Gasket Kit for C-360

Product No. PR11942-01


Buy Now Find a Store In Stock
This gasket kit for the C-360 ONLY fits the C-360.

If you are looking for the Magniflow 360 Gasket Kit, check this link.

Gasket Kit for C-360 is rated 4.2 out of 5 by 59.
Rated 5 out of 5 by from Stops the leaks It works, My filter was leaking and after the install, all leaks stopped!
Date published: 2014-12-04
Rated 4 out of 5 by from C-350 Gasket Replacement Had leak, gasket fixed leak, expensive to ship....
Date published: 2014-09-18
Rated 5 out of 5 by from Product was great Gasket kit was just what I needed but the shipping was outrageous it was the same price as the kit
Date published: 2014-08-16
Rated 3 out of 5 by from good seals Great seals and can order in bulk. One down side is I usually only meed yo replace one seal so then I have all the others wasted. Wish I could just buy the larger seal by itself
Date published: 2014-08-15
Rated 2 out of 5 by from Why did my C-360 Filter leak? After one year my filter began to leak around the power head after doing routine maintenance. I bought this gasket set to try to salvage the filter. Internet search reveals other people having same issue.
Date published: 2014-08-14
Rated 5 out of 5 by from Solved my problem! New o-rings will solve most micro-bubble noise problems on the c-360 canister. It solved my problem right away. Make sure o-rings are lubricated. I managed to damage one set of new o-rings even after lubricating. Install carefully and your filter will be near-silent again!
Date published: 2014-08-04
Rated 5 out of 5 by from Product I needed to correct a problem My Marineland filter was leaking and not running correctly. Product arrived in a week, no more leaks and filter is now running flawlessly.
Date published: 2014-07-28
Rated 5 out of 5 by from A must have I own a marineland c360 canister filter and as retired auto repair shop owner I can tell you how easy it is to pinch or cut a o ring. I ordered this as a back up since I don't want to not use my filter for a week waiting for an o ring.
Date published: 2014-07-27
Rated 5 out of 5 by from Marineland has awesome customer service. I called and explained my issue. Right away their customer service rep was asking questions about how they can help me out to ensure I have a great experience. They went above and beyond what I was expecting. After this experience, I couldn't imagine going with a different brand. Marineland is a great brand and has great representatives helping customers.
Date published: 2014-07-02
Rated 5 out of 5 by from Exactly what was needed. Pump was noisy, leaking, blowing bubbles. New gaskets cleared all the problems. Am happy with product and price.
Date published: 2014-05-31
Rated 5 out of 5 by from replacing old O-rings stops noise and leaks This is the right product if you have been running your filter for a few years and it is starting to be noisy, sucking in air, and/ or leaking. The new large o-ring was all we needed for the repair.
Date published: 2014-05-21
Rated 1 out of 5 by from Did not fix leaks I have 3 units that all started leaking so I had stopped using them. Was told to use plumbers silicone by support but that didn't help either. Decided to buy this kit as it didn't cost much. All it did was diminish the leaks but it is still leaking.
Date published: 2014-05-12
Rated 5 out of 5 by from Replacement gaskets Worked as advertised. Replacement gaskets stopped my c360 from sucking air.
Date published: 2014-04-25
Rated 5 out of 5 by from Exactly what I needed at a great price. Contained all the o-rings used in the C-360. Was very easy to replace them all only to find out the o-rings wasn't the problem.
Date published: 2014-04-24
Rated 5 out of 5 by from The product fixed the problem I had with the filter leaking The items were exactly as stated on the web page. I appreciate the fact that the company has the needed items to keep their products operating as they should.
Date published: 2014-03-15
Rated 5 out of 5 by from It fixed my problem! i received it fast! no more water leaking or air sucking .
Date published: 2014-02-20
Rated 5 out of 5 by from Exactly what I needed I've been running my C360 for 4 years. It started to show some age a few weeks ago, pulling in air shooting bubbles out the outflow every 30-45 seconds. I knew there was a leak because it would continually shoot air for hours on end. I ordered this gasket kit which IMO is cheap and exactly what you need for regular maintenance. After a certain amount of time the rubber just becomes rigid from the heat of the motor and need replacing. I got mine after 4 days of placing an order. Replaced all gaskets and now she is running smooth. Perfect.
Date published: 2014-02-18
Date published: 2014-02-13
Rated 5 out of 5 by from worked perfectly Got rid of all the air sucking and water leaking from an very old C360
Date published: 2013-10-29
Rated 4 out of 5 by from Great product I Really liked the part's That fit and was able to get for my Filter GOOD PRICE ! & and GREAT SHIPPING TIME !
Date published: 2013-08-13
Rated 1 out of 5 by from the product is ok it's only O ring products. I did not have problem with them
Date published: 2013-07-10
  • y_2018, m_11, d_15, h_1
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.9
  • cp_3, bvpage2n
  • co_hasreviews, tv_0, tr_59
  • loc_en_US, sid_PR11942, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_marineland

Why is there not the smaller o-ring?

I made a foolish mistake and tried to replace the smaller o-ring on the hose connector with o-rings from this C360 o-ring package and was not able to refit the connection again. Why is this lower o-ring not already supplied or even offered and how can I go about getting another because my filter is now leaking instead of just sucking air?
Asked by: MrProbst
When I asked Marineland the same question they said that the o-ring in the kit was for the valve block. I think they are trying to use a larger diameter o-ring to create a tighter fit. I also have a filter that will not go back together. Support just tried to tell me that I did not have the locking mechanism lined up properly.
Answered by: Filterisleaking
Date published: 2014-11-22

Continuous issues with main gasket

I replaced the gasket on my C-360 about 6 months ago. I purchased the filter about 6 months before that. Is there some other issue I'm unaware of that would cause me to replace this part every six months??
Asked by: Frustrated1
If you tend to maintain the filter frequently, as recommended, but do not use a lubricant on the o ring each time, you can get excessive wear on the o ring. BREX
Answered by: BREX
Date published: 2014-07-22

How can I stop my C360 from leaking?

I just put a new gasket kit on 2 weeks ago because it was leaking between the bottom canister and the head unit. It's still leaking from there as well as the output part of the valve block.
Asked by: JoeOwen
Sounds like it is more of a valve block issue. The valve block itself has 4 o rings on the nozzles that go into the motorhead, plus o rings inside of it, that you cannot access. If you purchased a gasket kit, it would have come with the o rings for the valve block as well. You can try replacing those or replace the whole valve block. BREX
Answered by: BREX
Date published: 2014-07-22

where do i find instructions on changing o rings, and how many are on a 360c canister filter

Asked by: Krisbrown
I'm not sure that we have instructions on changing the o rings, unless some come with the o ring kit. It's basically just pull them off, put them on, and lube with silicon lubricant. It has a large one around the motorhead, and 2 each on each of the nozzles on the underside of the valve block. There is also one on the port that extends down from the motorhead and connects to the top tray. BREX
Answered by: BREX
Date published: 2014-05-20

Canister Filter noise

I'm getting air into my C-360 filter from somewhere. It has been making a sort of rhythmic sucking noise then I can see the air moving through the outlet tube and into the tank. Will replacing the gaskets solve this? Also, when I use the primer, I can sometimes feel water escaping from it - not a lot but there is some. Is that normal? I purchased the filter new last October, I think. So, it's not too old. Thanks for your time.
Asked by: Seres
I had the same problem with mine on my 75 gal tank. There was a small leak around my o-ring that once I got my ear close to it I could just barely hear. I opened it back up and lube the o-ring again and this time it sealed.
Answered by: Dragon58401
Date published: 2014-08-23

Gasket Kit for C-360

Please, I am desperate need of this and it says that you are stock. can you give me any idea of when this will be restocked? or if? I love my filter and use it in a tank that houses a very large turtle and our water will stink very soon if not replaced. Please let me know something PLEASE Thanks Gail
Asked by: rapunzelgail
We just received some today, so they should become available by the end of the week, once they go through inspection. B-Rex
Answered by: BREX
Date published: 2014-03-26

Where does the 2nd small o-ring & the 4th gasket go?

I've been reading through the questions, I see someone asked where the 4 gaskets go and the answer said the trays minus the top tray. That = 3 gaskets, where does the 4th go? Same with the small o-rings, there was an answer saying the tube that comes down from the motor head but that is only 1 small o-ring, where does the 2nd go? Is there extra parts in this kit? Some instructions to go with the kit or somewhere on the website, or with the filter when you purchase would be great. I'm new to this and have been searching for over an hour trying to figure out how to replace the gaskets and o-rings.
Asked by: Dee1981
Thanks for the reply however there is only one nozzle that comes out of the valve block? Both small o-rings go on the one nozzle? It only came with one o-ring on it.
Answered by: Dee19812
Date published: 2014-07-26

What can cause leaks from the motor head. I suspect the O-ring but it is recently bought.

C-360 canister filter. I think everything is postioned and seated inside ok, but I wonder if it requires a 4th tray gasket (at the topmost stacknflow tray-the ceramic tubes)? C-360 is positioned below 90 gallon tank about 48 inches. There are no other leaks at the connections or tubes. Thank you.
Asked by: Ship
There is no gasket on the top tray, but check to make sure there is an o ring on the little tube that extends down from the underside of the motorhead and connects to the top tray. Is there silicone lubricant on the o ring? It was supposed to be put on the o ring at the manufacturing plant. Please call us if you cannot resolve this. 1-800-322-1266. B-Rex
Answered by: BREX
Date published: 2014-03-20

Gasket Kit "PR11942" for C-360 Canister Filter

When is this kit going to be available? I have been trying to order this kit for over a month now and it has been "Out of Stock". Your had earlier said it would be available the 1st. of this month however it is still not available.
Asked by: danbailey
At this point, we do not know; the ship date has not been determined. They have come in more than once, and gone back out. I did hear that has them. B-Rex
Answered by: BREX
Date published: 2014-03-18

O rings for my c360 filter

How can I get these O rings for my c 360 filter... need 2 of them
Asked by: Tankmatesllc
I understand has them in stock. We are out of stock until further notice. B-Rex
Answered by: BREX
Date published: 2014-03-14


Where can I get the head unit only? I own 5 of these canisters and love them. The one that is leaking is due to the fittings where the hose block joins. I have tried the same head on different hose blocks and it does not matter. This one still allows water to get in the head unit and leak out of the seam. Not sure the gasket kit can fix this. Need the head unit.
Asked by: rgpatton
The motorhead is not available separately. We would definitely recommend a new o ring and some silicon lubricant first, but otherwise, you would need to replace the whole unit, if the motorhead is the issue. There is a 3 year warranty. if it is within that warranty, give us a call. Make sure you have your lot code and/or receipt. 1-800-322-1266. B-Rex
Answered by: BREX
Date published: 2014-03-03

how do i get a gasket for c360 canister filter? mine is leaking and sucking air.

Asked by: bbtlr
Right now they are out of stock until the first or second week in March. However, has it in stock I believe. B-Rex
Answered by: BREX
Date published: 2014-02-24

C360 Valve block gaskets

Where do you get the valve block gaskets for the C 360 canister filter?
Asked by: Merv 49
Those come in the gasket kit with the large o ring and tray gaskets. It is out of stock until early March, unfortunately. B-Rex
Answered by: BREX
Date published: 2014-02-19

where do the two small o rings on the c360 gasket kit go?

Asked by: braunston
Answered by: Anonymous
Date published: 2014-06-14


I have two c 360 units. one is for a 70 gallon freshwater aquarium and the other for a 30 gallon salt water aquarium.
Asked by: smack
There is a seal that is not air-tight. This would cause both air and water leaks. If your filters are less than 1 year old, try applying silicone lubricant all the way around the O-ring cover seal and also around the O-rings on your valve block. If your filters are over a year old, we recommend replacing these gaskets (item # PR11942.) For further assistance, please contact our consumer relations department at 1-800-322-1266 Mon. - Fri. 7:30 AM - 5:00 PM. Marineland2
Answered by: BREX
Date published: 2014-01-28

Spare Parts

My C-360 has sprung a leak. When will these be in stock?
Asked by: Bobbby
We are expecting them in the week of Jan. 20. Please call technical support for assistance with your filter. 1-800-322-1266. B-Rex
Answered by: BREX
Date published: 2014-01-16

why is it so hard to find c-360 canister gasket kit?

Asked by: rivoth
We have been out of stock on them, but are expecting more in the week of 1/20/14. B-Rex
Answered by: BREX
Date published: 2014-01-14

When will it be in stock?

Any idea when they will be in stock? I need the following for a Marineland C-360 Valve block Impeller Assembly Gasket kit
Asked by: Ray1961
They are scheduled to arrive sometime this week, but of course, they have to go through inspection, etc, so the earliest would be next week, the week of Jan. 13-17. Brex
Answered by: BREX
Date published: 2014-01-06

Marineland C-360

I have a C-360 and I lost one of the 4 gaskets that seal each tray together, and I cant find the gasket kit anywhere not even your website, so my question is will the C-160/C220 and C-530 gasket be the same size as the C-360, like i said all I need is one of the 4 gaskets that seal the stacking trays.
Asked by: css49017
The gasket kit that you are in need of is item # PR11942. We are unfortunately on backorder for that kit, expecting more in stock around 1/7/2014. Should you need the gaskets sooner, does have this item currently in stock. Unfortunately, the gaskets only come as a complete set and we do not have just the stacking tray gaskets by themselves. Marineland2
Answered by: BREX
Date published: 2013-12-27

Are you out of the C-360 Gasket Kits already?

I read the answer from Brex that they were back in stock on 12/11/13 but I checked today (12/17/13) and they are again not available.
Asked by: PeggyDavis
Believe it or not, yes, we are. I spoke with the person in planning. Because of the length of time they were out of stock, there were a number of orders that had been placed on backorders from our distributors, etc, and they shipped as soon as the gaskets came in. We do have another shipment due right after the first of the year. You might also check with some of the online vendors, like or over the next few days to see if they come back in stock on their sites. Brex
Answered by: BREX
Date published: 2013-12-18

When will the product be in?

I must have missed you guys getting them in because I have been waiting a month now.
Asked by: BeeEl
They came back into stock this week, and are available again. Brex
Answered by: BREX
Date published: 2013-12-11

If silicon lubricant is required for regular maintenance, why was it not included with the filter?

It was also not mentioned in the user's manual and not available to purchase on your site.
Asked by: tetraquarium
Using silicon lubricant to keep canister o rings in good shape is a known part of maintenance within the industry and hobby. All canisters or any other equipment (such as powerheads or utility pumps) that have o rings in their design require such lubrication regularly or you run the risk of having the o rings fail sooner than normal. We used to place a very small tube of it (enough for one application) in the box with the filter for folks to start out with, but instead, we now do the initial application ourselves, directly to the o ring on the motorhead. Silicon lubricant is readily available through local fish stores. As we do not make a lube for retail sale, we do not offer one on our site. BREX
Answered by: BREX
Date published: 2013-12-05

C-360 Gasket Set When will this item be stocked?

Asked by: Anonymous
We expect this item to be arriving in our warehouse sometime this week. After a standard quality inspection, they will be made available. BREX
Answered by: BREX
Date published: 2013-12-05

When will the gasket/o-ring kit be available for the c-360? It is twice as expensive with other retailers.

Also, why do the canisters not come with extras since they seem to have a habit of causing leaks in less than a year of use?
Asked by: tetraquarium
The main reason o rings go out is because hobbyists do not place silicon lubricant on them after every maintenance. We expect o rings to come in sometime later this week so they should be available again by next week. BREX
Answered by: BREX
Date published: 2013-12-03

when will you have gasket kit for c350

Asked by: louie
We do not make a C350. We make a C360 and a Magnum 350. Gasket kits for both filters are very much available and in stock. BREX
Answered by: BREX
Date published: 2013-10-22

Any ETA on the O-ring kits?

It seems like these have been out of stock for a while - any update on an ETA? I will have to shut down my aquarium if I can't fix the ongoing, worsening leak problem we've had with the C-360.
Asked by: mnelsonx
It is due in around the week of October 21. I show that, one of our vendors, has it in stock though. BREX
Answered by: BREX
Date published: 2013-10-22

Where do the 4 o-rings go?

Asked by: Gina760
I believe you are referring to the gaskets which seat between the trays of your filter (minus the top tray which does not have one.) Regards, Marineland2
Answered by: BREX
Date published: 2013-10-22

Is this a full gasket kit for the C-360's with the head leakage problems?

Asked by: Jaysensd
It is a full gasket kit for the C-360, period. It will come with the large o ring, the o rings on the underside of the valve block, and the tray gaskets. You can also have a cracked valve block if you are leaking, but the gaskets are a good place to start. BREX
Answered by: BREX
Date published: 2013-10-22

Gasket for C-360

Do you expect the gasket kit for C-360 to be back in stock soon? I can't find it locally.
Asked by: Thos
They are due in the last week of this month. BREX
Answered by: BREX
Date published: 2013-10-22

Gasket Kit for C-360

This has been out of stock for a while. I need one asap. When will they be in stock? thanks, Brian
Asked by: lowtemp
We are expecting some in sometime this month. We do not have an exact date at this time. BREX
Answered by: BREX
Date published: 2013-10-22
  • y_2018, m_11, d_15, h_1CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.9
  • cp_3, bvpage2n
  • co_hasquestionsanswers, tq_68
  • loc_en_US, sid_PR11942, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_marineland