C9 Rubber O-Ring Green
C9 Rubber O-Ring Green

C9 Rubber O-Ring Green

Price: $11.82
Unit price  per 
Shipping calculated at checkout.

These rings are for use with our LED bulbs to provide a more water resistant seal around the edge of the socket.

Material Rubber
Width 1 1/8"
Height 3/8"
Usage Indoor/Outdoor
Quantity 100
Bulb Type Accessory to C9 (Intermediate) Sockets

For CA Residents: Prop 65 Notice

Warranty and returns

Please test your lights when you receive them! Everyone is happier when we resolve issues quickly.

Warranty. Our warranty for all our products is 90 days of normal, seasonal use. If a product is defective or fails during the 90 days following receipt of your order, please contact us right away. We will work with you to troubleshoot the problem, and if the issue is not easily and quickly resolved, we will ll correct the situation.

Returns. You can return eligible products when you contact us within 14 days of receiving an order to let us know you are returning items from your order. We will provide you with addressing instructions. Customer is responsible for return shipping.

Eligible products have not been installed and are in their original packaging in like-new condition. If returned products are received within 45 days of receiving your order, there is no restocking fee. After 45 days, a 15% restocking fee will be deducted from your merchandise credit. No returns accepted after 60 days.

Upon receipt of your return, your account will be credited for the cost of the products. Shipping charges are not credited.

See our complete Shipping and Warranty page for return instructions and additional information.

Customer Reviews

Based on 6 reviews
Steve K.
Very nice

These seem like a very good idea to me. Very reasonably priced. Easy to install. You may have to give the bulbs a little extra turn to seat them. Very happy with them.

Works great with C9 shingle tabs

I burned through a ton of the LED c9 bulbs before investing in these. They are a bit time consuming but when I’m blowing $1.25 each bulb that blows, it’s worth it. I ended up having to unscrew each bulb to install with the shingle tabs anyway so 6 in one, 1/2 doz. in the other.

They work perfectly

These work great. I fitted them on my LED c9's that were purchased elsewhere. It is great knowing I have extended the life of the bulb by keeping extra moisture out. I would recommend testing the string (duh) after using these just to make sure you have screwed the light in all the way to make a solid connection. I had a few that needed an extra little twist.


Purchased these to use with my retro-fit LED bulbs. Hopefully will extend the life of my bulbs by keeping moisture out.

Ann B.
Good but not as pictured

The gaskets I got look different. I think they will work just fine but I looked at this picture to make sure I was installing them correctly. I installed them as they were pictured here but, as I thought about it, I realized for the different kind of gasket I was sent, they were upside down. I turned about 70 of them that I had already installed around and I think they will be great.

Kris M.
Work, but degrade by saltwater

I bought these in December of 2016 for C9 LED lights that are on every night for five hours, year round by saltwater. They do seem to keep the moisture out, but after a year, they have become gummy and no longer seal well. I wish they lasted a bit longer, and did not degrade by melting, but they are better than nothing. I am ordering 1000 more.


Shipping Policy

We are currently shipping Monday - Thursday with most orders placed before 1:00 CST shipping the same or next business day.

Orders cannot be canceled or changed once they are placed. 

Delivery Timeframe Notices Regarding Air Orders

Orders placed via ground service should arrive in 1-5 business days depending on your zip code. This estimate does not include weekends, Saturdays, or major Holidays.  

2-Day air orders shipped on Thursday do not arrive Saturday but should arrive the following Monday. Next-Day orders shipped on Friday do not arrive Saturday but should arrive the following Monday. No orders are delivered on the weekend and the weekend does not count as days in transit.

Due to these unprecedented times, UPS and FedEx do not guarantee any method of shipping, including Air Service.

To ensure prompt shipping verify that your order is correct. Please do the following checks:

1. Confirm bulb bases and cord sockets match. 
2. Confirm 18 AWG wire SPT rating matches the SPT rating of plugs.
3. For bulk C7/C9 bulbs and cords orders, don't forget gilbert plugs, if required.
4. Double-check the wire color on all strings lights.