All purpose, high performance pipe joint and gasket sealing compound for use on metals including Aluminum, Black Iron, Brass, Copper, Stainless Steel, Galvanized Steel and on Plastics including PVC and CPVC. Block sets up quickly and dries to form a very tough, yet flexible seal which will not harden, crack, crumble or shrink. Provides leak-proof resistance to high pressure, temperature, expansion, contraction and extreme vibration. Joints can be disassembled easily, without damage to pipe or equipment. Block can be removed from skin or clothing, tools or equipment with isopropyl alcohol. Ideal for sealing jobs in plumbing, heating, piping, air conditioning, refrigeration, automotive and innumerable industrial applications. Block is applied easily with the natural bristle brush even at temperatures as low as +20 deg F and performs over a temperature range of -90 deg F to +450 deg F. It provides leak proof hydraulic resistance to 12,000 psi and withstands gas pressure to 2,600 psi. Block contains no lead.

Hercules® Block™ Thread and Gasket Sealant, All Purpose, Can, 0.5 pt, 0.8 lb Net Weight, Composition: Rosin, Castor Oil, Isopropyl Alcohol, Talc, Magnesium Carbonate, Mica, Titanium Dioxide, Silica, Amorphous, Fumed, CrystalLine Silica (Quartz), Liquid/Paste, Blue, Odor/Scent: Alcohol, -90 to 450 deg F, 1.29 Specific Gravity, 170 deg F Flash, 183 g/L VOC, 12000 cP Viscosity Rating, Flammability: 2, Applicable Materials: Aluminum, Black Iron, Brass, Copper, Galvanized Steel, Glass, Monel, PVC, Stainless Steel

• Quickly forms a tough, flexible and leak-resistant seal
• Use for joints, threads, valves, flanges, gaskets, pumps and tanks
• Performs over a range of -90 through 450 deg Fahrenheit on steel pipe
• Can be used with hydraulic pressure up to 12,000 psi and gas pressure up to 2,600 psi
• Screw cap can with brush

• Catalog https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Oatey_25215_Catalog.pdf
• SDS https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Oatey_15703_SDS.pdf
• Specification Sheet https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Oatey_15703_Specification_Sheet.pdf