J A Harrison - The UK's Leading Gasket and Seal Manufacturer. J A Harrison & Co was founded in 1900 and in this period has provided a manufacturing service to a wide range of industries for the following products: Manufactured Seals and Gaskets, Gland Packing PTFE Products, Industrial Textiles, Bellows, Compensators, Flexible Connections, Mechanical Seals, O Rings, Boiler Spares, Allied Products J A Harrison supply gaskets and seals to companies right across the globe.