can this be used for outboard boat motor to tank connection?

Be sure to measure THREE TIMES before you make your first cut ? Because too long is wasteful and too short is EVEN WORSE ! A Rubber hose is good to go with most any fuel but better gasoline with NO ETHANOL does not leave a residue inside the fuel line To prevent LEAKS start with a tight fit iat the connector fittings and stainless steel hose clamps are good to be able to take apart the fuel line to clean residue from cheap gas that eats plastic and gums up rubber removeable hose fittings make good sense

will this collapse under vacuum? 24" HG to be exact.

Yes. You need Teflon lined or nylon hose if you're trying to pull that much vacuum.

Will it work for PCV hose? Some reviews say it collapses? Does anyone know for sure that has used it for PCV venting?

This is an automotive fuel line hose with a narrow opening it will compress and deform under pressure you can park a car on it ? that would restrict air or fuel from flowing until the weight is removed then return to original shape .....PCV will crack

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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1/4 Inch (6mm) ID Fuel Line Hose 20FT NBR Rubber Push Lock Hose High Pressure 300PSI for Automotive Fuel Systems Engines…

Product ID: 771979985

Details

Brand
dojobkinb
Colour
Black
Item length
240 Inches
Item weight
0.8 Kilograms
Manufacturer
dojobkinb
Material
Synthetic

💪300PSI working pressure, 1160PSI burst

📏1/4" (6mm) ID precision fit

🔥Withstands -40°F to 257°F temps

₨1197

Duties & taxes included

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Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⛽ Fuel your ride with confidence—hose up like a pro!

PRECISION ENGINEERED FIT - Exact 1/4" (6mm) inner diameter for seamless fuel system integration.
UNMATCHED PRESSURE ENDURANCE - Handles up to 300PSI working pressure and bursts only beyond 1160PSI for ultimate reliability.
VERSATILE FUEL COMPATIBILITY - Compatible with diesel, biodiesel, gasoline, oil, grease, water, and air—one hose to rule them all.
PREMIUM NBR RUBBER DURABILITY - Crafted from high-grade NBR for superior wear resistance and long-lasting performance.
EXTREME TEMPERATURE RESILIENCE - Operates flawlessly from freezing -40°F to scorching 257°F—ready for any engine heat.

This 20FT 1/4" ID NBR rubber fuel line hose delivers professional-grade durability and performance with a 300PSI working pressure and a wide -40°F to 257°F temperature range. Engineered for automotive fuel systems, it supports multiple fuel types and ensures a snug, leak-free fit, making it the go-to choice for millennial managers who demand reliability and style under the hood.

Specifications

ASIN	B0C16T5586
Best Sellers Rank	394,604 in Automotive ( See Top 100 in Automotive ) 603 in Motorbike Fuel Lines & Hoses
Brand	dojobkinb
Colour	Black
Country of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (27)
Item Dimensions L x W	6.1L x 0.01W metres
Item Length	240 Inches
Item Weight	0.8 Kilograms
Manufacturer	dojobkinb
Material	Synthetic Rubber
Maximum Pressure	1160 Pound per Square Inch
Outside Diameter	0.49 Inches

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