18″ Seal-R® Adapter Ring
The Seal-R adapter ring is designed to sit on the tank and attach the riser to the septic tank. The Seal-R adapter rings design makes a watertight seal to prevent any water infiltration.
- Product Size: 18"
- Measures: 27" OD & 16" ID
- Covers Openings Up To: 19.5" x 19.5" square hole
- Weight: 9 lbs
- Item Code: 18R
Please request a quote for current pricing. Bulk pricing is available.
Built to be specified as part of the Seal-R® riser system, these standard sizes support both residential and light commercial septic configurations where fit and seal integrity matter.
Need help determining the right size?
Contact us directly to help you select the correct cover diameter based on riser dimensions, tank configuration, and installation requirements.