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4 in. Tight-Fill Top-Seal Fill Caps
4 in. Tight-Fill Top-Seal Fill Caps
4 in. Tight-Fill Top-Seal Fill Caps
4 in. Tight-Fill Top-Seal Fill Caps
One Year Manufacturer Warranty

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OPW 634TT 4 in. Tight-Fill Top-Seal Fill Caps

Duratuff or Die Cast Zinc

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Select Model & Quantity:

Model # Description Price Qty
634TT-7085-EVR 4 in. Duratuff® $53.35
634TT-4000 4 in. Die Cast Zinc $77.17
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OPW - 634TT - 4 in. Tight-Fill Top-Seal Fill Caps
The OPW 634TT is designed to mate with 4" 633T, 633TE, 61SA, 633TC, and 633TCP Top-Seal Adaptors. Heavy duty and corrosion resistant, the body is made of Duratuff® to help eliminate rust and oxidation for a long, maintenance-free life. The toggle lever distributes downward pressure to compress its Buna-N gasket evenly, assuring a positive, water and vapor-tight seal. The 634TT can be locked with a padlock or wire seal. OPW 633TE adaptor is similar to the 633T, except it does not have internal wrenching lugs.
  • Manufactured from Durable, Corrosion-Resistant Materials - Duratuff® with stainless steel pins and Nitrile gasket
  • Prevents Gasoline Vapors from escaping - when not in use and keeps water, dust and debris from entering tank

634TT-7085-EVR

  • Cap and links: Duratuff®
  • Pins: stainless steel
  • Gasket: Nitrile
  • Color: grey

634TT-4000

  • Cap: die cast zinc (powder coated black)
  • Lever: Duratuff®
  • Pins: stainless steel
  • Gasket: Nitrile