400 South Pearl Street, Albany, NY 12202
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Special Gas Vent System for Category II, III & IV Heating Appliances

NEW FasNSeal Flex: The only UL 1738 listed high-efficiency Flexible Vent Component. Click here for more information.

Set the standard in 1997 as the first vent system with a built-in gasket and locking band. FasNSeal is designed for high efficiency gas heaters where cool flue gases are vented under pressure. Available in 3" through 24" diameters.

FasNSeal has an advanced design that offers the most professional venting method for high efficiency gas heaters. It is unparalleled in its ease of installation, precision fit and performance.

With FasNSeal you get a simple, gas and water-tight system that safely guides poisonous flue gases - including carbon monoxide - away from the heat source and out of your customer's home.

NO SILICONE is needed to install the FasNSeal Vent System for Category II, III & IV Heating Appliances.

Arrow Material Selection and Experience Counts
Arrow AL29-4C Technical Data Sheet
Arrow Material Thickness
Arrow Clearance to Combustibles
Arrow FasNSeal Applications
Arrow Built-in Gaskets and Mechanical Locking Bands
Arrow Built For Performance
Arrow Adjustable Vent Lengths
Arrow FasNSeal Flex
Arrow Engineering Services
Arrow Warranty
Arrow FasNSeal Flex Info Packet
FasNSeal
Arrow

See the Complete FasNSeal Catalog (PDF)

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Each vent length and component features a built-in mechanical locking band and gasket. Parts are simply pushed together to a stop bead, which renders the joints air and water-tight. By tightening their integrated mechanical locking band, parts are fastened together in seconds. FasNSeal can be taken apart and reassembled in minutes, making inspection, maintenance or rerouting of FasNSeal systems a breeze. Should a part or gasket ever become damaged, replacement takes less than five minutes and the integrity of the system is not compromised!

FasNSeal has been tested and is listed by Underwriters Laboratories, Inc. to UL 1738 and ULC-S636-95. ProTech Systems own experience with AL29-4C dates back to 1986, when VENTINOXVG for gas appliances was introduced as the first chimney lining system made from this alloy. VENTINOX provides safe venting in thousands of American homes today and features a lifetime warranty.

Material Selection and Experience Counts

FasNSeal is manufactured from AL29-4C, a superferritic stainless steel designed for extreme resistance to chloride ion pitting, crevice corrosion and stress corrosion cracking, as well as general corrosion in oxidizing and moderately reducing environments. AL29-4C is an ideal choice for resisting deleterious effects of corrosive condensates created by partially or fully condensing natural gas and propane fired heating appliances.

The Canadian Gas Research Institute found that test results proved AL29-4C to be one of two most corrosion resistant alloys of twenty candidate stainless steels evaluated for resistance to chloride-induced corrosion in condensing and partially condensing gas-fired appliances.

Material Thickness

3" - 7" (76.2mm - 117.8) .016" (.4mm)
8" - 12" (203.2mm - 304.8) .019" (.5mm)
14" - 16" (355.6mm - 406.4) .024" (.6mm)

Clearance to Combustibles

Rated Operating Temperature, °F Minimum Clearance Enclosed Minimum Clearance Unenclosed
Horizontal Vertical Horizontal Vertical
3" - 4" 300°F Side: 8"
Top: 12"
Bottom: 4"
4" 1" 1"
480°F 4" 3" 1"
5" - 16" 300°F Noncombustible Enclosure 3" 3"
480°F 3" 3"

FasNSeal Applications

FasNSeal Applications FasNSeal is a Special Gas Vent and Gas Vent Connector, made from AL29-4C stainless steel and designed for use on natural gas or propane-fired appliances listed as Category II, III and IV or in Canada Type BH Gas Vent Systems having a rated operating temperature of 480 degrees F and maximum positive pressure of 6 water column.

FasNSeal provides horizontal or vertical venting for high efficiency gas boilers, furnaces, booster heaters, pool heaters, water heaters, unit heaters or tankless water heaters.

Vertical Installation Horizontal Installation Inside Masonry Chimney
FasNSeal Vertical Installation FasNSeal Horizontal Installation FasNSeal Inside Masonry Chimney

FasNSeal may also be used as a vent for Category I, natural gas or propane-fired heaters. FasNSeal must be sized according to the heating appliance manufacturers instructions, NFPA 211, NFPA 54 and any other relevant local building codes and regulations (see installation instructions for details!)

Built-in Gaskets and Mechanical Locking Bands

Each vent length and component features a built-in mechanical locking band and gasket. Parts are simply pushed together to a stop bead, which renders the joints air and water-tight. By tightening the integrated mechanical locking band, parts are fastened together in seconds. FasNSeal can be taken apart and reassembled in minutes, making inspection, maintenance or rerouting of FasNSeal systems a breeze. Should a part or gasket ever become damaged, replacement takes less than five minutes and the integrity of the system is not compromised!

Clean and Professional Clean and Professional
FasNSeal looks clean and professional after installation.

FasNSeal is Built for Performance

Proven in our single wall system since 1997, all FasNSeal products feature a smooth weld seam inside and out that is completely shielded during the TIG welding process. Contamination or molecular changes in the weld seam are avoided; no fillers are used in the welding process. Tube ends are formed under the most stringent quality standards to guarantee a perfect fit every time and to avoid built-in stress points or weak areas.

Adjustable Vent Lengths

Adjustable Lengths Adjustable vent lengths featured in our Wall Thimbles allow for built-in horizontal adjust-ability without the need for cutting pipe. Our standard Adjustable Vent Length allows 4" to 12" of vertical adjustment, making pitching FasNSeal to properly drain condensate simple. Connecting FasNSeal to a heater is done efficiently with one of our many Adapters approved by heating appliance manufacturers. Heating equipment can be fired up immediately upon completing a FasNSeal installation, as no cure time or cleanup is required. PTS listened to the installer and came up with the perfect way to join FasNSeal parts. No cutting, no exterior clamps, no joints to wipe with alcohol, no rings, no tabs, no mess to clean. Adjustable Lengths

Engineering Services
See our Engineering Services Flyer #1248

For FasNSeal Single Wall and Double Wall Submittal Drawings and Bill of Material
Submit your specifications on a submittal request work sheet along with your layout and PTS will supply comprehensive submittal drawings and a complete bill of materials within 48 business hours. Unless your specs are changed more than once, this service is provided free of charge. Fax request to (518) 462.1201 or email sales@duravent.com.

Design Services for Heating Appliance OEM's
Submit your drawings and sketches for a custom designed female FasNSeal Adapter for the breach of your heating appliance, Appliance Adapter or custom components (Tees, Elbows, Vent Lengths, etc.). Fax request to 518.462.1201 or email sales@duravent.com.

FasNSeal Flex