Related Clues:

• Cleaner used to be a woman
• Plumber often wants it cleaner
• Nut and bolt spacer
• She's engaged in battle to keep things firm
• Ring under nut
• Perhaps laundryman has had a sex change?
• Spacer for nut and bolt
• Saw her turmoil in launderette
• Dryer go-with
• Metal disc
• A female in the fighting ring
• Plumber's rubber ring
• Seal preventing leakage
• Flat ring
• Plumbing seal