These Building Construction Rubber Seals are Durable & Weather-resistant. These rubber seals have excellent finish, dimensionally accurate and longer functional life. Gold Seal Engineering Products Pvt. Ltd. Manufactures Building Construction Rubber Seals. Gold Seal Engineering Products Pvt. Ltd. Is an ISO 9001:2000 certified company. Gold Seal Engineering Products Pvt. Ltd. Manufactures extruded and moulded rubber/polymer sealing systems for automotive and industrial application.