Sierra Shieldsflex II Marine Water/Exhaust Hose - Available in 5/8" to 3" ID
Sierra Shieldsflex II Marine Water/Exhaust Hose - Available in 5/8" to 3" ID
Sierra Shieldsflex II is a wire-reinforced marine water and exhaust hose built for runs where bends or long lengths are required. It has a black synthetic rubber tube and cover reinforced with a wire helix embedded between plies of heavy-duty synthetic cord, keeping the hose round and kink-resistant through tight routing. It is used for engine intake, bilge pump intake and discharge, scupper lines, wet exhaust connections, toilet intake and discharge, and holding tank vent or pump-out lines aboard boats. The hose resists exhaust fumes, ozone, mild chemicals, antifreeze, and saltwater, and its cover is abrasion and odor permeation resistant. It handles a continuous temperature range of -20 F to +200 F, with intermittent spikes to +250 F, and meets SAE J2006 Type R2 standards with double the ozone resistance the standard requires. Working pressure is rated at 75 PSI with a 220 PSI burst pressure, and the bend radius is 5 times the hose's inside diameter, letting it curve through tight engine compartments and bilges without collapsing. This line is available in inside diameters from 5/8 inch up to 3 inches, in lengths from 6 1/4 feet up to 25 feet on a carton reel for the 1 1/4 inch size, so it covers everything from short exhaust jumpers to long intake or discharge runs.
Specifications
- Brand: Sierra
- Manufacturer Part Number: 16-250
- Product Type: Marine water/exhaust hose
- Material: Synthetic rubber tube and cover reinforced with wire helix between plies of HD synthetic cord
- Color: Black
- Ply: 2
- Inside Diameter (ID) Options: 5/8 inch, 3/4 inch, 1 inch, 1 1/4 inch, 2 inch, 3 inch
- Outside Diameter (OD) by Size: 5/8 inch ID: 61/64 inch OD; 3/4 inch ID: 1 1/16 inch OD; 1 inch ID: 1 5/16 inch OD; 1 1/4 inch ID: 1 19/32 inch OD; 2 inch ID: 2 13/32 inch OD; 3 inch ID: 3.44 inches OD
- Length Options: 6 1/4 feet, 10 feet, 12 1/2 feet, 25 feet (carton)
- Bend Radius: 5 x inside diameter
- Burst Pressure: 220 PSI
- Working Pressure: 75 PSI
- Temperature Range: -20 F to +200 F continuous, +250 F intermittent
- Standards Compliance: Meets SAE J2006 Type R2
- Primary Uses: Engine intake, bilge pump intake/discharge, scupper lines, wet exhaust connections, toilet intake/discharge, holding tank vent/pump-out
Sizes & Options
Choose your inside diameter first to match the fitting, thru-hull, or exhaust outlet the hose connects to, then choose the length needed for the full run, adding extra where the hose will bend. The 1 1/4 inch size is offered in both a 10 foot length and a 25 foot carton for longer runs; other sizes are offered in a single length as listed. Measure your existing hose or connection before ordering to confirm the correct inside diameter.
Frequently Asked Questions
What sizes does the Sierra Shieldsflex II hose come in? The Shieldsflex II line spans inside diameters from 5/8 inch up to 3 inches, so match it to the fitting or thru-hull it will connect to before ordering.
How do I know which length to order? Lengths run from 6 1/4 feet up to 25 feet on a carton reel for the 1 1/4 inch size. Measure the full run of the intake, exhaust, or discharge line and add extra where the hose will bend, since Shieldsflex II is designed for runs that require bends or long lengths.
What is this hose used for? Sierra Shieldsflex II is used for engine intake, bilge pump intake and discharge, scupper lines, wet exhaust connections, toilet intake and discharge, and holding tank vent or pump-out lines.
Is the hose reinforced or will it collapse on tight bends? A wire helix is embedded between plies of heavy-duty synthetic cord in Shieldsflex II, which keeps the hose round and kink-resistant even when routed through tight bends with a bend radius of 5 times its inside diameter.
What temperatures can it handle? 20 F to +200 F continuously, with intermittent spikes up to +250 F, which is the rated range for the Sierra Shieldsflex II hose.
What pressure is the hose rated for? 220 PSI burst pressure and 75 PSI working pressure are the ratings for this Shieldsflex II hose line.
What is the hose made of? A black synthetic rubber tube and cover, resistant to exhaust fumes, ozone, mild chemicals, antifreeze, and saltwater, makes up the Sierra Shieldsflex II hose.
Does this hose meet any industry standards? Yes, Shieldsflex II meets SAE J2006 Type R2 standards, with double the ozone resistance that standard requires.
What's the difference between the 6 1/4 foot and 10 foot options? They are the same hose construction cut to different lengths; choose the length based on the total run you need to cover, since Sierra offers Shieldsflex II in multiple lengths per size.
Can this hose be used for exhaust runs with bends? Yes, Shieldsflex II is specifically built for wet exhaust connections where bends or long lengths are required, unlike a rigid exhaust hose.
Is the 3 inch size available in a long length like the smaller sizes? The 3 inch Shieldsflex II hose is offered in a 6 1/4 foot length.
What color is the hose? Sierra Shieldsflex II hose has a black synthetic rubber tube and cover.