Profile: Colonial Seal Co. is a distributor of metric oil seals and hydraulic seals. Our company is accredited with ISO 9001: 2000 certification. Our primary products include oil seals, custom metal-cased shaft seals, hydraulic seals, custom lathe-cut seals, mechanical seals and custom seal kits. Our custom seals provide maximum bearing protection and superior sealing performance. Our standard external seals are used in stationary and housing rotate applications.