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Washers › Bonded, Sealing & Roofing Washers

Custom Rubber Washers with Durable PTFE Encapsulation for Sealing

Updated 2026-11-04 · Markdown version

Model no. Custom

US$0.12 – 1.08 / piece

MOQ 1,000 pieces · Final price confirmed in your quote

Material: NBR
Standard: Standard
Compound Material: Meet ASTM D2000, Can Be Rosh, Reach Compliance
Size: Customize Size
Color: as Per Request
Hardness: From 20 ~ 90 Shore a
Model Number: Custom
Package Size: 15.00cm * 15.00cm * 10.00cm

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Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Customization	Available
Material	NBR
Application	Valve
Model NO.	Custom
Type	Dust Seal
Performance	Wear
Shape	Square Ring
Standard	Standard
Certification	ISO9001
Selling Units	Single Item
Compound Material	Meet ASTM D2000, Can Be Rosh, Reach Compliance
Description	Square Ring with PTFE Encapsulated
Place of Origin	Fujian, China
Single Gross Weight	0.200 Kg
Size	Customize Size
Color	as Per Request
Hardness	From 20 ~ 90 Shore a
Model Number	Custom
Processing Service	Molding
Lead Time	8 Days for Sample, 12~18 Days for Mass Production
Advantage	Smooth Surface with Small Parting Line
Package	PE Bag, Carton
Transport Package	Carton
Specification	111
Origin	China
Production Capacity	1000000
Package Size	15.00cm * 15.00cm * 10.00cm
Package Gross Weight	1.000kg
Outer covering material	PTFE
Internal rubber material	FKM silicone rubber
Super strong corrosion resistance	able to resist a large number of chemical substances, including strong acids, strong bases, and organic solutions.
Low friction coefficient	The outer layer of PTFE has a base friction coefficient, making it easier to install and resulting in lower equipment operating losses.
Good sealing performance	The internal rubber material provides good elasticity and sealing performance, which can adapt to different pressure and temperature changes.
Chemical industry	The gaskets can be used for sealing of reactors, tanks, pipelines, valves and other equipment.
Food and beverage industry	It is suitable for sealing of food processing equipment, beverage filling equipment, etc.
Pharmaceutical industry	The gasket can be used for sealing of medical pumps, infusion equipment, drug storage containers, medical equipment shells, etc.
Electronic industry	It can be used for sealing the shell of electronic equipment, sealing the connection parts of circuit boards and so on.
Q 7	How to select the raw compound for my application?
Q 8	Do you use any international standards for the rubber products?
Q 9	Can you supply different color materials?
Category	Bonded, Sealing & Roofing Washers

Technical parameters

Product name	OEM Rubber Gasket/flat Gasket/square ring with PTFE encapsulated
Model	Custom
Material	Rubber,PTFE
Color	Custom
Size	Custom
cross-section	Square/Custom
Service	Custom
OEM/ODM	Aavailable

CharacteristicSuper strong corrosion resistance: able to resist a large number of chemical substances, including strong acids, strong bases, and organic solutions.Low friction coefficient: The outer layer of PTFE has a base friction coefficient, making it easier to install and resulting in lower equipment operating losses.Good sealing performance: The internal rubber material provides good elastic

Description

Custom Rubber Washers with Durable PTFE Encapsulation for Sealing is part of our bonded, sealing & roofing washers range (Washers).

Key details

Type: Dust Seal
Standard: Standard
Material: NBR
Size: Customize Size
Application: Valve
Certification: ISO9001
Performance: Wear
Shape: Square Ring

Available configurations include material, standard, compound material, size and color. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 1,000 pieces at US$0.12 – 1.08 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for Custom Rubber Washers with Durable PTFE Encapsulation for Sealing?

The listed minimum order is 1,000 pieces, at US$0.12 – 1.08 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

What are the main specifications of Custom Rubber Washers with Durable PTFE Encapsulation for Sealing?

Type: Dust Seal; Standard: Standard; Material: NBR; Size: Customize Size; Application: Valve; Certification: ISO9001. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, standard, compound material, size and color. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other bonded, sealing & roofing washers are available?

The Bonded, Sealing & Roofing Washers category lists 2,033 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/washers/bonded-sealing-roofing-washers/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

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US$0.12 – 1.08MOQ 1,000 piecesGet a quote WA