Profile: J A Harrison & Co., (Manchester) Ltd. specializes in manufacturing gaskets and seals. We are an ISO 9001:2000 certified company. Our products include gland packing, PTFE products, industrial textiles, compensators, flexible connections, mechanical seals, O rings, boiler spares, and allied products. Our cork rubber is used for noise vibration control. The vibration isolation performance of elastomers is significantly improved when air is added to the material. In vibration control, the variable amount of air added to an elastomer allows control of its resilience, internal damping, load-bearing capacity, temperature behavior, and vibro-acoustic performance.