DuraSeal™ Laboratory Sealing Film
Durable, heat-resistant, solvent-proof and chemically resistant
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No one can get very far in a laboratory without using at least
some
laboratory sealing film. For many years the "standard" in the laboratory was
Parafilm
®
M
but for many applications, DuraSeal™, with its higher temperature characteristics, might be superior.
Summary of advantages of DuraSeal laboratory sealing film:
Heat resistant and microwave compatible
Withstands temperatures to 100 °C, e.g. boiling water.
Chemically resistant
Resists essentially all solvents and caustic agents.
Tear resistant
Film can stretch 500-800% before breaking or tearing.
Clings
Film can cling to itself following stretching.
Tight sealing
Forms an air tight barrier
Description:
DuraSeal™ is a new, durable heat and solvent-resistant stretch film that claims substantial advantages over common laboratory stretch films. Its superior heat-resistant feature allows for containers to be incubated in boiling water baths without suffering the characteristic "melting" of paraffin-based alternatives. Because DuraSeal™ is polyethylene based and free of any adhesives, it resists essentially all organic solvents and caustic agents, e. g. aliphatic, aromatic and chlorinated solvents as well as strong acids and bases. The film can be elongated 500-800% before breakage, minimizing the incidence of film tearing during stretch sealing. DuraSeal is easy to use. There is no interleaf paper to strip away. Just stretch the film symmetrically over a container opening and the film contracts inwardly around the opening or neck of the container to provide a drum tight water proof stretch seal. The film clings to itself, especially after stretching. The free edges of the film may be stretched around the container to secure the edges.
Cutting of DuraSeal laboratory sealing film:
A special cutting scissors is available, which we highly recommend for the cutting of DuraSeal.
Direct comparison of DuraSeal vs. Parafilm
®
:
DuraSeal
Parafilm
Softens above 100°C
Softens above about 68°C
Resists essentially all solvents
Dissolves in carbon tetrachloride,
chloroform, phenol, benzene, hexane, etc.
Compatible with solution microwaving
Not compatible with solution microwaving
Resists breakage
More susceptible to breaking and tearing
Transparent
Translucent only
No interleaf paper
Interleaf paper must be removed
Permeability Information:
Oxygen: 125cc/100in
2
/24 hrs at 23°C
Carbon Dioxide: 1300cc/100in
2
/24 hrs at 23°C
Water Vapor: 1.0g/100in
2
/24 hrs at 38°C and 90% R.H.
Available DuraSeal™ products:
Size
SPI #
Each
10+, Each
In Stock
Beakers, flasks, etc.
DuraSeal 2"x500 ft
(51 mm x 152.4 m), per roll
01761-AB
$ 37.35
$ 33.62
Yes
DuraSeal 4"x250 ft
(101 mm x 76.2 m), per roll
01762-AB
45.50
40.95
Yes
DuraSeal 4"x500 ft
(101 mm x 152.4 m), per roll
01763-AB
68.80
61.92
Yes
DuraSeal 5"x150 ft
(127 mm x 45.7 m), per roll
01764-AB
45.50
40.95
Yes
Test tubes
DuraSeal 1"x150 ft
(25.4 mm x 45.7 m), per roll
01760-AB
22.15
19.94
Yes
Special cutting shears
DuraSharp Shears, each
01765-AB
12.75
11.48
Yes
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Monday March 22, 2010
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