Related Clues:

• Packing piece used in seal
• Weatherproofing application
• It's got things covered
• Caulk, for one
• Blow a ___ (lose one's temper)
• Water leak's beginning — worker gets this?
• Deck application
• Something to blow if angry
• Ring sealing a junction
• Builders' material is transported round a US city
• Finish protector
• Proofing agent works, though not initially, under water
• Material blocking leaks
• Area of water left worker needing material for fixing leaks
• Two animals closer?