Meet a dependable sealing solution built for home repairs, maintenance tasks, and everyday fittings: the Danco #66 Rubber O-Ring set. With a precise 1 inch exterior diameter, a 7/8 inch interior diameter, and a slim 1/16 inch wall, these round gaskets compress cleanly to create reliable, leak-free seals in a variety of applications.
-
Size: Exterior diameter 1" • Interior diameter 7/8" • Wall thickness 1/16"
-
Material: Rubber for flexible, resilient sealing across standard household tasks
-
Quantity: 20 O-rings per polybag—readily stocked for multiple repairs
-
Brand compatibility: Fits Harcraft fittings, making it a practical choice for compatible setups
-
Product type: O-Ring, round shape designed for uniform compression
-
ID/Code: #66 for easy cross-reference with replacements and service manuals
These O-rings shine in a range of scenarios—from plumbing connections and appliance hoses to irrigation lines and hardware repairs. If a seal is leaking around a connector, valve, or small pump, this 20-pack gives you the right size on hand to restore integrity quickly without hunting for a single ring.
What makes this set stand out
- Precise sizing that matches common #66 O-ring specifications, reducing guessing during repairs
- Budget-friendly, ready-to-use quantity that minimizes interruptions on DIY projects
- Durable rubber formulation designed for everyday household tasks and moderate-pressure seals
- Compact packaging keeps your toolbox organized and keeps rings separated from other parts
Installation tips for best results
- Inspect the groove or groove seat for nicks or damage before installation. Replace if rough edges could cut the ring.
- Clean both mating surfaces to ensure a smooth, even seal. Lightly lubricate the O-ring with a silicone-based lubricant to ease installation and prolong life.
- Place the ring without twisting, align it evenly in the groove, and tighten fittings to the recommended spec—avoid over-tightening, which can deform the ring.
- When in doubt, replace worn rings as a set to maintain consistent sealing performance across all connection points.
Storage tip: keep the 20-pack in its original polybag in a cool, dry place away from direct sunlight to preserve elasticity and extend usability. Whether you’re updating a farmhouse sink connection, servicing a garden irrigation valve, or refreshing small appliance seals, these O-rings deliver dependable performance when you need it most.
