Skip to content
Free Local Pickup Ship to Your Hometown Store
Pro & Contractor Accounts Apply for Net Terms
100,000+ Products Trusted American Hardware Brands

Danco Tank Bolt Washers Black Rubber

Danco Tank Bolt Washer – Black Rubber is the compact, essential seal you need for tank bolt assemblies. Crafted from flexible black rubber, this washer compresses to form a reliabl…

Danco MPN 9D00080352 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $4.99. Our online price is $5.99.
$5.99
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within for same-day shipping
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Danco Tank Bolt Washer – Black Rubber is the compact, essential seal you need for tank bolt assemblies. Crafted from flexible black rubber, this washer compresses to form a reliable, leak‑resistant seal between the tank hardware and its mounting surface, helping prevent water leaks around bolts during toilet tank installations or repairs.

  • Material: Rubber
  • Color: Black
  • Dimensions: Height 1/8 in; Length 1 in; Width 1/4 in
  • Package Quantity: 1 piece
  • Product Type: Tank Bolt Washer

This washer is designed for tank bolt applications where a tight, dependable seal is needed. It’s especially useful when replacing worn or damaged washers in toilet tanks, helping to prevent slow leaks that can occur around mounting bolts over time. The rubber construction accommodates minor surface irregularities and flexes with temperature and water exposure, maintaining a lasting seal without damaging metal hardware.

Ideal for DIY bathroom repairs, maintenance rounds, and new installations, this Danco washer is a practical, affordable upgrade for anyone tackling a dripping toilet or a shaky tank setup. To install, position the washer around the bolt before securing with the nut, ensuring even compression without overtightening to preserve the seal integrity.

Why choose this Danco piece? It’s a purpose-built, single‑piece rubber solution that pairs with standard tank bolt assemblies, offering consistent performance where metal-to-rubber seals are required. If you’re refreshing your toilet hardware or completing a quick repair, this black rubber tank bolt washer delivers a dependable, ready-to-use seal that helps keep your bathroom leak-free.

The Details Specifications

Brand Danco
SKU 4337291
UPC 037155803521
Unit EA
Case Pack Quantity 3 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 4 × 3 × 1
Weight 0 lbs
Cubic Feet 0.00583 ft³
Country of Origin CHINA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare