Pentair R172319 bottom o-ring for Rainbow 320 and 322 automatic chlorinatorsPentair Bottom O-Ring for Rainbow 320 and 322 Feeders, New Style, R172319 In stock$399
Pentair R172319 bottom o-ring for Rainbow 320 and 322 automatic chlorinators
Shop all Pentair

Pentair Bottom O-Ring for Rainbow 320 and 322 Feeders, New Style, R172319

Ask a questionMPN R172319
$399
In stock
Get volume pricing Request a quote

30 day returns · Easy, with prepaid labels provided

Quick overview

  • Genuine Pentair Factory part R172319, not an aftermarket ring cut to a similar size.
  • Fits 320 and 322 The bottom o-ring shared by both Rainbow automatic feeders.
  • New style This is the current version of the seal, which differs from the older ring.
  • Stops the drip A hardened or flattened bottom o-ring is the usual cause of a feeder that seeps at the base.
  • Cheap insurance Replace it any time the feeder is opened for service rather than reusing a tired ring.
  • Lubricate on fit O-ring lubricant on the new seal helps it seat and extends its life.
Full description and specifications ↓

Need a hand?

Bilingual support from pool professionals.
(888) 751-8084CallChat with a techChatEmail usEmail

Send us a message

A pool professional will get back to you, usually the same business day.

About Pentair Bottom O-Ring for Rainbow 320 and 322 Feeders, New Style, R172319, SKU RAI-451-4212. We will include it with your message.

We use your details to answer this message and nothing else.

Frequently bought together

Current item Pentair Bottom O-Ring for Rainbow 320 and 322 Feeders, New Style, R172319
Pentair

Bottom O-Ring for Rainbow 320 and 322 Feeders, New Style, R172319

$399
Pentair Rainbow 320 In-Line Chlorinator, R171096
Pentair

Rainbow 320 In-Line Chlorinator, R171096

$14499
Pentair Lid O-Ring, 3-3/4 in. ID (Viton), R172009
Pentair

Lid O-Ring, 3-3/4 in. ID (Viton), R172009

$999
Pentair Short Chlorinator Tube, 5/8" OD, R172091
Pentair

Short Chlorinator Tube, 5/8" OD, R172091

$1499
Pentair Rainbow 1/2-Inch Control Valve for Automatic Chlorine/Bromine Feeders, R172086Z
Pentair

Rainbow 1/2-Inch Control Valve for Automatic Chlorine/Bromine Feeders, R172086Z

$5299
Pentair Rainbow Lock Ring R172214
Pentair

Rainbow Lock Ring R172214

$2899
Pentair Rainbow Screen for 320 and 322 Automatic Chlorinator, 210396Z
Pentair

Rainbow Screen for 320 and 322 Automatic Chlorinator, 210396Z

$799
Subtotal

Similar products

Other products people compare with this one.

Pentair R01052 lock screw for Rainbow 320 and 322 automatic feeders Pentair Lock Screw for Rainbow 320 and 322 Feeders, R01052$499 Pentair R172221Z o-ring for the Rainbow Dynamic Series drain and vent valve Pentair O-Ring for Rainbow Dynamic Series Drain and Vent Valve, R172221Z$499 Pentair Rainbow R172375 lock screw for automatic chemical feeders Pentair Rainbow Lock Screw, R172375$499 Pentair Rainbow R172435 1 inch check ball for HC series feeders Pentair Rainbow 1" Check Ball, HC Series, R172435$499 Pentair Rainbow R172037 chlorine chamber for 300 and 320 series chlorinators Pentair Rainbow Chlorine Chamber for 300 and 320 Series Chlorinators, R172037$2499 Pentair Rainbow R18706 compression nut for 1/4 in. chemical feeder tubing Pentair Rainbow Compression Nut for Chemical Feeder Tubing, R18706$599 Pentair Rainbow R172034 saddle clamp for the Model 300 chlorinator Pentair Rainbow Saddle Clamp for Model 300 Chlorinator, R172034$1199 Pentair R172248Z 1/2 in. check valve for the Rainbow Model 320 automatic feeder Pentair 1/2" Check Valve, Rainbow Automatic Feeder 320, R172248Z$1499 Pentair R175009 half inch drain valve for Rainbow chlorinators Pentair 1/2" Drain Valve for Rainbow Chlorinators, R175009$2399 Pentair R172240 Rainbow feeder lid o-ring Pentair Rainbow Lid O-Ring, R172240$2499
Pentair Rainbow R172324 spring style 1/2 inch tube by tube check valve Pentair Rainbow 1/2" Tube x Tube Check Valve, Spring Style, R172324$3999 Pentair Rainbow R172064 parts bag for Rainbow chlorinator 300 Pentair Parts Bag for Rainbow Chlorinator 300, R172064$5399 Pentair R172321 feeder body for the Rainbow model 320 in-line automatic chemical feeder Pentair Rainbow Automatic Feeder 320, Body Only, R172321$5799 Pentair Rainbow R172274 compression nut for 1/2 inch chemical feeder tubing Pentair Rainbow Compression Nut, R172274$699 Pentair Rainbow R172032 chemical feeder tube fitting with nut Pentair Rainbow Chemical Feeder Tube Fitting with Nut, R172032$899 Pentair Rainbow R172224X black drain and vent valve Pentair Rainbow Drain Vent Valve, Black, R172224X$1099 Pentair R175251 1 inch suction screen for Rainbow HC series chlorinators Pentair Rainbow 1" Suction Screen, R175251$1099 Pentair Rainbow R172374 chlorinator lock spring Pentair Rainbow Feeder Lock Spring, R172374$1099 Pentair R171097 Rainbow chlorinator tube support spring Pentair Rainbow Tube Support Spring, R171097$1499 Pentair Rainbow R172323 quarter inch tube by tube check valve with compression nuts Pentair Rainbow 1/4" Tube x Tube Check Valve with Compression Nuts, R172323$2699

Product details

The Pentair R172319 is the bottom o-ring, new style, for the Rainbow 320 and 322 automatic feeders. It is the genuine Pentair part.

What it seals

The bottom of a Rainbow feeder is under constant pressure and constant chemical exposure, and the o-ring at that joint is what keeps the water inside. Over a few seasons it hardens, takes a set, and eventually weeps. A slow drip at the base of the feeder almost always traces back to this ring rather than to the body or the fittings.

Fitting notes

This is the new style ring. On an older feeder, compare it against the seal you remove before you reassemble. A thin film of o-ring lubricant on the new ring helps it seat and slows the hardening, and it is worth replacing the ring any time the feeder is opened for other service.

Specifications
Brand Pentair
Manufacturer part number R172319
UPC 788379005290
Type Bottom o-ring
Style New style
Fits Rainbow 320 and 322 automatic chlorinators
Shipping weight 0.02 lb
Ships Parcel

Request a quote

Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.

Request a quote

From Pentair

Your trusted source for all things pool. Pentair

Pentair equipment

Pentair SuperFlo VS 1.5 HP Variable Speed Pool Pump, EC-342001 Pentair MasterTemp 400 Natural Gas Pool Heater, EC-462028 Pentair Clean & Clear Plus 420 sq ft Cartridge Pool Filter, EC-160301 Pentair IntelliConnect Control & Monitoring System with Wi-Fi, EC-523317
Shop Pentair equipment

Genuine Pentair parts

Pentair Genuine OEM Seal Kit for WhisperFlo and IntelliFlo Pool Pumps, 356198 Pentair Genuine OEM High Flow Manual Air Relief Valve, 98209800 Pentair Genuine OEM FNS Plus Element Assembly Complete, 48 Sq Ft, 59023400 Pentair Genuine OEM MasterTemp/Max-E-Therm 6-Button Control Board Kit, 461105Z
Shop Pentair parts
Pool lighting: a backyard pool and spa lit in blue and green at nightPool water treatment: three people floating on rings in clear blue water, seen from abovePool cleaners: a toddler in flower sunglasses laughing in a yellow ring, held by her mother
Pentair makes pumps, filters, heaters, salt chlorinators, cleaners, lighting and automation for pools and spas.Shop all Pentair

Customer reviews

More from Pentair

Pentair SuperFlo VS EC-342001 1.5 HP variable speed pool pump, front view Pentair SuperFlo VS 1.5 HP Variable Speed Pool Pump, EC-342001$1,48900 Pentair SuperFlo EC-348190 single speed pool pump, 1 HP, 115/230V Pentair SuperFlo 1 HP Single Speed Pool Pump, 115/230V, EC-348190$74800 Pentair WhisperFlo VS EC-011533 2.6 THP variable speed pool pump, top view Pentair WhisperFlo VS 2.6 THP Variable Speed Pool Pump, 115/208-230V, EC-011533$1,79900 Pentair 262506 HiFlow 1.5 in. six way clamp style multiport valve Pentair Genuine OEM HiFlow Valve 1.5 in. 6-Way Clamp Style, 262506$20399 Pentair EC-520556 IntelliChlor 110/220V power center Pentair 110/220V IntelliChlor Salt Chlorine Generator Power Center, EC-520556$79900 Web Price Pentair 523769 IntelliChlor Plus and LT replacement sensor board Pentair IntelliChlor Plus and LT Replacement Sensor Board, 523769$39299 Pentair 350305S 3.2 kW 10 pole variable speed motor for IntelliFloXF and IntelliFlo 2 VST pumps Pentair 3.2 kW IntelliFloXF VSF, VSF, VS+SVRS, i1, i2 Motor, 350305S$78199 Pentair 523735-EC IntelliChlor Plus40 salt chlorine generator cell Pentair IntelliChlor Plus40 Salt Chlorine Generator Replacement Cell, 40,000 Gallons, 523735-EC$1,81900 Web Price Pentair Rainbow 320 in-line chlorinator R171096, front view Pentair Rainbow 320 In-Line Chlorinator, R171096$14499 Pentair 190003 tank clamp kit with tension control for Clean and Clear Plus, FNS Plus and Quad DE filters Pentair Genuine OEM Clamp Kit with Tension Control, 190003$30199
Pentair IntelliChlor LT25 salt chlorine generator cell 523747-EC Pentair IntelliChlor LT25 Salt Chlorine Generator Cell, 25,000 Gallons, 523747-EC$1,14900 Pentair IntelliFlo VS+SVRS variable speed pool pump, EC-011057 Pentair IntelliFlo VS+SVRS Variable Speed Pool Pump, EC-011057$2,39900 Pentair 170145 cartridge pack for Sta-Rite System 3 S7M120, inner and outer cartridges Sta-Rite 170145 System 3 S7M120 Large and Small Cartridge Set, 25021-0200S and 25022-0201S$46499 Pentair 261055 SM-20-3 2 in. side mount multiport valve kit, front view Pentair 2 in. Multiport Valve Kit for Side Mount Sand Filters, SM-20-3, 261055$29999 Pentair 523770 IntelliChlor Plus replacement controller (HMI), black Pentair IntelliChlor Plus Controller Replacement (HMI), Black, 523770$38399 Pentair 261152 SM20-2 2 in. side mount multiport valve kit for DE filters Pentair 2" Valve Kit Multiport, Side Mount DE Filters SM20-2, 261152$29799 Pentair 357149 WhisperFlo and IntelliFlo volute housing replacement kit, front view Pentair WhisperFlo and IntelliFlo Volute Housing Replacement Kit, 357149$28799 Pentair MicroBrite Color LED pool light EC-620425, 12 volt, 14 watt, with 100 ft cord Pentair MicroBrite Color LED Pool Light 12 Volt, 14 Watt with 100' Cord, EC-620425$61900 Pentair 59023400 FNS Plus 48 sq ft complete DE grid assembly Pentair Genuine OEM FNS Plus Element Assembly Complete, 48 Sq Ft, 59023400$39399 Pentair Amerlite EC-602128 500W 120V inground pool light with stainless steel facering Pentair Amerlite Pool Light for Inground Pools with Stainless Steel Facering, 500W 120V 50' Cord, EC-602128$43900 Web Price

Questions and answers

What people ask about this product, answered by our pool techs.

Which feeders does it fit?
The Rainbow 320 and the Rainbow 322 automatic chlorine and bromine feeders.
What is the difference between the new style and the old one?
Pentair revised the bottom o-ring, and this listing is the new style version. If your feeder is an older unit, match the ring you take out against the one you receive before assembly.
My feeder is leaking at the bottom. Is this the fix?
It is the first thing to check. A bottom o-ring that has gone hard, flat or cracked will seep, and the ring costs a fraction of the time spent chasing the leak anywhere else.
Should I use lubricant on it?
Yes. A thin film of o-ring lubricant helps the seal seat properly and keeps it pliable, which extends how long it lasts.
Ask your own question