The Cherne 4" Stainless Steel Econ-O-Grip plug (part #273-348) is a chemical-resistant blocking plug for 4" pipe in petroleum and chemical environments. Nitrile rubber O-ring with stainless steel hardware provides chemical and corrosion resistance. Rated for 2 PSI maximum — not for pressure testing. Use in refineries, chemical plants, and industrial facilities where standard plugs would degrade.

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	273-348
Nominal Pipe Size	4"
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.

Tapón Econ-O-Grip® Cherne® de 4" de acero inoxidable