The Ring,piston, cataloged under National Stock Number 4310-01-171-4085, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Double Seal Ring Co. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-171-4085 |
| Primary Part Number | DS8015C21P |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Double Seal Ring Co |
| Status | ACTIVE |
| FSC Application Data | LAUNCHER,GUIDED MISSILE,AIRCRAFT LAU-116/A |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.0400 INCHES MINIMUM AND 0.0500 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | CHROMIUM OVERALL |
| Standard Bore Diameter | 0.481 INCHES IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| DS8015C21P | Double Seal Ring Co (USA) |
| Reference | Meaning |
|---|---|
| J8-993P | 3/2 Design control — primary reference U.S. Government activity |
| 3930AS1610-C21P | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| FR84C21P | 5/2 Secondary reference U.S. Government activity |
| ST7M342C21P | 5/9 Secondary reference The Boeing Company Div Defense |
| 10110558 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4310-01-171-4085 is a Ring,piston, manufactured by Double Seal Ring Co, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-171-4085 has 1 manufacturer part number on file: DS8015C21P (Double Seal Ring Co).
Key specifications for DS8015C21P: FSC Application Data: LAUNCHER,GUIDED MISSILE,AIRCRAFT LAU-116/A; Overall Width: 0.0590 INCHES MINIMUM AND 0.0600 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT. 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.