Pentair Legend 4-Wheel O-Ring 2-Pack for Wall Fitting | E21

The Pentair Legend 4-Wheel O-Ring 2-Pack for Wall Fitting (E21) includes two replacement O-rings designed for use with the wall fitting quick-disconnect connections on Pentair pressure-side pool cleaner systems. These O-rings create a watertight seal between the cleaner hose and wall fitting, helping prevent leaks, maintain proper water pressure, and ensure reliable cleaner operation.

Compatible Pool Cleaners & Systems

Pentair Kreepy Krauly Legend Pressure-Side Pool Cleaner
Pentair Kreepy Krauly Legend II Pressure-Side Pool Cleaner
Pentair Legend Platinum Pressure-Side Pool Cleaner

Key Features

Pack of 2 replacement O-rings for wall fitting quick-disconnect
Helps form a secure, leak-resistant connection
Durable material designed for underwater use
OEM replacement for worn, cracked, or compressed O-rings
Essential for maintaining proper water pressure and suction

Specifications

Brand: Pentair
Part Number: E21
Package Quantity: 2 O-rings
Component: Wall fitting quick-disconnect seal
Application: Pressure-side automatic pool cleaner wall fittings

Application & Use

These O-rings are installed in the groove of the wall fitting quick-disconnect where the cleaner feed hose connects. A proper seal prevents water leakage and helps maintain the correct pressure needed for optimal cleaner propulsion and steering. Regularly inspect these O-rings during cleaner servicing and replace them if they appear cracked, flattened, or brittle to avoid performance issues.

Related Products

Maintenance Tips

Check the condition of wall fitting O-rings whenever you service the cleaner or notice water leakage around the wall connection. Replacing worn or damaged O-rings helps maintain a secure seal and supports consistent cleaner performance.

Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

We do not ship on Saturday or Sunday.
Orders totaling more than $300 will require signature confirmation upon delivery.
We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
Expedited shipping options are available at checkout.

Return Policy:

Products that are received damaged will receive a refund in store credit.
Most products are eligible for return within 30 days of receipt, except where noted below.
To initiate a return, please complete an RMA form prior to sending your item back.
Original shipping costs are non-refundable and will be deducted from the return credit.
Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
Some returns will be charged an automatic 15% restocking fee.
We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
Please complete the return form to receive your RMA number and return shipping label.
Chemical products are not eligible for return under any circumstances.
The Pentair Colorsync 618031 is not eligible for return.
Pool cleaners are not eligible for return.
Opened seals and o-rings are not eligible for return.
Capacitors are not eligible for return.
Plastic popup tools are not eligible for return.
Automation components and circuit boards are not eligible for return.
If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.