Home | Celcon Flat Washers - Acetal Copolymer Washers for Precision Applications

Celcon Flat Washers - Acetal Copolymer Washers for Precision Applications

Celcon flat washers are made from acetal copolymer (POM-C), offering superior dimensional stability, low moisture absorption, and excellent wear and chemical resistance. They are widely used in medical, food processing, automotive, and electronics applications where dimensional precision and chemical compatibility are critical.

Superior Washer & Gasket Corp manufactures Celcon plastic washers in standard and custom sizes with ISO 9001:2015 certified quality assurance. Our plastic washer capabilities include Celcon, Delrin, nylon, PTFE, and other engineering plastics-all produced in the U.S.A. to your exact specifications.

  • Celcon acetal copolymer for dimensional stability and wear resistance
  • Low moisture absorption for consistent performance
  • Standard and custom Celcon washer sizes
  • ISO 9001:2015 certified manufacturing
  • Made in the U.S.A.

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Showing 1–19 of 19 products

SKU ID OD Thickness Material ID TOL OD TOL Quantity

290-100-031

ID 0.156
OD 0.108
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-101-031

ID 0.125
OD 0.375
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-102-031

ID 0.202
OD 0.38
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-103-031

ID 0.156
OD 0.437
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-104-031

ID 0.187
OD 0.437
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-105-031

ID 0.203
OD 0.437
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-106-045

ID 0.293
OD 0.437
Thickness 0.045
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-107-031

ID 0.32
OD 0.449
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-108-020

ID 0.282
OD 0.497
Thickness 0.02
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-109-032

ID 0.318
OD 0.498
Thickness 0.032
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-110-020

ID 0.193
OD 0.625
Thickness 0.02
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-111-062

ID 0.281
OD 0.625
Thickness 0.062
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-112-062

ID 0.601
OD 0.747
Thickness 0.062
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-113-062

ID 0.746
OD 0.747
Thickness 0.062
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-114-031

ID 0.635
OD 0.855
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-115-031

ID 0.629
OD 0.863
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-116-093

ID 0.762
OD 0.998
Thickness 0.093
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-117-025

ID 0.814
OD 1.091
Thickness 0.025
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

290-118-031

ID 0.753
OD 1.124
Thickness 0.031
Material Celcon
ID TOL +-.005
OD TOL +-.005
Quantity

Celcon Flat Washer Frequently Asked Questions

Below are answers to some of the most common questions about Celcon flat washers.

What are Celcon flat washers?
Celcon flat washers are made from acetal copolymer (POM-C), an engineering plastic known for superior dimensional stability, low moisture absorption, and excellent wear and chemical resistance. Celcon is the brand name for Ticona's acetal copolymer resin and is widely used in medical, food processing, automotive, and electronics applications where tight dimensional tolerances and chemical compatibility are critical.

What is the difference between Celcon and Delrin washers?
Both are acetal-based engineering plastics with similar properties, but they differ in chemistry. Delrin is an acetal homopolymer (POM-H) produced by DuPont, while Celcon is an acetal copolymer (POM-C). Celcon has slightly better chemical resistance and is less prone to centerline porosity in thick sections, making it preferred in medical and food-contact applications. Delrin generally offers slightly higher stiffness and fatigue resistance.

What applications are Celcon washers used in?
Celcon washers are used in medical devices, food processing equipment, automotive components, and electronics assemblies where low moisture absorption, dimensional stability, and chemical resistance are required. Their self-lubricating properties also make them useful in moving assemblies where metal washers would require lubrication.

Can you make custom Celcon flat washers?
Yes. Superior Washer manufactures custom Celcon washers to your OD, ID, and thickness specifications. We currently stock 19 standard Celcon washer sizes and can produce non-catalog dimensions to order.

Are your Celcon flat washers made in the USA?
Yes. All Celcon flat washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System. Material certifications are available upon request.

Beyond Celcon, our inventory spans dozens of metal and non-metal materials to match nearly any application. Take a look at our full lineup of flat washers to find the right fit.