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O-Ring — O-Rings (FSC 5331) · Part No. AS568-172
| National Stock Number | 5331-01-023-7632 |
|---|---|
| Item name | O-Ring |
| Part number (commercial reference) | AS568-172 |
| Alternate references | AS568-172MIL-P-25732; 01-435-0296-5 PIECE 98; 2-172N304-75; 2-172-BUNA-N; ARP568-172MILP2 5732; MILP2-5732-AS568-172-AS568-172MIL-25732 |
| Unit of issue | EA |
| NIIN | 010237632 |
| NIIN assigned by | United States (NCB code 01) |
| Federal Supply Class (FSC) | 5331 — O-Rings |
| Federal Supply Group (FSG) | 53 — Hardware and Abrasives |
| Unit price (USD) | $70.09 |
| 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 | 0.100 Inches Minimum And 0.106 Inches Maximum |
|---|---|
| Hardness Rating | 75.0 Shore Durometer A Nominal |
| Material | Rubber Butadiene-Acrylonitrile Class Nbr |
| Outside Diameter | 8.387 Inches Minimum And 8.499 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 $70.09, this item sits well above the class median of $5.25 — typical of assemblies and higher-value line items in this class.
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 5331-01-023-7632 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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