The Ring Set,piston, cataloged under National Stock Number 4310-00-341-3680, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Dover Resources Inc Dba C. Lee Cook Div. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-341-3680 |
| Primary Part Number | IR-16263 |
| Item Name | Ring Set,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Dover Resources Inc Dba C. Lee Cook Div |
| Status | ACTIVE |
| Ring Set Component Parts | COMPRESSION RING,INGERSOLL RAND CO; 3 |
| Piston Accommodation Quantity | 1 |
| Standard Bore Diameter | 8.000 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| IR-16263 PRIMARY | Dover Resources Inc Dba C. Lee Cook Div (USA) |
| B4783-80 PRIMARY | Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA) |
| 1W115005 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| W115005 | 5/9 Secondary reference U.S. Government activity |
| 1W115005 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| W115005 | 5/9 Secondary reference Ingersoll Rand Co |
| 1W115005 | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-341-3680 is a Ring Set,piston, manufactured by Dover Resources Inc Dba C. Lee Cook Div, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-341-3680 has 3 manufacturer part numbers on file: IR-16263 (Dover Resources Inc Dba C. Lee Cook Div), B4783-80 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies), 1W115005 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
Key specifications for IR-16263: Ring Set Component Parts: COMPRESSION RING,INGERSOLL RAND CO; 3; Piston Accommodation Quantity: 1; Standard Bore Diameter: 8.000 INCHES IN. 3 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.