Zoro Select Buna-N O-Ring Dash 246 PK10
Pack of ten Buna-N O-rings with dash number 246, 4.4 in inside diameter and 0.139 in cross-section, rated for -40 to 250 °F
- FDA-compliant Buna-N material resists oils and fuels
- Metal-detectable design aids contamination control in food lines
- Withstands -40 °F to 250 °F for wide thermal range
- Pack of 10 O-rings covers multiple seal points
- Dash 246 size fits 4.4 in ID grooves
O-Ring Dash 246 Ten Pack
The Zoro Select Buna-N O-Ring Dash 246 comes in a pack of ten for sealing tasks that require a 4.4 inch inside diameter and 0.139 inch cross-section. Maintenance teams and repair shops use these black rings where a medium-hard 50A durometer material is specified.
Capacity And Temperature Headroom
The rings operate from minus 40 degrees up to 250 degrees Fahrenheit and meet FDA compliance for incidental food contact. They are metal detectable but not X-ray detectable, so they suit lines with magnetic inspection only. The nominal outside diameter is 4.762 inches.
Thermals Noise And Power In Normal Use
As static seals the rings draw no power and produce no noise during service. The Buna-N material resists compression set within the stated temperature window, maintaining seal integrity without active cooling or lubrication. Performance degrades outside the rated thermal range.
How it compares
Measured against everything we stock in Threadlockers & Sealants, at today’s prices. Recalculated every night.
- Price $9.99
- Cheaper than about 70% of the 147 comparable items (median $11.99).
Specifications
| Product | |
|---|---|
| Brand name | ZORO SELECT |
Questions about this item
Will the 4.4 in inside diameter O-rings seal properly on my existing 4 1/2 in nominal groove?
Yes, the actual 4.4 in inside diameter and 0.139 in width match the Dash 246 standard for a 4 1/2 in nominal groove, so they fit the same hardware you already use.
How can I confirm the 50A durometer Buna-N material is performing correctly after installation?
Check that the rings seat evenly without twisting, hold pressure across the -40 to 250 °F range, and show no extrusion or cracking during the first thermal cycles.
Does the PK10 pack include any lubricant or installation tools, or must I buy them separately?
The pack contains ten black Buna-N O-rings only; compatible lubricant and any sizing or installation tools are sold separately.
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