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 51–100 of 365 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
550-144-062	ID 0.171	OD 0.5	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-145-031	ID 0.171	OD 0.562	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-146-062	ID 0.171	OD 0.625	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-147-031	ID 0.171	OD 0.735	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-148-010	ID 0.171	OD 0.75	Thickness 0.01	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-149-062	ID 0.178	OD 0.35	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-15-005	ID 0.058	OD 0.092	Thickness 0.005	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-150-020	ID 0.178	OD 0.437	Thickness 0.02	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-151-016	ID 0.187	OD 0.312	Thickness 0.016	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-152-005	ID 0.187	OD 0.375	Thickness 0.005	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-153-020	ID 0.187	OD 0.406	Thickness 0.02	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-154-062	ID 0.187	OD 0.437	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-155-031	ID 0.187	OD 0.5	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-155-040	ID 0.187	OD 0.5	Thickness 0.04	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-156-062	ID 0.187	OD 0.531	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-157-016	ID 0.187	OD 0.606	Thickness 0.016	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-158-016	ID 0.187	OD 0.625	Thickness 0.016	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-159-062	ID 0.187	OD 0.75	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-16-016	ID 0.063	OD 0.125	Thickness 0.016	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-160-031	ID 0.187	OD 1.0	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-161-062	ID 0.187	OD 1.781	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-162-062	ID 0.194	OD 0.312	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-163-031	ID 0.194	OD 0.343	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-164-031	ID 0.194	OD 0.351	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-165-031	ID 0.194	OD 0.375	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-166-031	ID 0.194	OD 0.437	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-167-062	ID 0.194	OD 0.5	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-168-031	ID 0.194	OD 0.562	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-169-062	ID 0.194	OD 0.625	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-17-016	ID 0.063	OD 0.187	Thickness 0.016	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-170-031	ID 0.194	OD 0.687	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-171-062	ID 0.194	OD 0.75	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-172-031	ID 0.2	OD 0.312	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-173-005	ID 0.2	OD 0.359	Thickness 0.005	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-174-031	ID 0.2	OD 0.375	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-175-031	ID 0.2	OD 0.437	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-176-031	ID 0.2	OD 0.5	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-177-062	ID 0.2	OD 0.562	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-178-063	ID 0.2	OD 0.625	Thickness 0.063	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-179-031	ID 0.2	OD 0.75	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-18-031	ID 0.063	OD 0.218	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-180-045	ID 0.208	OD 0.275	Thickness 0.045	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-181-031	ID 0.208	OD 0.375	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-182-031	ID 0.219	OD 0.312	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-183-031	ID 0.219	OD 0.375	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-184-062	ID 0.219	OD 0.437	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-185-031	ID 0.219	OD 0.5	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-186-062	ID 0.219	OD 0.625	Thickness 0.062	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-187-031	ID 0.225	OD 0.312	Thickness 0.031	Material PTFE	ID TOL +-.005	OD TOL +-.005	Quantity
550-188-031	ID 0.225	OD 0.375	Thickness 0.031	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.