The O-Ring, cataloged under National Stock Number 5331-00-166-5990, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Wintec Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-166-5990 |
| Primary Part Number | MS29513-113CP |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Wintec Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Outside Diameter | 0.755 INCHES NOMINAL IN |
| Hardness Rating | 65.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | ZZZW |
| Elongation Percentage | 200 MAXIMUM |
| Departure From Cited Document | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Center Hole Diameter | 0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| MS29513-113CP | Wintec Llc (USA) |
| Reference | Meaning |
|---|---|
| MS29513-113 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 10129560 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| MS29513-113CP | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS29513-113 | 5/9 Secondary reference U.S. Government activity |
| MS29513-113CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MS29513-113 | 5/9 Secondary reference U.S. Government activity |
| MS29513-113 | 3/1 Design control — primary reference Dresser Canada Incwayne Pump Div |
| 5331PL0143689 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| AS29513-113CP | 5/1 Secondary reference Fitzhugh Clifton Dba Hyperox Technologies |
| M29513-113ES | 5/9 Secondary reference Eriks B.v. |
| N90-81611 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-00-166-5990 is a O-Ring, manufactured by Wintec Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-166-5990 has 1 manufacturer part number on file: MS29513-113CP (Wintec Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5331-00-248-3844, 5330-01-560-8677. Verify interchangeability with system specifications before substitution.
Key specifications for MS29513-113CP: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Outside Diameter: 0.755 INCHES NOMINAL IN; Hardness Rating: 65.0 SHORE DUROMETER A NOMINAL; Criticality Code Justification: ZZZW. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.