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O-Ring — O-Rings (FSC 5331) · Part No. AS568-238
| National Stock Number | 5331-00-172-7223 |
|---|---|
| Item name | O-Ring |
| Part number (commercial reference) | AS568-238 |
| Alternate references | ASTM D 2000; N0674-2-238; AS568-238; MIL-STD-413; S9233-DS-MMC-010 FIG 7-50 IT #62; 2-238N674-70; 938284631U01 |
| Unit of issue | EA |
| NIIN | 001727223 |
| NIIN assigned by | United States (NCB code 00) |
| Federal Supply Class (FSC) | 5331 — O-Rings |
| Federal Supply Group (FSG) | 53 — Hardware and Abrasives |
| Unit price (USD) | $0.70 |
| Country of origin | Türkiye (Turkey) |
| Lead time | Within 90 days of order |
| Minimum order | May apply — confirm on quote |
| Documentation | Source documentation provided on all orders |
Characteristics decoded from the federal cataloging record for this o-ring. Confirm controlling dimensions against your drawing or standard sheet before ordering.
| Cross-Sectional Height | 0.135 Inches Minimum And 0.143 Inches Maximum |
|---|---|
| Hardness Rating | 70.0 Shore Durometer A Nominal |
| Material | Rubber Butadiene-Acrylonitrile Class Nbr |
| Outside Diameter | 3.730 Inches Minimum And 3.794 Inches Maximum |
Precision elastomeric sealing rings of circular cross-section used for static and dynamic sealing in grooves and glands.
Price in context. Across the 692 items we currently stock in FSC 5331 (O-Rings), published unit prices run from $0.14 to $3,504.60. At $0.70, this item sits well below the class median of $5.25 — commodity hardware usually bought in volume.
Stock activity. This item has appeared once in our supplier stock feed, most recently listed 2026-07-17, with a lot quantity of 1,730 units. Listing activity is a practical signal of ongoing availability; confirm current stock and firm pricing on your quote.
Typical applications. Hydraulic and pneumatic cylinders, fittings, valves, and fluid-power components across all platforms.
Applicable standards. AS568 dash sizes, MIL-P-5510 / SAE AS5857; nitrile, fluorocarbon (Viton), EPDM, and silicone compounds.
NSN 5331-00-172-7223 is supplied by Quick Brown Fox Solutions as a stock resale item. For custom-manufactured or prototype parts to your print, see our U.S.-based CNC machining services.
Country of origin: Türkiye (Turkey) — a DFARS qualifying country. Türkiye is a NATO ally with a reciprocal defense procurement agreement with the U.S. Department of Defense, making it a qualifying country under DFARS 225.003. On DoD and DLA solicitations, qualifying-country end products are evaluated without Buy American price penalties — they compete on par with domestic product — and DoD trade-agreements clauses (DFARS 252.225-7021) expressly accept qualifying-country end products.
Dollar thresholds. The Trade Agreements Act only applies to supply contracts at or above $174,000 (the WTO GPA threshold effective March 2026); below that — where the vast majority of hardware buys fall — the TAA does not apply at all. The main exclusion is civilian-agency solicitations at or above that threshold that restrict award to TAA designated-country products (Türkiye is not TAA-designated). Buyers are responsible for confirming the origin requirements of their specific solicitation.
Full country-of-origin and source documentation is provided with every order. Fulfillment within 90 days of order. Minimum order may apply.
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