The Best 4Mm Brass Ferrule of 2025 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best 4Mm Brass Ferrule of 2025. Check our ranking below.
2,965 Reviews Scanned
- Color: Brass Tone; Material: Brass; Hole Inner Dia: 4mm / 0.16 inch; Suitable for connecting 4mm(OD) copper pipe.; Total Size: 5.5 x 4.2mm / 0.22 x 0.17 inch (D*H); Packing List: 25 Pack x Brass Ferrule Fittings
- Advantages: The brass ferrule fittings are made of brass, good corrosion resistance. it is durable and reusable. 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., and it is suitable for connecting copper, brass, aluminum, or plastic tubing.
- Note: Need to confirm your pipe size before ordering.
- Color: Brass Tone; Material: Brass; Sleeves Ferrule Size: 4mmx5.5mmx4mm / 0.16"x0.22"x0.16"(ID*OD*H); Insert Fitting Size: 2mmx3.8mmx10.5mm / 0.08"x0.15"x0.41"(ID*OD*H); Suitable for connecting 4mm pipe.Packing List: 10 Pack x Brass Ferrule, 10 Pack x Insert Fitting
- Advantages: The brass ferrule fittings are made of brass, good corrosion resistance. it is durable and reusable. 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., and it is suitable for connecting copper, brass, aluminum, or plastic tubing.
- Note: Need to confirm your pipe size before ordering.
- Material: Brass; Color: Gold Tone; Fit Tube OD: 4mm / 0.16"; Ferrule Size: 6mm x 5mm / 0.24" x 0.2"(OD*H); Package List: 15 x Sleeve Ferrule
- Advantage: Made of brass material, which is corrosion resistant, high pressure resistant, durable and has a long service life.
- Instruction: This sleeve ferrule can be connected to copper, brass, aluminum, or plastic tubing. Easy to connect and install.
- Application: The sleeve ferrule is commonly used to connect lines for air, water, oil in a quick and simple way.
- NOTE: Please confirm the size before purchasing it!
- Brass material, corrosion resistant and durable.
- The operating temperature range is - 65 to + 250 degrees Fahrenheit.
- High quality connectors are manufactured to the highest standards.
- Sleeve for pipe compression joint.
- Package includes: 50 compression ferrule sleeves.
- Material: Brass; Color: Gold Tone; Fit Tube OD: 4mm / 0.16"; Ferrule Size: 6mm x 5mm / 0.24" x 0.2"(OD*H); Package List: 20 x Sleeve Ferrule
- Advantage: Made of brass material, which is corrosion resistant, high pressure resistant, durable and has a long service life.
- Instruction: This sleeve ferrule can be connected to copper, brass, aluminum, or plastic tubing. Easy to connect and install.
- Application: The sleeve ferrule is commonly used to connect lines for air, water, oil in a quick and simple way.
- NOTE: Please confirm the size before purchasing it!
- Material: Brass; Color: Gold Tone; Fit Tube OD: 4mm / 0.16"; Ferrule Size: 6mm x 5mm / 0.24" x 0.2"(OD*H); Package List: 10 x Sleeve Ferrule
- Advantage: Made of brass material, which is corrosion resistant, high pressure resistant, durable and has a long service life.
- Instruction: This sleeve ferrule can be connected to copper, brass, aluminum, or plastic tubing. Easy to connect and install.
- Application: The sleeve ferrule is commonly used to connect lines for air, water, oil in a quick and simple way.
- NOTE: Please confirm the size before purchasing it!
- Material: Brass; Color: Gold Tone; Fit Tube ID: 2mm / 0.08"; Fit Tube ID: 2.5mm / 0.1"; Fit Tube OD: 4mm / 0.16"; Thread Size: M8*1.0; Package List: 1 x Sleeve Ferrule, 1 x Insert, 1 x Nut
- Advantage: Made of brass material, which is corrosion resistant, high pressure resistant, durable and has a long service life.
- Instruction: This brass compression kit can be connected to copper, brass, aluminum, or plastic tubing. No flaring tool is required for assembly.
- Application: The brass compression is commonly used to connect lines for air, water, oil in a quick and simple way.
- NOTE: Please confirm the size before purchasing it!
- Color: Brass Tone; Material: Brass; Hole Inner Dia: 4mm / 0.16 inch; Suitable for connecting 4mm(OD) copper pipe.; Total Size: 5.5 x 4.2mm / 0.22 x 0.17 inch (D*H); Packing List: 100 Pack x Brass Ferrule Fittings
- Advantages: The brass ferrule fittings are made of brass, good corrosion resistance. it is durable and reusable. 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., and it is suitable for connecting copper, brass, aluminum, or plastic tubing.
- Note: Need to confirm your pipe size before ordering.
- Pipe Inner Diameter: 6mm; Total Length: 14mm / 0.55"; Rod Outer Diameter: 4mm / 0.16"; Rod Length: 13.5mm / 0.53"; Head Diameter: 6mm / 0.24"; 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
- Made of brass, corrosion-resistant and durable.
- High-quality connectors are manufactured according to the highest standards.
- The operating temperature range is -65 to +250 degrees Fahrenheit.
- Brass compression sleeve, used to compress pipe joints.
- Package includes: 50 compression ferrules.
Last update on 2026-01-22 / Affiliate links / Images from Amazon Product Advertising API
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FAQ:
Q: How do you use a ferrule on tubing?
A: A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. Use these sleeves with compression nuts and fittings, sometimes called bite fittings, to create a strong seal on steel tubing. They are also known as ferrules.
Q: What is the inside diameter of a ferrule?
A: Length (Decimal Inch) 1.000 Inside Diameter .690 Inside Diameter (Inch) .690 Inside Diameter (Decimal Inch) 0.6900 Type Ferrule Material Brass Length (Decimal Inch) 1.000 Inside Diameter .625 Inside Diameter (Inch) .625 Inside Diameter (Decimal Inch) 0.6250 Type Ferrule Material Brass
Q: What is the difference between brass fittings and tube fittings?
A: Made of nickel-plated brass, these tube fittings resist corrosion better than plain brass fittings. The male threaded ends connect to NPT, NPTF, BSPP, BSPT, and other universal threads, so you don’t have to bother matching exact thread types. Made of nickel-plated brass, these fittings have better corrosion resistance than unplated brass fittings.
Q: What is the difference between 316 and unplated brass?
A: Made of nickel-plated brass, these fittings have better corrosion resistance than unplated brass fittings. Often used in outdoor, damp, and washdown environments, these 316 stainless steel fittings will not corrode from water, salt, or chemicals.