Joint de collier de passage d'homme 16" Buna-N, Betts 3559BN
Product Images
Images are for representation only and may differ from the actual product.
Product Images
Images are for representation only and may differ from the actual product.
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.