The locking plug for monitoring wells seals against the inside wall of the well casing to provide a watertight, tamper-proof seal.

• Features
• no metal parts
• Accepts #1 or #3 type pad locks or Koby Safety Lock-Out Tags.
• High-tech liquid tight seamless dual rubber gasket.
• Easily disassembled in the field for deconstruction.
• Strong instrument tethering tool. Dual use with anvil tip.
• Manufactured from an engineering grade polymer blend commonly used to replace steel gears in industry, resistant to most chemicals, unaffected by freezing or high temperatures. Smooth acting ergo grip.
• Easy on, easy off wing nut.