE
||PRICE PER ROLL
||PRICE PER CASE
2 in. x 100 ft.
Actual Size: 48mm x 30.5m
Single Roll (1-23 Rolls)
1 - 4 Cases (24-119 Rolls)
5 - 9 Cases (120-239 Rolls)
10+ Cases (>= 240 Rolls)
3 in. x 100 ft.
Actual Size: 72mm x 30.5m
Single Roll (1-15 Rolls)
1 - 4 Cases (16-79 Rolls)
5 - 9 Cases (80-159 Rolls)
10+ Cases (>= 160 Rolls)
Nominal Tape Widths vs Actual Widths
5% narrower than the NOMINAL width shown in inches. Examples:
Tape rolls are cut to standard tape industry metric widths of approx. 24mm per 1-inch of nominal width ordered. As a result ACTUAL tape widths are normally
- 1" Nominal width = 15/16" (24mm) Actual width
- 2" Nominal width = 1-7/8" (48mm) Actual width
- 3" Nominal width = 2-13/16" (72mm) Actual width
Note that tape rolls are NOT guaranteed to be splice-free.
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).
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.
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.
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 based adhesive formula is a skin-friendly adhesive which is commonly used on sports medicine tapes.
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