Corrosion resistant seal for compression couplings

摘要: An improved corrosion resistant seal for compression coupling devices includes threadably engageable male and female members. Each of said respective members has an insulating, moisture resistant, resilient, polymeric coating, such as a polyvinylchloride coating bonded to the metal substrate. Both member coatings terminate in annular resilient flange portions. portions extends radially its manner whereby engaging advancing results contact providing effective therebetween insulating that prevents galvanic chemical thereof. A further embodiment couplings continued beyond adjacent portion terminating threaded matching threads member. The completely engages when all extend over engage coating. is first provided by flanges initially