 Acetal Index
Acetal provides high strength and stiffness coupled with enhanced dimensional stability and ease of machining. As a semi-crystalline material, acetal is also characterised by a low coefficient of friction and good wear properties, especially in wet environments.
Main advantages of our acetal sheet, rod and tube are: - Acetal has high mechanical strength, stiffness, hardness and toughness
- Excellent resilience
- Acetal has good creep resistance
- Acetal has high impact strength, even at low temperatures
- Acetal has very good dimensional stability (low water absorption)
- Acetal has good sliding properties and wear resistance
- Acetal is excellent for machining
- Acetal has good electrical insulating and dielectric properties
- Acetal is physiologically inert (suitable for food contact)
The main disadvantage of acetal is that it is not self-extinguishing.
Because acetal absorbs minimal amounts of moisture, its physical properties remain constant in a variety of environments. Low moisture absorption results in excellent dimensional stability for close-tolerance machined parts. In high moisture or submerged applications, acetal bearings outperform nylon 4 to 1.
Acetal is ideally suited for close tolerance mechanical parts and electrical insulators which require strength and stiffness. It also offers resistance to a wide range of chemicals including many solvents.
Choose material grade
The following grades of acetal are available to buy online - please select from:
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 Acetal Homopolymer - Delrin | Acetal Homopolymer - manufactured from Delrin acetal resin - has higher mechanical strength, stiffness, hardness and creep resistance as well as a lower thermal expansion rate and often it also presents a better wear resistance than the acetal copolymer grade. Delrin Acetal Homopolymer is our standard stock grade of acetal.
Available colours:
White & Black
Available to buy in:
Sheet: 8mm to 50mm thick Rod: 5mm to 200mm diameter |
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| | Acetal Copolymer | Our acetal copolymer is more resistant against hydrolysis, strong alkalis and thermal-oxidative degradation than the acetal homopolymer.
Available colours:
White & Black
Available to buy in:
Sheet: 1mm to 120mm thick Rod: 5mm to 200mm diameter Tube: various OD x ID - including large diameter |
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| | Ertacetal H-TF / Delrin AF | Ertacetal H-TF is a Delrin AF Blend, a combination of Teflon fibres evenly dispersed in a Delrin acetal resin. Compared with Acetal Copolymer and Homopolymer, this material offers superior sliding properties.
Ertacetal H-TF is manufactured to order, and subject to minimum order quantities.
Available colours:
Deep Brown
Available to buy in:
Sheet: 12mm to 50mm thick Rod: 10mm to 100mm diameter |
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