PTFE Flat Washers - Non-Stick, Chemical-Inert Sealing Washers

PTFE flat washers provide unmatched chemical inertness, a non-stick surface, and excellent performance across a wide temperature range-making them the preferred choice for chemical processing, food and pharmaceutical equipment, and applications requiring a non-contaminating sealing washer. Superior Washer & Gasket Corp manufactures PTFE washers in standard and custom sizes.

Our ISO 9001:2015 certified plastic washer manufacturing includes PTFE, PTFE-filled, and other fluoropolymer washers. We supply PTFE flat washers from stock inventory and produce custom PTFE washers to your exact OD, ID, and thickness-all made in the U.S.A. with consistent material quality.

Full chemical inertness and non-contaminating properties
Wide temperature range performance
Standard and custom PTFE flat washer sizes
ISO 9001:2015 certified quality management
Made in the U.S.A.

Showing 251–300 of 365 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
550-322-062	ID 1.0	OD 1.5	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-323-031	ID 1.0	OD 1.625	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-324-010	ID 1.005	OD 1.25	Thickness 0.01	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-325-016	ID 1.031	OD 1.375	Thickness 0.016	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-326-031	ID 1.062	OD 1.5	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-327-020	ID 1.125	OD 1.38	Thickness 0.02	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-33-016	ID 0.089	OD 0.218	Thickness 0.016	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-333-016	ID 0.5	OD 0.687	Thickness 0.016	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-334-064	ID 0.262	OD 0.625	Thickness 0.064	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-335-031	ID 0.373	OD 0.972	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-337-061	ID 0.143	OD 0.379	Thickness 0.061	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-338-020	ID 0.327	OD 0.751	Thickness 0.02	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-339-062	ID 0.157	OD 0.497	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-34-031	ID 0.089	OD 0.25	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-340-032	ID 0.52	OD 0.752	Thickness 0.032	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-341-015	ID 0.505	OD 0.583	Thickness 0.015	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-342-058	ID 0.878	OD 1.502	Thickness 0.058	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-343-033	ID 0.112	OD 0.25	Thickness 0.033	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-344-021	ID 0.385	OD 1.0	Thickness 0.021	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-345-030	ID 0.187	OD 0.375	Thickness 0.03	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-346-031	ID 0.142	OD 0.412	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-347-030	ID 0.28	OD 0.497	Thickness 0.03	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-348-031	ID 0.456	OD 0.755	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-349-010	ID 0.441	OD 1.245	Thickness 0.01	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-35-031	ID 0.089	OD 0.281	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-350-062	ID 0.117	OD 0.252	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-351-033	ID 0.414	OD 0.752	Thickness 0.033	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-352-010	ID 0.036	OD 0.094	Thickness 0.01	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-353-032	ID 0.254	OD 0.433	Thickness 0.032	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-354-052	ID 0.746	OD 1.252	Thickness 0.052	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-355-120	ID 0.526	OD 0.803	Thickness 0.12	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-359-025	ID 0.198	OD 0.309	Thickness 0.025	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-36-016	ID 0.089	OD 0.312	Thickness 0.016	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-360-062	ID 0.53	OD 1.001	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-361-015	ID 0.252	OD 0.437	Thickness 0.015	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-362-041	ID 0.2	OD 0.437	Thickness 0.041	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-363-064	ID 0.284	OD 0.736	Thickness 0.064	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-364-062	ID 0.429	OD 0.786	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-365-031	ID 0.139	OD 0.411	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-366-083	ID 0.424	OD 0.885	Thickness 0.083	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-367-015	ID 0.37	OD 0.751	Thickness 0.015	Material PTFE	ID TOL +-.010	OD TOL +-.010	Quantity
550-368-031	ID 0.38	OD 0.582	Thickness 0.031	Material PTFE	ID TOL +-.010	OD TOL +-.010	Quantity
550-37-031	ID 0.089	OD 0.343	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-370-031	ID 0.5	OD 0.688	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-371-009	ID 0.176	OD 0.625	Thickness 0.009	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-372-061	ID 0.26	OD 0.377	Thickness 0.061	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-373-021	ID 0.2	OD 0.469	Thickness 0.021	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-374-032	ID 0.491	OD 0.563	Thickness 0.032	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-375-096	ID 0.158	OD 0.505	Thickness 0.096	Material PTFE	ID TOL +-.005	OD TOL +-.010	Quantity
550-376-063	ID 0.41	OD 0.996	Thickness 0.063	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity

PTFE Flat Washer Frequently Asked Questions

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

What are PTFE flat washers?
PTFE flat washers are manufactured from polytetrafluoroethylene (PTFE), commercially known as Teflon. PTFE has the lowest coefficient of friction of any solid material, near-universal chemical inertness, and a usable temperature range from cryogenic to approximately +500 degrees F (+260 degrees C). These properties make PTFE washers the first choice for chemical, pharmaceutical, semiconductor, and food processing applications.

What makes PTFE unique compared to other plastic washer materials?
PTFE is virtually chemically inert, resistant to almost every chemical including concentrated acids, bases, and solvents that attack other plastics. It is also non-stick, non-conductive, non-magnetic, FDA compliant, and biocompatible. No other plastic material combines all of these properties in a single material.

What are the limitations of PTFE washers?
PTFE has relatively low compressive strength and tends to cold flow (creep) under sustained load, which can cause loss of clamping force over time in high-stress fastener joints. For applications with high clamp loads, glass-filled or carbon-filled PTFE compounds offer improved creep resistance while retaining most of PTFE's chemical resistance.

Can you make custom PTFE flat washers?
Yes. Superior Washer manufactures custom PTFE washers to your OD, ID, and thickness specifications in virgin PTFE and filled grades. Contact us via the Quick Quote form or by phone.

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

PTFE is one of several chemically inert plastics we manufacture. Take a look at the full flat washers collection to find the right material for your project.