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Updated: 06 Apr 2026

10 Best Compression Fitting Tube Inserts

#1 Best Pick
Siptenk 100PCS Brass Compression Tube Inserts Tube Support Compression Sleeve Fitting for OD 3/16"

Siptenk 100PCS Brass Compression Tube Inserts Tube Support Compression Sleeve Fitting for OD 3/16"

Brand: Siptenk
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  • SIPTENK BRASS COMPRESSION INSERTS FOR OD TUBE: 3/16" 100pcs.
  • HIGH-QUALITY BRASS MATERIAL: Siptenk brass compression tube fittings are made of brass, which is strong and hard, with better corrosion and rust resistance and pressure resistance, so you can use the brass fittings for a long time.
  • PRECISE & EXCELLENT WORKMANSHIP: Precise and diverse hose compression fitting sizes, with fine manufacturing process for smooth surface without burrs, ensure users have a good purchase experience and meet different need.
  • EASY TO INSTALL: The brass brass compression fittings, used with plastic and copper tubing, can connect lines for air, water, fuel, oil and inert gases, while inserts are mainly used to insert into hoses quickly and easily.
  • WIDE ALLPICATION: The compression inserts are widely used in hydraulic and pneumatic systems, connecting lines for air, water, fuel, oil and inert gases, such as connecting copper, brass, aluminum or plastic pipes.
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#2 Best Value
Siptenk 80PCS Brass Compression Tube Inserts Tube Support Compression Sleeve Fitting for OD 5/16"

Siptenk 80PCS Brass Compression Tube Inserts Tube Support Compression Sleeve Fitting for OD 5/16"

Brand: Siptenk
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  • SIPTENK BRASS COMPRESSION INSERTS FOR OD TUBE: 5/16" 80pcs.
  • HIGH-QUALITY BRASS MATERIAL: Siptenk brass compression tube fittings are made of brass, which is strong and hard, with better corrosion and rust resistance and pressure resistance, so you can use the brass fittings for a long time.
  • PRECISE & EXCELLENT WORKMANSHIP: Precise and diverse hose compression fitting sizes, with fine manufacturing process for smooth surface without burrs, ensure users have a good purchase experience and meet different need.
  • EASY TO INSTALL: The brass brass compression fittings, used with plastic and copper tubing, can connect lines for air, water, fuel, oil and inert gases, while inserts are mainly used to insert into hoses quickly and easily.
  • WIDE ALLPICATION: The compression inserts are widely used in hydraulic and pneumatic systems, connecting lines for air, water, fuel, oil and inert gases, such as connecting copper, brass, aluminum or plastic pipes.
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#3 Budget Pick
Siptenk 100PCS Brass Compression Tube Inserts Tube Support Compression Sleeve Fitting for OD 1/8"

Siptenk 100PCS Brass Compression Tube Inserts Tube Support Compression Sleeve Fitting for OD 1/8"

Brand: Siptenk
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  • SIPTENK BRASS COMPRESSION INSERTS FOR OD TUBE: 1/8" 100pcs.
  • HIGH-QUALITY BRASS MATERIAL: Siptenk brass compression tube fittings are made of brass, which is strong and hard, with better corrosion and rust resistance and pressure resistance, so you can use the brass fittings for a long time.
  • PRECISE & EXCELLENT WORKMANSHIP: Precise and diverse hose compression fitting sizes, with fine manufacturing process for smooth surface without burrs, ensure users have a good purchase experience and meet different need.
  • EASY TO INSTALL: The brass brass compression fittings, used with plastic and copper tubing, can connect lines for air, water, fuel, oil and inert gases, while inserts are mainly used to insert into hoses quickly and easily.
  • WIDE ALLPICATION: The compression inserts are widely used in hydraulic and pneumatic systems, connecting lines for air, water, fuel, oil and inert gases, such as connecting copper, brass, aluminum or plastic pipes.
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#4 Top Choice
uxcell Brass Compression Insert for 1/4" Inch OD Tube, 60 Pack Insert Tube Support Compression Fitting Assortment Kit for Water Oil Air Pipe

uxcell Brass Compression Insert for 1/4" Inch OD Tube, 60 Pack Insert Tube Support Compression Fitting Assortment Kit for Water Oil Air Pipe

Brand: uxcell
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  • Specification: Color: Gold Tone; Material: Brass; Suitable for Tube OD: 6.5 mm/1/4 Inch; Height: 13 mm/0.51 Inch; Size: 4.2 x 6.5 mm/0.17 x 0.26 Inch(OD*Base Dia); Package List: 60 Pcs x Brass Compression Insert
  • Advantage: The brass compression insert is made of durable and reusable brass material which is strong and not easy to wear, has corrosion resistance, and high-pressure resistance, and can be used for a long time. It is suitable for different types of environments; The surface is smooth and burr-free, the bite is tight, and it is not easy to get stuck or leak oil, providing a secure connection for hose connections.
  • Instruction: Easy to use, directly insert a hose with a suitable diameter into the brass tube support, and make a tube connection with the compression fittings.
  • Application: Brass compression inserts are suitable for compression connections for plastic hoses, nylon hoses, etc. They are widely used in hydraulic and pneumatic systems, HVAC, humidifiers, and so on.
  • NOTE: Please confirm the size before purchasing it.
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#5 Popular Choice
uxcell 10Pcs Fit for 2mm(1/16") Tube ID Brass Compression Fitting, Insert Tube Support Compression Sleeve Fitting, Sleeve Ferrules for Water Oil Air Pipe

uxcell 10Pcs Fit for 2mm(1/16") Tube ID Brass Compression Fitting, Insert Tube Support Compression Sleeve Fitting, Sleeve Ferrules for Water Oil Air Pipe

Brand: uxcell
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  • Material: Brass; Colour: Yellow; Pipe Inner Diameter: 1/8mm; Total Length: 10.5 mm / 0.41"; Rod Outer Diameter: 2 mm / 0.08"; Rod Length: 10 mm / 0.39"; Head Diameter: 3 mm / 0.12"; Package Content: 10Pcs x Tube ID Brass Compression Fitting
  • Material: Our tube compression fittings are made of brass, which is durable, pressure-resistant, wear-resistant, high hardness, corrosion-resistant, and can be used for a long time
  • Design: This compression sleeve fitting has a simple structure, fine workmanship, and a smooth surface without burrs. Precision processing, tight bite, good sealing, not easy to leak or loosen, can provide a firm connection for the pipeline
  • Easy To Use: Easy to install, no professional tools are required, the connection can be completed with a simple crimping operation; high stability, suitable for a variety of environments; please confirm the size before purchasing
  • Wide Application: These sleeve ferrules can be widely used to connect pipes for air, water, fuel, oil and inert gas, suitable for plastic hoses, nylon hoses, copper pipes, and aluminium pipes
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#6 Top Pick
uxcell 1/4" 5/16" 3/8" 1/2" Brass Compression Fittings,80Pcs Compression Insert Tube Fitting for Connecting Air, Fuel, Water, Oil and Inert Gases Lines

uxcell 1/4" 5/16" 3/8" 1/2" Brass Compression Fittings,80Pcs Compression Insert Tube Fitting for Connecting Air, Fuel, Water, Oil and Inert Gases Lines

Brand: uxcell
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  • Color: Brass, Material: Brass, Outer Diameter:1/4" , 5/16" , 3/8" , 1/2" Inner Diameter:3.7 ,5.4 ,5.8 ,8.7mm/0.15",0.21",0.23",0.34", Tube Diameter:4 ,5.8 ,6.3 ,9.4mm/0.16",0.23",0.25",0.37", Total Length:13 ,14 ,14 ,17mm/0.51",0.55",0.55",0.67", Packing List:80x Brass Compression Inserts
  • Advantages: Made of brass material, durable, corrosion-resistant and not easy to rust, and can be used for a long time. These sleeves have a smooth surface and can be re-assembled many times to ensure a tight fit without affecting the sealing. The product quantity is sufficient to meet your replacement or spare needs and save costs.
  • Instruction: Easy to use, this brass compression kit can be connected to copper, brass, aluminum or plastic pipes. No tools are required for assembly, clean the pipe connector first, then install and tighten by hand or wrench.
  • Use: You can use these brass insert ferrules in a variety of areas, mainly for plumbing and light industrial applications, as well as some home repairs; their wide range of use capabilities makes them a solution to meet various compression fitting needs.
  • Note: Before purchasing, please confirm the pipe thread size.
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#7 Top Pick
uxcell 2mm Tube Brass Compression Fittings, 15 Pack Insert Tube Support Compression Sleeve Fitting

uxcell 2mm Tube Brass Compression Fittings, 15 Pack Insert Tube Support Compression Sleeve Fitting

Brand: uxcell
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  • Material: Brass; Color: Gold Tone; Fit Tube ID: 2mm / 0.08"; Total Size: 4mm x 10.5mm / 0.16" x 0.41"(OD*H); Package List: 15 x Brass Compression Fittings
  • Advantage: Made of brass material, which is corrosion resistant, high pressure resistant, durable and has a long service life.
  • Instruction: This insert sleeve can be connected to copper, brass, aluminum, or plastic tubing. No flaring tool is required for assembly.
  • Application: The insert sleeve is commonly used to connect lines for air, water, oil in a quick and simple way.
  • NOTE: Please confirm the size before purchasing it!
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#8 Top Pick
uxcell Brass Compression Sleeves Ferrules for 1/4 Inch OD Hose Tube, 40 Pack Brass Ferrule Brass Compression Insert Fitting Assortment Kit for Air Water Gas Pipe

uxcell Brass Compression Sleeves Ferrules for 1/4 Inch OD Hose Tube, 40 Pack Brass Ferrule Brass Compression Insert Fitting Assortment Kit for Air Water Gas Pipe

Brand: uxcell
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  • Specification: Color: Brass Tone; Material: Brass; Sleeves Ferrule Size: 6.6 x 8 x 6 mm/0.26 x 0.31 x 0.24 Inch(ID*OD*H); Insert Fitting Size: 4.2 x 6 x 13 mm/0.17 x 0.24 x 0.51 Inch(OD*Base Dia*H); Suitable for connecting 1/4 Inch OD hose tube.; Packing List: 20 Pack x Brass Ferrule, 20 Pack x Insert Fitting
  • Advantages: The brass compression insert is made of durable and reusable brass material which is strong and not easy to wear, has corrosion resistance, and high-pressure resistance, and can be used for a long time. It is suitable for different types of environments; These ferrules have a smooth surface and provide a good seal, providing a secure connection for pipe connections.
  • Instruction: Insert the copper pipe with the appropriate diameter into the sleeve, then fix it to pipe connectors with nuts.
  • Application: This brass compression sleeves ferrule is widely used in pipe connection for hydraulic and pneumatic systems, HVAC, humidifiers, etc., suitable for connecting plastic tubing.
  • NOTE: Please confirm the pipe size before purchasing.
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#9 Top Pick
LT Easiyl Pack of 60 Brass Compression Sleeves Ferrules 4mm Tube OD Brass Ferrule Fitting and Hose Insert Kit for Air Water Gas Pipe Suitable for Connecting 4mm Pipe

LT Easiyl Pack of 60 Brass Compression Sleeves Ferrules 4mm Tube OD Brass Ferrule Fitting and Hose Insert Kit for Air Water Gas Pipe Suitable for Connecting 4mm Pipe

Brand: LT Easiyl
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  • Perfect Fit: Designed for 4mm OD tubes, these ferrules provide a tight, secure connection, ensuring a leak-free seal for your piping system. Sleeves Ferrule Size: 4mmx5.9mmx4.2mm; Insert Fitting Size: 2.5mmx3.7mmx10.4mm.
  • Wide Compatibility: Ideal for a variety of applications including plumbing, air systems, and gas pipelines, suitable for both residential and commercial use.
  • Material: Made from reliable brass, these compression sleeves offer reliable performance for air, water, and gas pipe connections.
  • Easy Installation: These compression fittings are simple to install with standard tools, making them an excellent choice for DIYers and professionals.
  • Packing List: 30 Pack Brass Ferrule, 30 Pack Insert Fitting.
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#10 Top Pick
ECSiNG 100pcs Brass Compression Insert Suitable for 1/8inch Tube Outer Diameter for Water Oil Air Pipe

ECSiNG 100pcs Brass Compression Insert Suitable for 1/8inch Tube Outer Diameter for Water Oil Air Pipe

Brand: ECSiNG
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  • Product size: The product is 10.5mm long, the base diameter is 3mm, the outer diameter is 2mm, and the Outer Diameter of the applicable tube is 2mm. Manual measurements, please allow slight errors.
  • Applicability: The product is used to quickly and easily connect air, water and oil pipelines; suitable for connecting and fixing nylon tubes, copper tubes, aluminum pipe joints, etc., commonly used in fuel and gas systems.
  • Product material: The product is specially designed and made of brass, with a long service life and not easy to damage.
  • Easy to install: It can be directly replaced without adjustment, with perfect compatibility and high reliability.
  • Product list: Product include a total of 100pcs 1/8 Brass Compression Insert, which can completely meet your daily use needs and replacement.
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