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POM (ACETAL) TUBES

Made from semi-crystalline engineering thermoplastic polymerized formaldehyde, POM (Polyoxymethylene) tubes are hollow, cylindrical, high-performance plastic profiles. They are perfect for fluid transfer, structural, and wear-resistant applications because they combine high mechanical strength, dimensional stability, and low friction. They are also referred to as acetal or polyacetal tubes. These tubes, which can be made in a range of diameters, wall thicknesses, and lengths and are machinable into custom parts like bushings, rollers, and fluid-handling components, are available as homopolymer (like Delrin®) or copolymer (like Celcon®).

What are the key features of POM tubes?

-Excellent Wear and Abrasion Resistance: Water absorption is less than 0.3%, making it perfect for damp or humid conditions. increases durability in applications with sliding or moving parts. 

-Hollow Structure: Reduces weight without sacrificing strength. 

-Simple Machinability: Easily drilled, cut, or machined to exact specifications. 

-High Stiffness & Strength: Able to bear heavy loads and strains. 

-Electrical insulation has strong dielectric qualities and is non-conductive. 

-Low Friction: Provides smooth exterior and interior surfaces, perfect for moving parts and fluid flow. 

-Adaptable Finishes: Offered in natural, tinted, and filled versions to meet various performance and environmental requirements. 

-Outstanding Dimensional Stability: Low moisture absorption causes very little expansion or contraction. 

-FDA-compliant options: specially made grades appropriate for use in food and medicine.

-Chemical Resistance: Capable of withstanding exposure to a variety of chemicals, including fuels, oils, and solvents. 

How many types of POM tubes are there?

1、FDA-compliant tubes are produced in accordance with food-grade and medical standards, guaranteeing safety and hygienic conditions. 

2、Natural (Unfilled) Acetal Tubes: Typical POM tubes that combine strength and ease of machining. 

3、Colored Acetal Tubes: Available in a variety of colors to indicate various roles within a system or for aesthetic reasons.

4、To improve strength, stiffness, and dimensional stability, glass-filled acetal tubes are reinforced with 20% to 30% glass fibers.

5、Carbon-Filled Acetal Tubes: Use carbon fibers to improve wear resistance and reduce friction. 

Technical Specifications:

1、 Density: 1.41–1.42 g/cm³, with minor grade-to-grade variations 

2、 Tensile strength: 50–60 MPa for copolymers and 60–70 MPa for homopolymers. 

3、Depending on grades, the operating temperature ranges from -40°C to 100°C. 

4、 100–120 MPa is the compressive strength. 

5、 Shore D Hardness: ~M80 (Copolymer), ~M85 (Homopolymer) 

6、 Flexural Strength: approximately 110–125 MPa 

7、 In dry conditions, the coefficient of friction is approximately 0.25 to 0.3. 8、 Melting points for homopolymers and copolymers are 175°C and 165°C, respectively. 

9、 Moisture Absorption: Low (~0.2-0.3%).

What are the advantages and benefits of POM tubes?

1、 Temperature Resilience: Functions well in a wide variety of temperatures. 

2、 Lightweight Design: The hollow shape lowers weight without compromising durability. 

3、 Versatile Machining: High-precision components may be produced with ease. 

4、 Low Friction Surface: Perfect for sliding/rotating parts or fluid transmission applications. 

5、 Customization: To suit certain application requirements, it is available in a variety of formats (such as filled or colored). 

6、 High Durability: The service life is extended by exceptional wear and abrasion resistance. 

7、 Hygienic Options: Non-porous surfaces prevent the formation of microorganisms, which is essential for the food and medical industries. 

8、 Chemical and Solvent Resistance: Preserves functionality in challenging industrial settings (such as chemical plants and marine environments). 

9、 Cost-effectiveness: Less expensive to machine than metal tube.

What applications are POM tubes used for?

1、Aerospace: Precision aerospace components use high-strength, lightweight tubing. 

2、Fluid transfer and piping are used in systems that need to have chemical resistance and smooth flow. Water filtration parts, fuel lines, and hydraulic/pneumatic systems. 

3、Electrical insulation provides superior insulating qualities for electrical components, including cable guides and insulating sleeves. 

4、Automotive Components: Used in conveyor rollers, gears, bushings, bearings, and clutch parts. 

5、Custom Fabrication: Ideal for applications or prototypes that need precise measurements and complex machining.

6、Rollers, seals, and custom-machined pieces are examples of industrial machinery. 

7、Medical and food processing: FDA-compliant tubes are perfect for hygienic and food-contact applications like medicine delivery systems, IV connectors, and endoscope parts. 

How to store and handle POM tubes?

-Handling: 

Take caution while handling tubes meant for precise applications to preserve surface integrity. 

When installing or machining, wear gloves to prevent contamination and possible surface damage. 

-Storage: 

Keep out of direct sunlight and high humidity in a cool, dry location (<30°C). 

To avoid dust, scratches, or physical damage, use sealed containers or protective packaging. 

-Shelf Life: 

 Acetal tubes retain their qualities for a long time when stored properly. It is usually advised to utilize them within a few years of purchase for best results.Frequently Asked Questions

Question 1: What is the main purpose of acetal tubes?

Answer: Because of their strength, low friction, and chemical resistance, acetal tubes are utilized in many different applications, including as fluid transfer, automotive components, industrial machinery, and custom-machined parts.

Question 2: Can pressurized fluids be handled by POM tubes?

Answer: Yes, however material quality, temperature, and wall thickness all affect pressure rating. Don't go over 85°C for homopolymers or 100°C for copolymers.

Question 3: Can POM tubes be sterilized?

Answer: Copolymer tubes can withstand gamma radiation and autoclaving (121°C, 15–20 psi).

Question 4: Which industries stand to gain from acetal tubes?

Answer: Acetal tubes are widely used in industries like automotive, aerospace, medical, food processing, industrial machinery, and electronics because of their strength, light weight, and chemical resistance.

Question 5: What are the advantages of employing filled versions, such as acetal tubes filled with carbon or glass?

Answer: The mechanical characteristics of filled acetal tubes are improved. Carbon-filled tubes are perfect for high-performance applications because they lower friction and increase wear resistance, while glass-filled tubes offer greater stiffness and less thermal expansion.

Question 6: What distinguishes acetal tubes from acetal rods?

Answer: The main distinction between them is that acetal rods are solid, while acetal tubes are hollow, providing a weight reduction without sacrificing strength. Because of this, tubes are especially helpful in situations where internal passages (for fluids or wires) and weight savings are advantageous.