Zoro Select Buna-N O-Ring Dash 012 PK100
Pack of 100 Buna-N O-rings with a 70A durometer, rectangular cross-section and -40 to 250 °F temperature range
- Metal-detectable Buna-N seals for food-safe processing lines
- Dash 012 rectangular profile fits 3/8 in ID grooves precisely
- 70A durometer resists extrusion up to 250 °F
- FDA-approved material meets direct-contact regulations
- Pack of 100 reduces reorder frequency for maintenance teams
Zoro Select Buna-N O-Ring Dash 012 PK100
This pack contains one hundred black Buna-N O-rings with a Dash 012 size and a 70A durometer rating. They are designed for static sealing in fluid systems where a rectangular cross-section is required. The material handles a temperature range from -40 degrees to 250 degrees Fahrenheit. FDA approval makes them suitable for food-contact applications.
Thermals noise and power draw
As passive sealing components, these O-rings generate no noise and consume no power during operation. Their sealing performance relies on material compression within the specified temperature range. The Buna-N compound maintains elasticity and resistance to compression set across the full -40 to 250 degree Fahrenheit span. No active thermal management is ever needed.
Build quality connectors and mounting
Each ring features a nominal inside diameter of 3/8 inch and an actual inside diameter of 0.3 inch with a 0.07 inch width. The rectangular profile seats in matching grooves to prevent spiral failure. Metal-detectable construction allows identification by inline inspection equipment, though the rings are not X-ray detectable. Bulk packaging supports high-volume maintenance schedules.
How it compares
Measured against everything we stock in Threadlockers & Sealants, at today’s prices. Recalculated every night.
- Price $13.99
- Pricier than about 60% of the 147 comparable items (median $11.99).
Specifications
| Product | |
|---|---|
| Brand name | ZORO SELECT |
Questions about this item
How do I install the rectangular Buna-N O-ring with a .07 in cross-section without twisting it?
Lubricate the ring, seat it evenly in the groove, and press straight in; the rectangular profile resists rolling but must not be stretched over sharp edges during insertion.
When should I replace the 70A durometer Buna-N rings after exposure to 250 Degrees F?
Replace when the material hardens, cracks, or loses elasticity — typically after prolonged cycling at the upper temperature limit or contact with incompatible fluids.
At what point does the .504 in actual outside diameter limit sealing under sustained pressure?
The seal fails first when extrusion into the clearance gap occurs; the .504 in OD and .07 in width set the maximum gap before backup rings are required.
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