Name: 2 3/4 Flat Rubber Seal Ring
Brand: Shanghai Qinuo Industry Co., Ltd.
SKU: AS568
Price: 1.20 USD
Availability: InStock

Home Products Rubber O Rings

2 3/4 Flat Rubber Seal Ring

Product Details:

Place of Origin:	Shanghai, China
Brand Name:	SHQN
Certification:	ISO 9001
Model Number:	AS568

Payment & Shipping Terms:

Minimum Order Quantity:	1000
Price:	0.2-3
Packaging Details:	Carton packing
Delivery Time:	15 days
Payment Terms:	L/C, T/T, Western Union
Supply Ability:	5000pcs per week

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Detailed Product Description

Hardness:	90 Shore A Referenced; Confirm Compound And Tolerance	Avilable Size:	AS568-227 Reference; Confirm ID, OD And Section Against Drawing
Color:	Black/ White/ Red/ Orange Or Customized Color	Nearest Port:	Shanghai
MOQ:	1000pcs	Types:	Confirm Circular O-ring Or Flat Annular Section On Drawing
Custom:	Available OEM/ODM
Highlight:	2 3/4 Flat Rubber Seal Ring , AS568-227 Rubber Seal Ring

Buna NBR Seal Ring — AS568-227 and Flat-Section Drawing Confirmation

Replacement dimensions and section profile

Send the seal drawing or sample dimensions to confirm whether the required part is a circular-section O-ring or a flat annular seal.

Application

Application of NBR O-Rings and Buna O-Rings:

Buna, also called NBR or nitrile rubber, is used for compatible oil-service seals. Select the actual compound against the fluid formulation, additives and operating temperatures. For this enquiry, confirm the AS568-227 reference separately from the 2 3/4 description: provide inner diameter, outer diameter and section dimensions rather than treating these labels as equivalent dimensions.

Qinuo Equipment list:

20 Cavities Rounding Comounding Machines	Automatic Powder Distribution Machine	Automatic Oil Distribution Machine
8 Sets of Open Cell Mixers ( From 6 inches to 16 inches)	5 Layers of Material Cooling Machine	3 Sets of 55kq Closed Cell Mixers
2 Sets of Material Preform Machine	3 Sets of Silicone Vacuum Mixer	65 mm Diameter Silicone Extrusion Line
JG-65mm Diameter Silicone Extrusion Line	75mm Diameter Silicone Extrusion Line	90 mm Diameter General Rubber Extrusion Line
75mm Diameter General Rubber Extrusion Line	Fiber Reinforced Rubber Extrusion Line	Vulcanizing Tank
Adhesive Machin	28 Sets of Small Vulcanizing Molding Machines(From 50Ton to 100 Tons)
25 Sets of 200 Ton Vulcanizing Molding Machine	4 Sets of 200 Ton Injection Compression Machine	2 Sets of 200 Ton Vacumm Compression Machine
2 Sets of 250 Ton Vulcanizing Molding Machine	2 Sets of Horizontal Molding Machine	4 Sets of 300 Ton Vulcanizing Molding Machine
2 Sets of 300 Ton Injection Compression Machine	Punching Machine	Tensile Strength Tester
Brittleness Tester	Hardness Tester	Thickness Gauge
Mooney viscometer	Rheometer Tester	Analytical Balance
Electrical Resistance Measurer	Density Tester	2 sets Aging Testing Oven

Qinuo Material processing range:

Silicone	SBR	ACM	PE
EPDM	NBR	IIR	PC
Neoprene	Silicone Sponge	CSM	PP
Urethane	Closed Cell Sponge	ABS	PA
	HNBR	Hard PVC	TPE
NR	ECO	Soft pvc	TPV
POM	TPU

Qinuo Custom Capabilties:

Customized services	Plastic & Rubber bonding	Mold Design
Customized extrusion	Extrusion and bonded gaskets	Mold Production
Injection Molding	Self Adhesive rubber profile	Customized Package
Sheet Cutting	Rubber Complex Intake Hose	Problem Solving
Standard Size extrusion	Reinforced rubber tubes	Assembly
Special Compound design	Rubber Solution Suggestion	Sourcing
Rubber& Metal bonding

2 3/4 Flat Rubber Seal Ring

Product Description

This listing concerns a Buna/NBR replacement ring. The AS568-227 O-ring reference and a flat-section seal require different geometric descriptions. Confirm the intended cross-section before selecting a replacement.
For a circular-section O-ring, specify the dash number, inner diameter and cross-section. For a flat ring, specify inner diameter, outer diameter and axial thickness with tolerances. Explain whether 2 3/4 refers to the seal dimension, mating part or nominal connection.
The previous product description identifies 90 Shore A Buna. Confirm that hardness with the compound specification and drawing; alternative hardness or polymers require a separate review.

Material:	Buna/NBR for this enquiry; other polymers require a separate compound specification and compatibility review.
Hardness	90 Shore A referenced in the product description; confirm compound and order tolerance.
Mode of Production	Molded construction and any alternative manufacturing route to be agreed against the section drawing.
Production Capabilities	Select tooling and inspection requirements for the specified diameter, section profile and tolerances.
Size/Color	Specify dimensions, section shape and color on the drawing; color does not establish compound identity.

More Pictures of the rubber O rings:

2 3/4 Flat Rubber Seal Ring

Other relative rubber products for oil drilling use:

Colored NBR(nitrile -butadiene rubber) Oil resistant tiny rubber o ring seals

Moulded Rubber Products

2 3/4 Flat Rubber Seal Ring

Rubber Bonded with Metal Products

2 3/4 Flat Rubber Seal Ring

Extruded Rubber Products

2 3/4 Flat Rubber Seal Ring

Packing and shipping

1: Express: S.F. , DHL, UPS, TNT, FedEx ect, for urgent and small order.

2: Air shipment: air port to air port , or air port to door.

3: Sea shipment: suitable for bulk goods. it will takes more longer time than air shipment.

2 3/4 Flat Rubber Seal Ring

Colored NBR(nitrile -butadiene rubber) Oil resistant tiny rubber o ring seals

2 3/4 Flat Rubber Seal Ring

bellow

Our company

Shanghai Qinuo Industry Co. Ltd

provides rubber and plastic component enquiries for industrial equipment.
Submit the seal geometry, compound specification and quantity for a replacement or custom component review.
Manufacturing and inspection requirements are agreed for the component drawing and application.
ISO 9001 quality management is available. Specify product-specific material, regulatory and test documentation with the order.

The steps of the production:

FAQ

1. Is a flat ring interchangeable with an AS568 O-ring?
No interchangeability should be assumed. A flat annular seal is specified by width and thickness, while an O-ring has a circular cross-section. Match the mating groove, compression direction and drawing.
Check the installed section and available gland space before ordering a replacement.
2. What does the 2 3/4 description mean?
a. Identify whether it describes inner diameter, outer diameter or a nominal mating connection.
b. Include the measurement units and tolerances.
c. Confirm the AS568 dash reference using the applicable drawing or dimensional table.
d. Record cross-section diameter for an O-ring.
e. Record axial thickness and radial width for a flat ring.
f. Supply the mating groove dimensions when available.
g. A sample photograph helps identify the profile but does not replace dimensional measurements.
3. How should 90 Shore A Buna be specified?
1. State NBR/Buna compound designation and nominal hardness with tolerance.
2. Provide the actual oil or fluid formulation and additives.
3. Include normal and peak service temperatures.
4. State pressure cycles, operating clearance and whether the seal moves in service.
5. Request the applicable compound documentation and inspection requirements.
4. What information is needed for a quotation?
1. Drawing revision or measured sample dimensions.
2. Circular or flat cross-section identification.
3. Compound, hardness, color and tolerances.
4. Application, fluid and operating conditions.
5. Quantity, packing and delivery destination.