Zoro Select Clean Room Buna-N O-Ring Dash 218 PK25
Pack of 25 clean-room Buna-N O-rings, dash 218, 1.2 in ID, 0.139 in width, 70A durometer, FDA and ISO Class 10 compliant, -40 to 250 °F
- Clean-room certified to ISO Class 10 standards
- FDA-compliant Buna-N material for food-contact safety
- Pack of 25 rings simplifies maintenance stocking
- Medium-hard 70A durometer resists extrusion under pressure
- Withstands -40 °F to 250 °F temperature range
Clean Room Buna-N O-Ring Dash 218
This pack contains 25 white Buna-N O-rings sized to Dash 218 for clean room environments. They meet ISO Class 10 and FDA standards for contamination control. The material is metal detectable but not X-ray detectable. Maintenance teams and equipment assemblers use them where particulate limits are strict.
Capacity and headroom for Dash 218 seals
Each ring has a nominal inside diameter of 1 1/4 in and an actual inside diameter of 1.2 in with a cross section of 1/8 in. The durometer rating is 70A, classed as medium hard. They operate continuously from -40 Degrees to 250 Degrees F. The seal handles moderate pressure and dynamic motion until extrusion or compression set becomes limiting.
Practical limits of the inch standard O-ring
The inch-based Dash 218 groove geometry fixes the seal cross section at 0.139 in actual width and an outside diameter of 1.512 in. Metal detectability aids foreign object checks but X-ray inspection will not reveal the ring. Buyers who need X-ray detectable seals or different temperature extremes must select another material.
How it compares
Measured against everything we stock in Threadlockers & Sealants, at today’s prices. Recalculated every night.
- Price $16.99
- Pricier than about 80% of the 147 comparable items (median $11.99).
Specifications
| Product | |
|---|---|
| Brand name | ZORO SELECT |
Questions about this item
Will the 1.2 in inside diameter and 0.139 in cross-section match the grooves of my current Dash 218 seals?
The nominal inside diameter is 1 1/4 in with an actual inside diameter of 1.2 in and an actual width of 0.139 in, which corresponds to the standard Dash 218 dimensions.
How can I verify these O-rings meet the clean room and FDA requirements after installation?
The white Buna-N material is rated for ISO Class 10 clean room use and complies with FDA standards; the metal-detectable property allows detection equipment to confirm presence in the line.
Does the pack of 25 include any lubricant or installation tools, or must I buy them separately?
The package contains 25 O-rings only; compatible lubricant and any required installation tools are sold separately.
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