Description

Poly(Oxymethylene-Co-1,3-Dioxepane) is a high-performance engineering thermoplastic copolymer, also known as polyacetal or POM copolymer. This material is engineered to deliver an exceptional balance of mechanical strength, dimensional stability, and chemical resistance, making it a critical component in precision-molded parts. It is essential for manufacturers across the automotive, consumer electronics, and industrial equipment sectors who require durable, low-friction, and reliable polymer components. The product is supplied under strict quality control to ensure batch-to-batch consistency for demanding applications.

Application

This versatile copolymer is specified for high-performance applications where metal replacement, wear resistance, and precision are paramount.

• Precision Gears and Bearings: Used in automotive window regulators, seat adjusters, and small appliance gear trains due to its excellent fatigue endurance and low friction.
• Fluid Handling Components: Ideal for pump housings, valve bodies, and meter parts in fuel systems, plumbing, and chemical processing equipment, offering resistance to hydrocarbons and hot water.
• Consumer Electronics and Fasteners: Employed in connectors, latches, zippers, and aerosol spray components where high stiffness, creep resistance, and smooth tactile feel are required.
• Medical Device Components: Suitable for parts requiring repeated sterilization, such as inhaler mechanisms and surgical instrument housings, owing to its biocompatibility grades and stability.
• Industrial and Consumer Hardware: Used in high-stress components like rollers, conveyor parts, locks, and kitchen utensil handles where durability and dimensional accuracy are critical.

Basic Information

Product Name	Poly(Oxymethylene-Co-1,3-Dioxepane)
CAS No.	25214-85-1
Molecular Formula	(C2H4O)x(C5H10O2)y
Molecular Weight	Varies by copolymer ratio
Synonyms	Polyoxymethylene Copolymer; POM Copolymer; Acetal Copolymer; Polyacetal Copolymer; Polyformaldehyde Copolymer; 1,3-Dioxepane, polymer with formaldehyde; Oxymethylene copolymer
EINECS	Contact for details

Quality Control

Our Poly(Oxymethylene-Co-1,3-Dioxepane) is manufactured under a stringent quality management system. Each batch is tested against rigorous specifications for key parameters such as melt flow rate, thermal stability, and mechanical properties to ensure it meets the high standards required for engineering applications. Certificates of Analysis (COA) detailing lot-specific results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids, strong bases, and oxidizing agents. This material is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption, which can affect processing and final properties.

Specification

Item	Specification
Appearance	White to off-white granules or pellets
Melting Point (DSC)	162 - 175 °C
Melt Flow Rate (190°C/2.16 kg)	2.5 - 45 g/10 min (Grade dependent)
Tensile Strength (Yield)	60 - 70 MPa
Flexural Modulus	2500 - 3000 MPa
Moisture Content	< 0.2 %
Ash Content	< 0.05 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.