In-stock parts
Order by 2PM MST
In-stock parts
Order by 2PM MST
Images are for representation only and may differ from the actual product.
Habituellement prête en 2 heures
2045 West Buckeye Road
Phoenix AZ 85009
États-Unis
Manhole gasket only — collar, cover, clamp ring and fastening hardware are not included.
The Betts 3559BN manway collar gasket is a 16-inch round, L-shaped gasket made from black Buna-N, also called nitrile. It fits the gasket position between the collar and cover in the matching Betts clamp-ring-style manhole, where the clamp ring secures the assembled joint.
Use the exact replacement gasket when servicing a worn or impaired manhole seal. This is the manhole gasket, not the smaller relief-valve gasket or a complete reseal kit. Check the existing part number and gasket profile as well as nominal size before selecting a replacement.
| Feature | Benefit |
|---|---|
| L-shaped profile | Seats in the matching collar’s gasket-retaining channel. |
| Separate replacement gasket | Allows the sealing component to be replaced during manhole service. |
| Specification | Detail |
|---|---|
| Manufacturer | Betts Industries |
| Part number | 3559BN |
| Nominal manhole size | 16 inch, round |
| Material | Buna-N (nitrile) |
| Color | Black |
| Profile | L-shaped |
Confirm gasket compatibility with the contents carried and operating conditions. Size alone does not establish material suitability. Inspect the collar lip and clamp ring before fitting the gasket; seat it flat and fully in its channel. Follow current Betts installation and clip-weld inspection instructions, replacing damaged or compromised components before returning the assembly to service.
| Check | What to confirm |
|---|---|
| Part and profile | Match 3559BN, 16-inch nominal size and the L-shaped profile. |
| Service conditions | Verify Buna-N suitability for the tank contents and operating temperature. |
| Mating components | Inspect sealing surfaces and clamp-ring condition; a new gasket does not correct damaged hardware. |
| Safe installation | Address residual pressure, tank contents, fall and pinch hazards; complete required assembly leak checks. |
Need help selecting the correct part? Contact UnitedBuilt through online chat, email parts@unitedbuilt.com, or call 602-253-7750 with your manhole model, existing gasket part number and application.
| Weight | 1.0 lb |
|---|