Can these be used on nylon fuel line?

As long as you use it for air. These are air line fittings not fuel line fittings

Are they DOT approved?

I do not think these are DOT approved it has to have a tube that goes inside the hose to keep it from clasping to be DOT approved

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Straight Push Connectors, 4/6/8/10/12 mm Quick Release Plastic Push to Connect Fittings Kit, 50 Pcs Air Line Fittings for 5/32 1/4 5/16 3/8 1/2 Tube

Straight Push Connectors, 4/6/8/10/12 mm Quick Release Plastic Push to Connect Fittings Kit, 50 Pcs Air Line Fittings for 5/32 1/4 5/16 3/8 1/2 Tube

Product ID: 133892919

Details

Brand
Zivisk
Color
Black Blue
Connector Type
Quick Connect
Item Weight
1 g
Item dimensions L x W x H
5.51 x 7.87 x
Material
Plastic

⚡Quick Release Push-to-Connect

🔄360° Rotatable Design

🛡️High Pressure Resistant

11231 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Push, Connect, and Power Up Your Pneumatic Game!

DURABLE SECURE - Stainless steel locking claws and NBR O-rings ensure leak-proof, long-lasting connections.
VERSATILE FIT RANGE - Includes 50 pcs covering 4/6/8/10/12 mm tubes for all your pneumatic needs.
EFFORTLESS INSTALLATION - Just push the tube in—no tools, no hassle, no downtime.
SPACE SAVING FLEXIBILITY - Compact design with 360° rotation adapts perfectly to tight, complex setups.
INDUSTRY GRADE RELIABILITY - Trusted for machinery, automotive, electronics, packaging, and medical applications.

This 50-piece kit of Zivisk Straight Push Connectors offers quick-release, tool-free installation for 4 to 12 mm tubes. Engineered with durable plastic bodies, stainless steel locking claws, and NBR O-rings, these fittings provide high pressure resistance up to 150 psi and 360° rotation for flexible, leak-proof connections across multiple industries.

Specifications

ASIN	B07PDFHB4Q
Best Sellers Rank	#279,077 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #859 in Push-to-Connect Fittings
Brand Name	Zivisk
Color	Black, Blue
Connector Type	Quick Connect
Customer Reviews	4.4 4.4 out of 5 stars (882)
Global Trade Identification Number	00742025005812
Item Dimensions	5.51 x 7.87 x 1.57 inches
Item Weight	1 g
Manufacturer	Zivisk
Manufacturer Part Number	LKPUF02
Material Type	Plastic
Model Number	LKPUF02
Number of Pieces	10
Set Name	Plastic Push-to-Connect Tube Fitting Set (50 Piece)
Size	4/6/8/10/12 mm
Thread Size	0.375 inches
Thread Type	NPT
UPC	742025005812
Unit Count	1 Count

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