The Ring,wiper, cataloged under National Stock Number 5330-00-640-8561, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-640-8561 |
| Item Name | Ring,wiper |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| FSC Application Data | HYDRAULIC SYSTEM,ACFT |
| Outer Edge Thickness | 0.141 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | OUTSIDE GROOVED, STRAIGHT FACE |
| Outside Diameter | 6.719 INCHES NOMINAL IN |
| Joint Style | DIAGONAL JOINT |
| Material Thickness | 0.172 INCHES NOMINAL IN |
| Inside Diameter | 6.250 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Test Data Document | 81349-MIL-S-5049 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| SRC-54 | 5/1 Secondary reference Scrapper Rings Co Div of Roberts Tool Co |
| AN6231-A54 | 5/9 Secondary reference U.S. Government activity |
| MIL-S-5049 | 5/9 Secondary reference U.S. Government activity |
| MS28776M2-54 | 2/2 Government specification standardization U.S. Government activity |
| MIL-R-5049 | 4/1 Identification reference U.S. Government activity |
| FWR-3C-54 | 5/9 Secondary reference U.S. Government activity |
| GI 1171-54 | 5/1 Secondary reference U.S. Government activity |
| OAS-54 | 5/9 Secondary reference Greene Tweed and Co Advantec Div |
| G-54 | 5/9 Secondary reference Gayle George W and Son |
| AN6231-54 | 5/9 Secondary reference U.S. Government activity |
| ISR-54 | 5/9 Secondary reference U.S. Government activity |
| DRI-54 | 5/9 Secondary reference Delta Mfg and Sales Inc |
NSN 5330-00-640-8561 is a Ring,wiper, classified under FSC 5330, Packing and Gasket Materials. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 4930-00-796-8708, 5310-01-191-0292, 5315-01-693-0641. Verify interchangeability with system specifications before substitution.
Key specifications for 5330-00-640-8561: FSC Application Data: HYDRAULIC SYSTEM,ACFT; Outer Edge Thickness: 0.141 INCHES NOMINAL IN; Cross-Sectional Shape Style: OUTSIDE GROOVED, STRAIGHT FACE; Outside Diameter: 6.719 INCHES NOMINAL IN. 9 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.