Related Clues:

• Weatherproofing stuff
• Caulk, for example
• Dryer's companion
• Load-bearing device?
• Faucet insert
• Metal disc for hawser
• Ring under a nut
• Ring placed between two surfaces to prevent leakage, as in tap
• Seal to prevent leakage
• Ring of metal fitted between two surfaces to improve grip
• It did be herself that was the next thing to a nut
• Formerly female: next thing to a nut
• It used to be herself that used to be the next best thing to a nut
• There's just a nut beside this in the laundry, perhaps
• This will stop me slipping when 22 down, by the sound of it, perhaps