PTFE Flat Sealing Washers

Closed-ring white PTFE washers for flat-face static seals, electrical separation and assembly spacing. Order by the actual inner diameter, outer diameter and thickness so the washer fits the sealing land and the available compression space.

115 listed ID × OD × thickness combinations
3–66 mm inner diameters; 1–3 mm listed thicknesses
Closed flat ring with no installation split

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The inner bore, flat face and axial thickness

Material & configuration

Product Specifications

Use the mating sealing faces to select ID and OD, then choose thickness to suit the joint's compression and axial space.

PTFE Flat Sealing Washers specifications
Material	White PTFE
Reference family	CP-WA
Geometry	Closed flat annular washer; rectangular cross-section
Dimension order	Inner diameter d × outer diameter D × thickness T
Listed inner diameters	3–66 mm
Listed outer diameters	8–75 mm
Listed thicknesses	1, 2 and 3 mm; individual size combinations below
Typical duties	Static face sealing, electrical separation and spacing
Supply unit	Piece; specify the order and pack quantities
Inspection dimensions	ID, OD, thickness and contact-face condition

Select a specification

Available Stock Specifications

115 closed-ring washer sizes. Every row keeps the complete ID × OD × T combination; choose the seat dimensions before requesting stock and price.

Find a size or reference

115 specifications

Download all sizes (CSV)

PTFE Flat Sealing Washers standard options and supply formats
Reference SKU	Specification	Supply format	Supply route	Inquiry
CP-WA-8X12X1	ID 8 × OD 12 × thickness T 1 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-3X8.5X2	ID 3 × OD 8.5 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-4X8X2	ID 4 × OD 8 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-4X9X2	ID 4 × OD 9 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-4X10X2	ID 4 × OD 10 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-5X10X2	ID 5 × OD 10 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-5X11X2	ID 5 × OD 11 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-5X12X2	ID 5 × OD 12 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-6X10X2	ID 6 × OD 10 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-6X11X2	ID 6 × OD 11 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-6X12X2	ID 6 × OD 12 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-6X14X2	ID 6 × OD 14 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-6X16X2	ID 6 × OD 16 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-6X18X2	ID 6 × OD 18 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X12X2	ID 8 × OD 12 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X14X2	ID 8 × OD 14 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X15X2	ID 8 × OD 15 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X16X2	ID 8 × OD 16 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X18X2	ID 8 × OD 18 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X20X2	ID 8 × OD 20 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X14X2	ID 10 × OD 14 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X15X2	ID 10 × OD 15 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X16X2	ID 10 × OD 16 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X18X2	ID 10 × OD 18 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X19X2	ID 10 × OD 19 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X20X2	ID 10 × OD 20 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X22X2	ID 10 × OD 22 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X25X2	ID 10 × OD 25 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-11X19X2	ID 11 × OD 19 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-11X20X2	ID 11 × OD 20 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-11X22X2	ID 11 × OD 22 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X16X2	ID 12 × OD 16 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X18X2	ID 12 × OD 18 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X19X2	ID 12 × OD 19 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X20X2	ID 12 × OD 20 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X22X2	ID 12 × OD 22 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X24X2	ID 12 × OD 24 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-14X20X2	ID 14 × OD 20 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-14X22X2	ID 14 × OD 22 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-14X24X2	ID 14 × OD 24 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-15X20X2	ID 15 × OD 20 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-15X22X2	ID 15 × OD 22 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-15X25X2	ID 15 × OD 25 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-15X30X2	ID 15 × OD 30 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-16X20X2	ID 16 × OD 20 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-16X22X2	ID 16 × OD 22 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-16X24X2	ID 16 × OD 24 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-16X26X2	ID 16 × OD 26 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-18X22X2	ID 18 × OD 22 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-18X24X2	ID 18 × OD 24 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-18X26X2	ID 18 × OD 26 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-18X28X2	ID 18 × OD 28 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-18X30X2	ID 18 × OD 30 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-20X26X2	ID 20 × OD 26 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-20X28X2	ID 20 × OD 28 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-20X30X2	ID 20 × OD 30 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-22X27X2	ID 22 × OD 27 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-22X30X2	ID 22 × OD 30 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-24X29X2	ID 24 × OD 29 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-24X30X2	ID 24 × OD 30 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-24X34X2	ID 24 × OD 34 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-25X30X2	ID 25 × OD 30 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-25X35X2	ID 25 × OD 35 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-27X32X2	ID 27 × OD 32 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-28X38X2	ID 28 × OD 38 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-30X36X2	ID 30 × OD 36 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-30X39X2	ID 30 × OD 39 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-30X40X2	ID 30 × OD 40 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-32X38X2	ID 32 × OD 38 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-35X45X2	ID 35 × OD 45 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-38X44.5X2	ID 38 × OD 44.5 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-40X50X2	ID 40 × OD 50 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-45X52X2	ID 45 × OD 52 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-45X55X2	ID 45 × OD 55 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-50X60X2	ID 50 × OD 60 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-53X62X2	ID 53 × OD 62 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-55X65X2	ID 55 × OD 65 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-60X70X2	ID 60 × OD 70 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-66X75X2	ID 66 × OD 75 × thickness T 2 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X14X2.5	ID 8 × OD 14 × thickness T 2.5 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X18X2.5	ID 8 × OD 18 × thickness T 2.5 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X18X2.5	ID 10 × OD 18 × thickness T 2.5 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X18X2.5	ID 12 × OD 18 × thickness T 2.5 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-5X12X3	ID 5 × OD 12 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-6X12X3	ID 6 × OD 12 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-6X14X3	ID 6 × OD 14 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-6X18X3	ID 6 × OD 18 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X14X3	ID 8 × OD 14 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X15X3	ID 8 × OD 15 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X16X3	ID 8 × OD 16 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-8X18X3	ID 8 × OD 18 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X16X3	ID 10 × OD 16 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X18X3	ID 10 × OD 18 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X19X3	ID 10 × OD 19 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X20X3	ID 10 × OD 20 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-10X25X3	ID 10 × OD 25 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X18X3	ID 12 × OD 18 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X19X3	ID 12 × OD 19 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X20X3	ID 12 × OD 20 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X22X3	ID 12 × OD 22 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-12X24X3	ID 12 × OD 24 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-14X24X3	ID 14 × OD 24 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-15X25X3	ID 15 × OD 25 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-16X24X3	ID 16 × OD 24 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-16X25X3	ID 16 × OD 25 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-17X35X3	ID 17 × OD 35 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-18X25X3	ID 18 × OD 25 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-20X30X3	ID 20 × OD 30 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-25X35X3	ID 25 × OD 35 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-30X39X3	ID 30 × OD 39 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-30X40X3	ID 30 × OD 40 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-35X45X3	ID 35 × OD 45 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-40X50X3	ID 40 × OD 50 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-45X55X3	ID 45 × OD 55 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote
CP-WA-50X60X3	ID 50 × OD 60 × thickness T 3 mm	Piece; closed flat ring	Stock inquiry	Check Stock & Quote

All dimensions are millimetres and the quotation unit is one piece. Submit the required quantity with the reference. Availability, pack quantity and pricing are returned in the quotation.

Need a different specification? Send your dimensions

Fit the sealing land, not the thread designation

A fitting's nominal thread size does not define its washer. The inner diameter clears the stem or passage, while the outer diameter stays on the supported sealing face. The washer needs an even load path across that annular contact area.

For an existing joint, measure the washer seat and available axial space as well as the old part. For a new assembly, provide the fitting section so the washer dimensions can be tied to the mating faces rather than selected by appearance.

Control compression in a PTFE flat joint

PTFE resists many industrial fluids and provides an electrically insulating contact layer. Under sustained compression it also creeps, so joint stiffness, washer thickness and the retained clamp load matter to a lasting seal.

A thicker washer changes deformation and the axial position of the parts. Keep thickness on the drawing, use flat clean faces and avoid compensating for a damaged sealing land by simply increasing thickness. For pressure service, treat the washer and the surrounding joint as one design.

Keep sealing and insulation requirements distinct

An insulating washer can separate conductive components without acting as the pressure seal. A washer intended to contain fluid needs a defined sealing face and compression arrangement in addition to material compatibility.

For food-contact, high-purity or electrical qualification work, state the material and documentation requirements in the inquiry. The standard dimensional reference identifies the part size; it does not identify a separate certified material batch.

A hand holding a PTFE sealing washer beside a group of closed rings — Closed-ring washers in a range of sizes

White PTFE sealing washers organized in a clear compartment box — Separate washer sizes for assembly handling

A PTFE sealing washer seated against a brass instrument fitting — Example of a washer at a flat fitting seat

White PTFE flat washers with different inner and outer diameters — ID and OD define the annular sealing area

Custom washer profiles and holes PTFE gasket manufacturing

Equipment & process duties

Applications

Instrument connections

Match the flat washer to the seat in pressure-gauge and instrument fittings.

Static fluid joints

Use a supported, evenly compressed PTFE contact face in compatible small-bore piping and valve connections.

Electrical and mechanical isolation

Separate contact faces or maintain a defined axial spacing with the specified washer thickness.

Direct answers

Common Questions

How do I read CP-WA-3X8.5X2?

It is a PTFE washer with 3 mm inner diameter, 8.5 mm outer diameter and 2 mm thickness. Order quantity and packaging are separate.

Can I select a washer from the fitting thread size?

Use the actual washer seat dimensions. Nominal thread size alone does not establish the required inner diameter, outer diameter or thickness.

Can these washers replace an elastomer O-ring?

A flat PTFE washer needs a compatible flat-face compression arrangement. An elastomer O-ring groove uses a different geometry and preload mechanism.

Does changing thickness affect the seal?

Yes. Thickness changes compression behavior, joint position and long-term deformation. Retain the designed thickness or revise the joint with the new dimension.

Specify your requirement

Quote PTFE Flat Sealing Washers

Send the CP-WA reference or ID × OD × T, quantity, pack size and tolerances. For sealing, add the joint section, medium, temperature, pressure and compression method; for insulation, include the electrical requirement.

Send Your Requirement

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