You have no items in your shopping cart.
Estimated delivery: June 8 – June 10
The Cherne 5" Stainless Steel Econ-O-Grip plug (part #273-358) is a chemical-resistant blocking plug for 5" pipe in petroleum and chemical environments. Nitrile rubber O-ring with stainless steel hardware. Rated for 2 PSI maximum — not for pressure testing. Fills the hard-to-find 5" size for industrial pipe blocking in corrosive environments.
Key Features
- Chemical-resistant nitrile rubber O-ring — resists petroleum and chemical degradation
- Stainless steel hardware — won’t corrode in harsh industrial environments
- 2 PSI maximum — low-pressure blocking only
- Not for pressure testing — for blocking and pipe covers only
- Wing nut expansion — no tools required
Technical Specifications
| Cherne Part Number | 273-358 |
| Nominal Pipe Size | 5" |
| Max Back Pressure | 2 PSI (low-pressure blocking only) |
| Seal | Chemical-resistant nitrile rubber O-ring |
| Hardware | Stainless steel plates and bolt |
| Chemical Resistance | Petroleum, chemicals, solvents |
| Pressure Testing | NOT RECOMMENDED — use rated test plugs for pressure testing |
Applications
Low-pressure pipe blocking in petroleum refineries, chemical processing plants, industrial facilities, and any environment where standard galvanized hardware or natural rubber would degrade. Not for pressure testing — the Petro Econ-O-Grip is a blocking and dust cover plug for chemically aggressive environments.
Questions on sizing or bulk pricing? Call (866) 514-3684 or email us — same-day shipping on in-stock items, tax-exempt purchasing for qualified accounts.


