ARO Y220-230 PTFE O-Ring | 1/8 in. x 2-3/4 in. OD

ARO Y220-230 PTFE O-Ring

The ARO Y220-230 is a replacement PTFE O-ring used in the fluid section of compatible ARO metallic air-operated double-diaphragm pumps.

Official ARO documentation specifies the Y220-230 as a 1/8 inch x 2-3/4 inch outside diameter O-ring. In applicable 6661XX metallic pump parts lists it is identified as Item 19.

PTFE Construction

The Y220-230 is manufactured from PTFE, a chemically resistant material commonly used in fluid-handling applications where compatibility with aggressive process liquids may be required.

Material compatibility should always be checked against the actual process fluid, concentration and operating temperature.

Verified Dimensions

• Part type: O-Ring
• Material: PTFE
• Cross-section: 1/8 inch
• Outside diameter: 2-3/4 inches
• ARO parts-list reference: Item 19

Fluid-Section Application

The Y220-230 is used in the wetted fluid section of compatible ARO diaphragm pumps. It helps seal fluid-section joints where chemical-resistant PTFE sealing is required.

This component should not be confused with air-motor O-rings or pneumatic seals used in the pump air section.

Compatible Pump Families

Official ARO documentation shows the Y220-230 in compatible metallic pump families including selected:

• 66615X 1-1/2 inch metallic diaphragm pumps
• 66620X 2 inch metallic diaphragm pumps
• Selected 6661XX metallic configurations
• Related PTFE fluid-section configurations

Published model examples include 666150-244-C, 666151-244-C, 666200-244-C, 666202-244-C and 66620A-244-C. Compatibility should always be verified using the complete pump model.

Four O-Rings in Applicable Assemblies

Applicable ARO parts tables list four Y220-230 O-rings in the documented fluid-section assembly.

This is the quantity installed in the pump and should not automatically be interpreted as the quantity supplied in one sales package.

Fluid Section Service Kit Component

The Y220-230 is included in applicable ARO fluid-section service kits for PTFE-equipped pump configurations.

ARO conversion and service documentation also identifies this O-ring in PTFE diaphragm service packages for compatible 1-1/2 inch and 2 inch metallic pumps.

Maintenance Inspection

Inspect the O-ring during fluid-section maintenance for:

• Cuts or surface damage
• Flattening or permanent deformation
• Chemical damage
• Contamination
• Loss of sealing performance

Inspect the mating surfaces and grooves before installing the replacement seal to help prevent leakage or premature seal damage.

Ordering ARO Y220-230

Before purchasing, confirm:

• ARO part number Y220-230
• Complete pump model
• PTFE material requirement
• 1/8 inch x 2-3/4 inch OD dimensions
• Item 19 position where applicable
• Required replacement quantity

Using the exact ARO part number helps ensure the correct PTFE O-ring is selected for the compatible fluid-section assembly.