The Manufacturer of Seal-R™ Products

Products designed by installers to provide safety and flexibility.

Seal ittight!easy!fast!

The Seal-R™ Ring and the Seal-R™ Lid

About Us

BrenLin Company, Inc. is a family owned and operated manufacturing business established in 1998. We specialize in heavy-duty plastic septic system products and design all products in-house and manufacture them in the USA.

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Why Choose Seal-R™?

Specifically designed using corrugated dual-wall pipe for the riser material due to the benefits of limited joints and the ability to cut to the exact length in the field. Seal-R products are polymer based, offering both durability and longevity.

Reduce your installation labor expense.

Using Seal-R products is the ideal way to reduce your installation labor expense. It saves time and labor on later access needs, too!

Get an exact height each time.

Our unique plastic riser pipe will give an exact height each time. Select the correct height of riser without using precut sections that may or may not fit your situation. Try our system and you will never have to carry concrete pipe and lids again.

Save time.

Our products do not require having to assemble multiple sections. The ring and riser pipe can be installed in minutes using a polyurethane foam sealant.


We now offer customization of our lids and the ability to add your company information.

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Backed by Our Customers

"We have been working with Brenlin for the past 4 years. They are the only company we trust to provide our septic covers. Great customer service and the products are the best we have seen out there in our line of work. Tom is always very helpful and willing to go the extra mile to make sure we have the inventory we need when we need it!"

Cindy T. - Google Review