Seal the Deal with the Ultimate 1-1/2" Uniseal Grommet for Tank Connections
The 1-1/2" Uniseal Grommet creates a reliable, watertight seal for tank fittings using 1.5" PVC Schedule 40 pipe. Designed for easy installation with a 2.5" hole saw, it fits tank walls up to 3/8" thick and is proudly made in the USA for lasting durability. Ideal for black water, gray water, or custom tank projects in your RV.---
1-1/2" Uniseal Grommet - Black U150
This grommet will connect your PVC Schedule 40 pipe to your tank and create a seal on your tank that will last!
Fitting Specifications:
- Pipe ID - 1.5" (38mm)
- Pipe OD - 1.90" (48mm)
- Hole Saw size: 2.5" (63mm)
- Up to 3/8" Wall Thickness. (9mm)
Sold in Each and made in the USA
Installation tips: Measure twice and after cutting your hole, smooth out any rough edges to get the best seal.
| Color | Black |
|---|---|
| Hole saw size (inches) | 2.5 |
| Hole saw size (millimeters) | 63 |
| Pipe inner diameter (inches) | 1.5 |
| Pipe outer diameter (inches) | 1.9 |
| Maximum wall thickness (inches) | 0.375 |
| Pipe inner diameter (millimeters) | 38 |
| Pipe outer diameter (millimeters) | 48 |
| Maximum wall thickness (millimeters) | 9 |
- What size pipe does the 1-1/2" uniseal grommet fit? The grommet fits PVC Schedule 40 pipe with an inner diameter of 1.5 inches (38mm) and an outer diameter of 1.90 inches (48mm).
- What size hole do i need to cut in my tank to install this grommet? You need to cut a 2.5 inch (63mm) hole in your tank to install the grommet properly.
- What is the maximum wall thickness of the tank that this grommet can seal? This grommet can seal tanks with a wall thickness of up to 3/8 inch (9mm).
- Is this 1-1/2" uniseal grommet made in the usa? Yes, this product is made in the USA.
- Do you have any installation tips for this uniseal grommet? Yes, measure twice before cutting your hole, and smooth out any rough edges after cutting to ensure the best seal.
Need Fittings Installed on This Tank?
Use our free Custom RV Tank Builder — visually place fittings, get an instant price, and order with professional installation included.
100% Authentic OEM Parts
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.