Possible Clues:

• This might be blown, figuratively
• Without question, needed to obtain seal for joint
• Blow it and you see red
• Flat metal seal between tow surfaces as of engine
• Request accepted, be given seal
• Request to obtain external sealing device
• Spare part for motorist to obtain without question
• One may question how to get around it for a seal
• Seal (in, eg, engine)
• Get around to pop the question and seal it