A NORTH West safety seal firm is to supply two major oil rigs which are being built at a cost of £300m.Bury-based Roxtec has signed a major deal to supply the offshore specialist SeaDragon to build two semi-submersible drilling rigs.Roxtec will supply more than 1,000 cable and pipe transits for each rig.Graham O’Hare, Roxtec’s UK managing director, said the deal showcases how effective the firm’s Multi-Diameter seals are in the oil and gas sector.He said: "“In a highly safety conscious and dangero......for the full story register now for free or login below...