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Washers › Bonded, Sealing & Roofing Washers

Mechanical Seal Flat Round Rubber Washer Gasket

Updated 2026-11-04 · Markdown version

Model no. ULT-RoundGasket-01

US$1.20 / piece

MOQ 1 piece · Final price confirmed in your quote

Material: EPDM, NBR, Silicone, Viton, Cr, HNBR, Nr
Color: Any Color According to Pantone's Color Number
Hardness: 30sha to 90sha

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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	EPDM, NBR, Silicone, Viton, Cr, HNBR, Nr
Application	Machinery, Industrial Component, Electronic Product, Vehicle, Household Appliance
Model NO.	ULT-RoundGasket-01
Effect	Hole with Seal
Cross-Section Shape	Round
Color	Any Color According to Pantone's Color Number
Certification	SGS, FDA, Reach, RoHS and Ts16949
Process	Molding or Cutting
Hardness	30sha to 90sha
Working Temp	-60 to +260℃
Storage Life	5 Years
Sample Time	3 Days to 7 Days
Sample Express	DHL, TNT, UPS, FedEx, Aramex and Sf etc.
Delivery Time	7 Days to 15 Days
Price Term	Fob, CIF, Ex-Work and C&F etc
OEM/ODM	Welcome
Transportation	by Sea, by Air or by Express
Payment Term	T/T, L/C or Wesntern Union
Transport Package	PE Bag Inside, Carton Box Outside
Specification	Any Size According the Requirements
Origin	China
HS Code	4016931000
Production Capacity	5000000 PCS/Month
Category	Bonded, Sealing & Roofing Washers

Technical parameters

The Advantages and Property
1.	Super Sealing and Anti Vibration function
2.	Good Quality of Rubber Materials with High Elasticity, Insolation, Waterproof and Excellent Wear Resistant, Aging Resistant, High/Low Temperature, Anti-Corrosion and Dust Proof etc.
3.	Environment Protection and Non Toxic. Certificates of SGS, CE, RoSH, REACH and TS16949
4.	Factory with safety and stability.
5.	OEM and ODM are welcome
6.	Rubber Materials are certificated by official authority with famous brands.
7.	Fast Delivery. Have stock or make fast

Raw Materail	Hardness	Color	Temperature	Advantage	Use
Nitrile Rubber (Buna-N/NBR)	40 to 90 ShA	Black, White, Blue, Green, Yellow etc	-30 to 120ºC	Excellent Oil and Water Resistance, Cheaper	Oil and Water Situation
Hydrogenate Nitrile HNBR	40 to 90 ShA	Black	-50 to 150ºC	Excellent Oil and Water Resistance, Cold Resustance	Cold Resistance Situation
Silicone Rubber VMQ	30 to 90 ShA	Black, Clear, White, Red, Yellow, Blue	-60 to 220ºC	Good Heat&Cold Resistance, Lubrication Oil Resistance, Water Resistance.	Food&Medicine Situation
Ethylene Propylene Rubber EPDM	40 to 90 ShA	Black, Gray	-50 to 150ºC	Excellent Ozone7Aging Resistance, Heat&Cold Resistance, Steam Resistance	Ozone,Water-Proof Situation
Fluorine Rubber FKM, FPM	50 to 90 ShA	Black, Grown Green	-20 to 250ºC	Excellent Oil, Heat, Acid&Alkali Resistance	Oil Resistance&Chemical Situation
Neoprene Rubber CR	60 to 90 ShA	Black	-40 to 120ºC	Excellent Mechanical Strength$ Fatigue resistance
Fluorinated Silicone Rubber FLS	60 to 90 ShA	Black	-50 to 200ºC	Excellent Heat&Cold Resistance, Oil&Chemical Resistance	All Situation

The Advantages of our company
1.	Super Production Line with Advanced Production Equipment and Test Equipment.
2.	Competitive Prices and High Quality and Fast Delivery from Our Professional Engineers.
3.	Tool Department designs the precise tools according to your drawings or samples. This can supply great Samples and Goods with perfect dimensions.
4.	All the Raw Material are passed Quality Certification from the famous Suppliers.
5.	We have the special Supervision Department to Supervise the whole process, Including opening tooling, preparing raw material, making samples, making mass goods, packing and shipment etc.
6.	OEM and ODM are welcome

Packing and Shipment
1.	100 pcs or 200 pcs are packed in PE Bag, then certain quantity are put into Carton Box.
2.	Packing List was put in each Carton Box with details.
3.	8 Sets or Certain Quantity of Carton Box are put on one Non-fumigation Pallet,then wrapped by Plastic Film
4.	We have our own forwarder with Rich Experience in delivery arrangement to optimize the most economic and fastest shipping way including BY SEA, BY AIR or BY EXPRESS etc.

Description

Mechanical Seal Flat Round Rubber Washer Gasket is part of our bonded, sealing & roofing washers range (Washers).

Key details

Material: EPDM, NBR, Silicone, Viton, Cr, HNBR, Nr
Application: Machinery, Industrial Component, Electronic Product, Vehicle, Household Appliance
Certification: SGS, FDA, Reach, RoHS and Ts16949
Effect: Hole with Seal
Cross-Section Shape: Round
Color: Any Color According to Pantone's Color Number
Process: Molding or Cutting
Hardness: 30sha to 90sha

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

Ordering through Engineering Hardware & Fasteners

Minimum order is 1 piece at US$1.20 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 Mechanical Seal Flat Round Rubber Washer Gasket?

The listed minimum order is 1 piece, at US$1.20 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 Mechanical Seal Flat Round Rubber Washer Gasket?

Material: EPDM, NBR, Silicone, Viton, Cr, HNBR, Nr; Application: Machinery, Industrial Component, Electronic Product, Vehicle, Household Appliance; Certification: SGS, FDA, Reach, RoHS and Ts16949; Effect: Hole with Seal; Cross-Section Shape: Round; Color: Any Color According to Pantone's Color Number. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, color and hardness. 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$1.20MOQ 1 pieceGet a quote WA