Page 10 - Design Criteria.qxd

® 11 Welcome to the Next Generation of Sealing Technology
PTFE Products
Fluoroseal
Fluoroseal is an expanded, pure PTFE sealing material. Supplied in the form of a
highly conformable, flexible strip, it is ideal for use in applications involving non-
standard flanges. This material offers both versatility and convenience and is there-
fore often used as a backup sealing option in situations where conventional gaskets
are not immediately available.
Flexitallic Fluoroseal has outstanding chemical resistance and is inherently
clean, making the product particularly suitable for sealing against aggressive media
or in situations where feedstock contamination may be of concern.
The presence of an adhesive backed strip simplifies installation in large or
complex flange applications, such as air conveying and solvent recovery systems.
Sealant Thickness Sealant Width Compressed Thickness Compressed Width
1.5mm (1/16”) 3mm (1/8”) 0.3mm (0.010”) 6mm (0.24”)
2.0mm (3/32”) 5mm (3/16”) 0.4mm (0.015”) 10mm (0.40”)
2.5mm (3/32”) 7mm (1/4”) 0.45mm (0.018”) 13mm (0.50”)
4.0mm (5/32”) 10mm (3/8”) 0.55mm (0.022”) 20mm (0.80”)
5.0mm (3/16” 12.5mm (1/2”) 0.8mm (0.031”) 24mm (0.95”)
5.0mm (3/16”) 14mm (9/16”) 0.8mm (0.031”) 22mm (1.00”)
6.0mm (7/32”) 17mm (11/16”) 1.0mm (0.039”) 29mm (1.14”)
6.0mm (1/4”) 19mm (3/4”) 1.25mm (0.049”) 34mm (1.34”)
6.0mm (1/4”) 25mm (1”) 1.25mm (0.049”) 45mm (1.77”)
Fluoroseal is suitable for cryogenic application, and for temperatures up to 260°C (500°F).
Typical applications:
Hydraulic systems, pneumatic systems, water supply systems, ventilation ducts, fan housing,
fume ducts, engine case doors etc.
Widths and Thicknesses of Fluoroseal At Full Compression
Gas Tight (lbf/in.)
Width (in.) Water Tight (lbf/in.)
Smooth Rough
Flanges Flanges
1/8 500 - 280
3/16 1260 - 280
1/4 1260 2520 390
3/8 1540 2800 390
1/2 1540 2940 390
5/8 1680 2940 420
3/4 1960 3360 420
Gas tight is based on compressed air at 600 psi.
Water tight is based on water at 30 psi.
Bolt Forces per Unit Length of Seal
Width (in.) Spool Length (ft.)
1/8 100
3/16 75
1/4 50
3/8 25
1/2 15
5/8 15
3/4 15
1 15
Fluoroseal
Universal Joint Sealant
Nominal Sizes